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Oreqn Sa:3 Univerj
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$73
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1974
L 9 74
o*
COASTAL
RIVERS
COASTAL
RIVERSINVESTIGATION
INVESTIGATION
INFORMATION
REPORT
74-7
REPORT
74.7
II,IFOR}IATION
a
o
.
. l
TAGGING
OP
BASSIN
IN THE
TAGGING
STRIPEDBASS
OF STRIPE!)
UMPQ(JA
RIVER, 1971-73
RIl"rER,
IXIIPQUA
l97l-73
o
il
by
l'{ull.en
Robert E. Mullen
{n
o
Fish Corrnission
of 0regon
Oregon
Connission of
I\lanagenent and
Ilanagernent
and Research
Research Division
Division
o
c.f,
=
a
o
o
q
October
October 1974
1974
o
{a
ri
*
W#.ffi'ff
P
orcr,
ORTCCFJ
o
CONTENTS
CONTENTS
c
Page No.
o
0
o
INTRODUCTION
II.NRODUCTION..
1
THE
FISHERY
.............................................
THECOMMERCIAL
COI'IMERCIAI
FISHERY.
1
THE
FISHERY
..................................................
THESPORT
SPORT
FISHERY.
3
.. . . .. . .
CAPTURE AND
PROCEDURES
.....................................
ANDTAGGING
TAGGII'IG
CAPTURE
PROCEDURES.
...
3
TECHNIQUES
FOR
TAGGED
FISH
..............................
TECFNIQUES
FORRECOVERING
TAGGED
FISH.
RECOVERING
S
. .. . .
SUMMARY
OF
AND
FISH
..............................
TAGGED
FISH.
. .. i e
Sut'4}.{ARY
0F TAGGED
ANDRECAPTURED
RECAPTURED
6
1 G 971
?1
.t....r...'4"'
..t...a...
1
..........................................................
LJILT
.....
(sjrrine)
.
......................................
1972
(Spring)
@
(Sqnner)..................................................
.. , ..
19721972
(Summer)
I c l 7 ? ..........................................................
1973
6
10
10
VALIDITY OF
ESTIMATES
.....................................
PETERSEN
.
VAI,IDITY
OF PETERSEN
ESTII'ATES..
11
11
.........
RECRUITED
PD
O P U L A T IESTIMATES
E
OS
NT I } . 1 I { .....................................
TES...
R E C R U I T POPULATION
E
21t
2
. .. ..
MIGRATION PATTERNS
..................................................
I..{IGMTION
PMTERNS
233
2
ACKI{OI'JLEDGT.ENTS.
.....
ACKNOWLEDGMENTS ....................................................
233
2
LITERATURE
CITED
...................................................
LITERATURE
CITED.
25
25
L J
o
a
o
o
o
S
o
o
'
J .
7
7
o
TABLES
TABLES
Table No.
No.
Table
1
2
PaAeNo.
No.
Page
Location and
and Number
Nunber of
of Fish
Fish Tagged
Taggedin
Location
in Smith
Smitir and
and
U
m
p
q
u
a
R i v e r s , 1971
1 9 7 1.....................................
.
Umpqua Rivers,
.....
.......,........
6
6
Tag Recoveries
Recoveries of
Bass Tagged
Tag
of Striped
Striped Bass
Tagged in
the Smith
in the
a
n d Umpqua
U m p q uRivers,
a i v e r s , 1971
R
1 9 7 1..................
.
and
i r . . . . . . ...
. . . ............
.
...... r r
6
6
Location and
and Number
Fish Tagged
in the
Location
Number of
of Fish
Tagged in
the Srnith
Smith and
and
U
m p q uRivers,
a i v e r s , March-May,
R
l 4 a r c h - l { a y1972
L, 9 7 2..........................
,...... ....
Umpqua
.....
7
7
Tag Recoveries
Recoveries of
Striped Bass
of Striped
Bass Tagged
Tag
Tagged in
in the Smith
Smith
a
n d Umpqua
U n p q u aRivers,
R j . v e r s ,March-May,
l , ! a r c h - l 4 a 1972
y1, 9 7 2......................
.
and
......
I
8
Location and
llumber of
and Number
of Striped
Striped Bass
Bass Tagged
Taggedin
Location
in the
the
Snith
and
Umpqua
Rivers, June-September,
Jtnre-september,1972
Smith and Umpqua Rivers,
1972.
...........
10
10
.
o
3
4
o
S
6
o
7
8
,o
9
t
Tag Recoveries
Recoveries of
of Striped
Striped Bass
Bass Tagged
Tagged in
Tag
in the Smith
$nritii
n e - S e p t e n b e r ,1972.....
a n d Urrrpqua
Uinpqua
RRivers,
i v e r s , j uJune-September,
and
l g 7 2 , r r e r r ...........
l0
10
tocation
and Nurnber
Location and
Number of
of Fish
Fish Tagged
Tagged in
in the
the Snith
Smith and
and
Unpqtra
Rivers, 1973
1973,
Unpqua Rivers,
......................................
ll
11
Tag Recoveries
Recoveries of
of Striped
Striped Bass
Bass Tagged
Tag
Tagged in
in the Smith
Snith
and
UnpquaRivers,
1973.
and tJmpqua
Rivers, 1973
.................................
lz
12
Striped Bass
Bass Landings,
Landings, Tag
Tag Returns,
Returns, and
Striped
and Computation
Conputation
of Chi-Square
Chi-Square Values
Values Comparing
Cornparingthe Rates
of
of Tag
Tag
Rates of
Returns of
of the
the Two
Two Major
irtajor Commercial
Returns
Comnercial Buying
Buying Stations
Stations on
on
the Umpqua
&npquaRiver,
River, 1972
L972 and
the
and 1973
L973.
.........................
Z0
20
FIGURES
FIGURES
Figure No.
No.
tigure
1
1
o
2
2
3
4
o
o
.
F
PgqeNo.
No..
Page
Map of
of Smith
Snith and
and Umpqua
UmpquaRivers
Map
Rivers Showing
Shoviing Tagging
Tagging and
and
Recovery
Sites Referred
Referred to
to inin the
Recovery Sites
...................
theToxt
Text.
2
2
t_ength Frequency
Frequency of
of Striped
Striped Bass
Bass Tagged
Length
Tagged and
and Sampled
Sarnpled
from
the Commercial
Connercial Catch, Umpqua
Unpquaand
from the
and Smith
$nith Rivers,
RivLrs,
L
9 7 2....................................................
.
1972
L7
17
Length Frequency
Frequency of
of Striped
Striped Bass
Bass Tagged
Length
Tagged and
and Sampled
Sampled
from
Cat,ch, Umpqua
Unpquaand
from the
the Comrnercial
Commercial Catch,
and Smith
Srnith Rivers,
Rivers,
1
9 7 3....................................................
.
1973
1B
18
Length Frequency
Frequency of
of Striped
Striped Bass
Length
Bass from
from the
the Sport
Sport
Catch,
Umpquaand
Catch, Urnpqua
and Smith
Smith Rivers,
Rivers, 1972
Igjz ...................
24
24
a
Tagging
Tagging of
of Striped
Striped Bass
Bass in
in the
UnpquaRiver,
River, 1971-73
l97l-73
Umpqua
INTRODUCTION
INTRODUCTION
(tulovonesanati,Lisl
Striped
Striped bass
bass (Morone
sa.ratiUs) were tagged on the
the Umpqua
Umpqua and
and Smith
(Figure 1)
rivers (Figure
1) to
rivers
to estimate
estimate the
the numbers
numbers of
of bass recruited
recruited to
to the
the cornmerconmier-
o
fishery and
gather information
cial fishery
and to
to gather
information on migration
cial
migration habits
habits of
of bass in
in
these rivers.
rivers.
these
Snall
Small numbers
numbers of
of striped
striped bass were
were tagged
tagged in
in the
the surrners
summers
of
1971 and
and 1972,
1972, but
but most
most were
were tagged
tagged in
of 1971
1973.
in the
the springs
springs of
Lg72and
of 1972
and,1923.
o
Tagged
striped bass
were recaptured
recaptured by
by the
the commercial
comnercial and
Tagged striped
bass were
and sport
sport fisheries.
fisheries.
l'Ihite
trqnsmontutus) and green
Vhite stu"geon
sturgeon (AaLpenser
Acipenser transmontoius)
green sturgeon
sturgeon @.
M.
medirostrLsJ
captured incidental
incidental to
to striped
bass were
striped bass
were also
medirostris) captured
tagged.
also tagged.
o
THE;ColrlliEIlCIAt
THE
CONflERCIAL FISHERY
FISHERY
The first
first recorded
recorded commercial
commercial landings
landings of
of striped
striped bass
bass from
frorn the
The
the Smith
Smith
OO
and
rivers were
were in
1934when
in 1934
wlren62
lLrs were
and Untpqua
Umpqua rivers
were landed'incidental
landed incidental to
62 -lbs
to
(Alosasctpidissirna)
the intensive
intensive American
Anerican shad
shad(Alosa
the
sapidissiraal fishery.
fishery.
The
The striped
striped
bass
landings increased
increased since
since 1934
1934to
peak of
bass landings
to aa peak
of 56,321
s6,321 lbs
lbs in
in 1971.
1971.
o
striped
landings were low,
low, rarely
Striped bass
bass landings
rarely exceeding
exceeding 10,000
prior to
10,000 lbs/year
lbs/year prior
to
the 1960's.
the
1960rs.
Since
1960, the
the combined
combined annual landings
landings for
Since 1960,
the Sinith
Smith and
and
for the
Umpqua
Urn qua rivers
rivers averaged
averaged 24,8A0
24,800 lbs/year
lbs/year (Mullen,
(t{ullen, 1973).
lgZS).
c
The Umpqua
UnpquaRiver
River commercial
commercial fishery
The
fishery was
was limited
gill nets (drift
(drift
limited to
to gill
nets).
nets).
Both
Both gill
gill nets
nets and
and set
set nets
nets were
were legal
legal bn
On the
the smith
Smith River,
River, but
but
for
reasorrs, only
for practical
practical reasons,
only set
set nets were
were fished.
fished.
o
The upstream
The
upstrean commercial
commerciaL
fishery
fishery deadline
deadline was
was at
at the
the confluence
confluence of
of the
the North
North Fork
Fork on
on the
the Smith
Srnith River
River
and
at the
the confluence
confluence of
t"1i11Creek
of Mill
and at
Creekon
onthe
UnpquaRiver.
the Urnpqua
River.
There was
There
u'as no
regulatory downstream
downstreamclosure
closure although nost
regulatory
most commercial
conmercial fishing
was conducted
fishing was
conducted
o
o
o
I.
upstrean from
from Reedsport
and probably
upstream
Reedsport and
probably none
none n'as
was downstream
downstream frorn
from the
the Big
Big Bend
Bend
( F i g u r e 1).
(Figure
L).
Scottsburg
b0
Fl
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.
T,
{-r
1--''
l{
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Creek
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Map of Sid.th and Umpqua Rivers Showing Tagging and Recovery Sites
s
i)
?A
{t)
.$J
.Fl
miles
..
?l
F
Creek %
Slough
o
Figure 1.
North Fork
t{
rS
o
ofrrec1 to in the Text
\\
***__*
t{
bo
.rl
f&
o
3.
3.
Connercially'caught
striped llass
Commercia1ly
caught striped
bass were
were landed from t{ay
May 11
11 through
JuLy 1.
L,
July
No size
size or
or bag
bag limit
linrit existed
existed on
No
on commercially
comnerciall.ylanded
landedbass.
bass.
Net
Net
mesh
size restrictions
restrictions were
mesh size
were rtot
not less
6" nor
nor more
less than 6't
nore than
than 6-3/4"
6-3/4rr for
for both
rivers.
rivers.
o
THE SPORT
SPORTFISHERY
THE
FISHERY
The sport
sport fishery
fishery on
on the
the Smith and
The
and Umpqua
Urnpquarivers
rivers caught an
an estimated
estinated
6,036 striped
striped bass
expending an
in 1972,
Ig72, expending
estimated 31,507
6,036
bass in
days during
an estimated
il,507 angler
angLer days
o
the period
February 21
2I through
through October
(Aney, 1973).
October 31
the
period Pebruary
31 (Aney,
1.973). This represented
represerrted
a sizeable
sizeable increase
increase in
in sport
sport fishing
fishing pressure
a
pressure and
success since
since 194F
when it
it
and success
lg46 when
was estimated
estimated that
that no
no more
more than
than 50
50 fish
fish were
were caught
(Fish
was
caught by 25
ZS anglers (Fish
o
Conm.of
of Oregon,
Oregon,1946).
Comm.
1946).
There
There was
was no closed season
or fishing
season or
fishinfr area
area for
for striped
bass taken
striped bass
taken on
on
gear.
sport
sport gear.
CO
The bag
bag limit
limit was
urasfive
five fish
fish per day,
The
day, 16"
l6'f and
and over in
length.
in length.
No
significant amount
anount of
No significant
of sport
sport fishing
fishing effort
effort was
t{a.sexpended
expendedupstream
upstrean from
from
the town
tovnr of
of Scottsburg
Scottsburg or
or downstream
downstreamfrom
the
(Fi.gure1).
fron Double
Double Cove
CovePoint
Point (Figure
1).
o
CAPTURE
ANDTI.GGING
CAPTURE AND
TAGGING PROCEDURES
PROCEDURES
A11 bass
bass tagged
tagged prior
prior to
to the opening
All
opening of
of the commercial
commercial fishery,
fishery, and
and
used to
to estimate
estimate the
used
the number
nunber of
of recruited
recruited fish,
fish, were
lrrerecaptured
captured using
using aa 6"
6tt
o
(15.2
(15.2 crn)
cm) stretch
stretch mesh,
mesh, 42-rnesh
42-mesh deep, no.
no. 33
(First !ashington
33 (First
tfashington Net
Net Factory,
Factory,
Inc.)
lay gill
gill net,
Inc.) cable lay
net, hung
hung on
on a one-half
one-hal.f basis.
basis.
The
The net was
was 100
100 fathoms
fathoms
(182.9 n)
(182.9
m) long
long althougl'r
although the
the entire
entire net
net was
lras not always
always fished.
fished.
o
captured in
in 1971
1971 were
were caught
captured
by hook
caugirt by
hook and
and line.
line.
A few
A
few bass
bass
During the summer
sumnerof
During
of 1972
lgTZ
b
ass w
e r e captured
captured w
(9s.1 m
i t h a l125'
2 5 t (38.1
bass
were
with
m),
mesh
( 1 . 3 cm)
) , 11/2"
/ 2 ' , (1.3
a g seine.
cm) m
e s hbbag
sej.ne.
Most bass
bass were
were tagged
Most
tagged at
night.
at night.
o
o
U
A few
ferv were
were taggecl
tagged in
afternoon
in late
late afternoon
when water
water and
and tide
tide conditions
when
conditions were
lrere suitable.
suitable.
l.{ost tagging trips
trips spanned
Most
sparmed
2 calendar
2
calendar days
days with
with the
the date of
of the
the lst
1st day used
used as
as the reference
reference date.
date.
o
4.
4.
Thus, fish
fish tagged
Thus,
evening of
tagged on
on the
the evening
of April
L7 and
md the morning
April 17
of April
morning of
April 18
18
lvere both
both recorded
were
recorded as
April 17.
17.
as April
?agging
location varied.
Tagging location
varied.
Fishing
Fishing was
was cohtinued
continued at
at a given location
location
the catch
until the
catch rate
until
to an
fish were
were
rate dropped
dropped to
ltost fish
an unacceptable
uilacceptable level.
1eveL. Tiost
o
tagged
physical boundaries
bornrdaries of
tagged within
within the physical
ommércial fishery
of the
the iomnerci.al
fishery although a
tagged approximately 0.5
few were
were tagged
krnup
fron Mill
0.5 km
up river
river from
Mill. Creek.
Creek.
Fishing
Fishing techniques varied
varied with
with the
the net
net sometines
sometimes anchored
anchored or
or tied
tied to
to
o
shore
and at
at other times
times allowed
shore and
allowed to
free with
to drift
drift free
with the
the tide.
tide.
Fishing was
Fishing
was
usually
restricted to
usually restricted
to an
an hour
hour or
or two
tr+o before
before and
and after
slack tidal
tidal Current,
after slack
current,
but
this varied
varied greatly
greatly with
r^rith tidal
but this
tidal height
height and
and river
florv.
river flow.
o
No
No attempt
was
attenpt was
nade
to standardize
standardize the number
made to
numberof
of hours
fished or
hours fished
or the
the length
length of
of drifts.
drifts.
0nce captured,
captured, fish
fish were
were removed
gil.l. net
quickly and
Once
removed from the gill
net as quickly
and
.
oo
gently as
possible.
gently
as possible.
Eacir fish
fish was
(fork
Each
nearest centimeter
hras measured
neasured to
to the nearest
centirleter (fork
length) and
and sex
pressure on
length)
sex determined,
when possible,
deternined, when
possible, by
by exerting
exerting pressure
the
on the
fishrs abdomen
abcionen
qametes. Very
forcing the
fishs
and
andforcing
the discharge
discharge of
Very few
fema!.ebass
bass
of gametes.
few female
were
identified using
were identified
using this
tiris technique.
technique.
o
Bass
yslloto vinyl
Bass r^rere
were tagged
with bright
tagged rvith
bright orange
orange or
or yellow
vinyl
placed
belorv the
the insertion
insertion of
placed below
of the
the second
seconddorsal
dorsal fin.
fin.
'rspag;hettifr
"spaghetti" tags
Each
was secured
Each tag was
secured
with
stainless steel
with a nunrbered
numbered stainless
steel clamp
clarip and
tied with
rvith aa single
lcnot.
and tied
single loop
loop knot.
o
A11 tags
tags were
were numbered
All
nurnberedand
and stamped
stampedwith
with aa return
return address.
address.
were
ltlo
No rewards
rewards were
offered
offered for
for returning
lags.
returning tags.
Once
tagged, fish
fish were
were held
held by
by hand
Once tagged,
hand over
over the
the side
side of
of the
the boat.
boat.
o
were
were not
not released until
they could
until they
coulcl swim
swimfreely.
freely.
Fish
Fish that
Fish
were badly
badly
that were
injured were
were either
injured
either released
released untagged
tmtaggedor
or destroyed.
destroyed.
In 1973
1973 all
given a left
all bass
In
bass were
were given
ventral fin
addition to
to
left ventral
in addition
fin clip
clip in
o
O
o
spaghetti tag.
the spaghetti
tag.
o
5.
5'
Green and
and white
tagged rvith
Green
white sturgeon were
were tagged
with nunbered
numbered Petersen
disc tags
Petersen disc
tags
inserted
inserted through the caudal
caudal peduncle.
The
totat length
length of
The total
of each
each tagged
tagged
sturgeon was
was recorded.
sturgeon
recorded.
o
TECHNIQUTS
FoRflECOVERING
PIEC0VERIN6
TECHNIQUES
FOR
TAGGED
TAGGED FISH
FISH
Prior to
to the
the 1972
1972 commercial
comrnerclalfishing
Prior
fishing season,
season, a letter
letter was
was sent
tr: all
sent to
all
licensed commercial
conrnercial fishermen
fishernen on
onthe
licensed
and
the Umpqua
Urnpqua
Sr{ith rivers.
andSriith
rivers.
o
Fisherrnen
Fishermen
were requested
tequested tc
tc leave
leave the
the tags in
in bass
bass they caught
were
caught and
and to
to leave
leave the
tagged
fish with
urnat'keclfish
fish they
they sold
tagged fish
with unmarked
sold to
to either
either of
of the
tr+obuying
the two
buying stations
stations
located
located at Reedsport.
Reedspo"t. The
Letter also explained
The letter
e.rpl.ainedthe
the purpose
of the tagging
purpose of
progran.
program.
o
Fish Commission
Comnissionpersonnel
personnel regularly
reaularly visited
visited both buying
Fish
buying stations
stations
throughout
season; at
the season;
at least
Least twice
twice aa week
week in
throughout the
in 1972
rgTz and
and 5s days
days a week
week
oo
in
1975. Workers
in 1973.
lforkers at
at buying
stations ruere
alerted and
and asked
buying stations
were alerted
watch for
asked to
to lvatch
for
and return
and
return tags.
tags.
In 1973,
In
1973, Fish Commission
ernployeeS examined
Commissionemp1oyee
exanined striped
striped
bass
at the
the buying
buying stations,
bass at
stations, counting
counting fin-clipped
fin-cLipped fish.
fish.
o
Signs
Signs htere
were posted
posted at
at boat ramps
ramps and
marinas to
and narinas
to alert
alert sport
sport fishermen.
fisherrnen.
These signs
signs showed
showedaa picture
picture of
These
of a tagged
bass, briefly
tagged bass,
briefly outlined
outlined the
the reasons
reasons
for the
the tagging
tagging progran,
for
program, and
and asked
returned to
askecl that
that tags be returned
to the Fish
Fish
o
Connission.
Commission.
A
was listed
a-dd.resswas
listed on
A return
return address
on the
the sign
sign as
as well
well as aa note that
that
a
a letter
letter telling
telling each
each angler
angler wheir
when and
and where
where their
their fish
fish l'las tagged
worrld
tagged would
be returned
returned to
to each
each person
person who
be
who mailed in
in aa tag.
teg.
o
A
reLease was
A news
news release
was carried
carried by local
tr.ocal.radio,
radio, television,
tel.evision, and
newspapers
and newspapers
.lescribing
and asking
ashi:rg anglers
describing our
our progran
program and
anglers to
to watch
for tagged
watch for
tagged fish.
fish.
One
one
ileltrspaPerran
periodic summaries
ran periodic
sunmaries of
of how
how many
newspaper
nany striped
bass had
striped bass
had been
been tagged
tagged
o
o
a
and returned to
and
to date.
date.
The Oregon
0regon State
State Wildlife
ltildlife
The
Commission
Cornmissionconducted
conductecl creel
creel censuses
censuses in
in both
'the sport
1972 and
and 1973
1973 and
and collected
collected tags
1972
tags when
when encountered
encormteTedin
in the
srrort catch.
catch.
[.
6.
6.
SI,I\T,IARY
OFTAGGED
SUNHARY
OF
I?ND
RECAPTURED FISH
TAGGED
A$IDRECAPTURED
FISH
t971.
1971
Fourteen striped
Fourteen
striped bass
tagged on 6 nights
bass were
were tagged
nights in
July and
in July
and August
of
August of
1971.
1971.
o
Two
sturgeon and
green sturgeon were
and six
six green
Two whlte
white sturgeon
were also
also tagged.
tagged.
,sturgeon hole."
sturgeon were
were all
sturgeon
tagged at
all tagged
at the "sturgeon
hole."
Ttre
The
The bass
bass were
The
were tagged
tagged at
at
three location5
(Table 1).
three
locatioM (Table
f).
Table 1.
Table
1.
Location and
and Number
Nurnberof
Location
of Fish
Fish Tagged
Taggedin
smith and
in Smith
urEqua
and Umpqua
R i v e r s , 11971
97f
Rivers,
o
.
o
Nunber
Number
-
Locarlon
Location
Striped Bass
Bass
Striped
Gardiner Channel
Channel
Gardiner
Lower Clark's
Lower
Clarkts
Butler Creek
Creek
Butler
Sturgeon
Sturgeon Hole
Sturgeon
Sturgeon
3
3
0
0
0
0
0
0
2
2
Total
Total
9
9
0
0
g
14
14
I
8
Four striped
striped bass
bass tags
were returned
tags were
Four
by sport
returned by
sport fishermen;
fisherrneni one
one in
in 1971,
1971,
two in
1972, and
in 1972,
two
and one
in 1973.
one in
One striped
1973. One
striped bass
bass was
was recaptured
recaptured and
and released
released
o
by
the tagging
tagging crew
(Table 2).
by the
crew in
in 1973
1973 (Table
2).
None
None of
were
of the tagged
tagged sturgeon were
recaptured.
recaptured.
Table 2.
Table
2.
Tag Recoveries
Recoveries of
of Striped
Tag
striped Bass
Bass Tagged
in the
Tagged in
the Smith
smith and
and
Uupqua
Umpqua Rivers,
Rivers, 1971
1971
o
Tag
No.
No..
o
a
o
.
Date
Date
Days
Days
teneth
tength
sex
Length Sex
Sex Tagged
T?gged Rec.overed
Ta
Recovered at
at Large
Large
2723
2723
2736
2736
2737
2737
47
47
57
57
58
58
----
8/25/71
8/25/71
8/26/71
8/26/71
8/26/71
8/26/71
5/A9/73
5/09/73
7/27/72
7/27/72
4lA7/.73
4/07/73
336
336
590
590
2738
2738
2741
2741
66
66
62
62
---
Bl30/71
8/30/71
8/31/71
8/31/71
9/26/71
9/26/71
7/07/72
7/07/72
311
311
2/ SymboZs:
Synbols:
A
623
623
27
27
Area Tagged
Area
Taggqd
Tagged
Type
Type
'.
Recovered
Area Rg
Recovered '1/
Z1_
tower Clark.ts
Lower
Clarks Providence
Providence Creek
Creek
Butler Creek
Butler
Creek Smith
Smith River
River Brid
Bridp
Butler
But1er Creek
Creek Smith
Snith River
River at
at
North Fork
Fork
Butler
Butler Creek
creek
Butter Creek
Butler
creek
Butler Creek
Butler
creek
Smith
smith River
g = Sport.
I? = Recapture
R
Reeqture by
bg tagging
tagging crew.,
e?at), S
Sport.
R
R
S
S
S
S
sS
s
S
o
7.
7.
(Spring)
1972 (Spring)
1972
g, 1972,
BetweenMarch
l,tarch 99 and
blay9,
and May
Between
lg7l, 435
435 striped
striped bass
bass were
were captured
captured and
and
neasured, 430
430 of
measured,
of which
which were
were tagged
tagged and
released.
and released.
One white
white sturgeon
sturgeon and
One
and
three green
green sturgeon
three
sturgeon were
also tagged
(Table 3).
tagged (Table
were also
3).
Table
Table 3.
3.
o
Location and
and Number
lrlunberof
of Fish
Fish Tagged
Location
Taggedin
the Smith
in the
Smith and
and
UrirpquaRivers,
Rivers, March-May,
!4atch-t4ay, 1972
Umpqua
lgTZ
Location
Location
o
o
Lower
Clarkts
Lower Clark's
Otter
Slough
Otter Slough
Noel.t s Ranch
Ranch
Noel's
l4acey Sands
Sands
Macey
Spruce Drift
Drift
Spruce
I-linsdale's
Hinsdale's
Brandy
Brandy Bar
l"fil.1 Creek
Mill
Creek
Total
Total
Number
Striped Bass
Sturpeon
Sturgeon
5
5
6
699
6
6
0
0
0
0
0
0
t2t
121
ti5
115
84
84
2
2
I
I
0
0
1
1
I1
g.
0
?9
29
430
430
4
4
In 1972,
1972, iS
In
18 tags were
were returned
returnecl by
by commercial
comnercial fishermen
fisherrnen and
and 40
40 tags
tals
o
were returned
returned by
by sport
were
sport fishermen.
fishernen.
iiine
tags and
and 20
Nine tags
20 tags
tags were
were returned
returned in
in
1973 by
by each
1973
each group,
grotrp' respectively.
respectively.
Three tagged
tagged bass
bass were
Three
were found
fognd dead;
dead; 12,
!2,
26' and
33 days
26,
and 33
days after
after being tagged.
tagged.
one fish
fish was
was recaptured
recaptured in
One
in 1973
1973 by
the
the tagging
tagging crew, given a
a left
left ventral
ventral fin
fin clip,
cLip, released
reLeased and
and counted
cognted as
as
a 1973
1973 release
retease (Table
(Table 4).
a
4).
o
No
tagged sturgeon were
No tagged
recaptured.
were recaptured.
1972 (Summer)
(Surnnerl
1972
o
From
From June
June through septernber
September 1972,
tg7z, 19
t9 striped
striped bass were
were tagged
tagged after
after
being
being captured in
in a
a bag
bag seine
(Table 5).
seine (Table
5).
tured by the 1973
tured
1973 commercial
comnercial fishery.
fishery.
O
o
o
Three of
of these
Three
these fish
fish were
were recaprecap_
One fish
fish was
r.r,asrecaptured
recaptured in
One
in 1973
1973 by
the
the tagging
tagging crew, given a
left ventral
fin clip" released,
a left
ventral finclip,
and cor.urted
counted as
released, and
as
a 1973
1973 release
(Table 6).
release (Table
a
6).
c
8.
Table 4.
Table
4.
t
Tag Recoveries
Recoveries of
Bass Tagged
Tag
of Striped
Striped Bass
Tagged in
the Smith
in the
Snith
and Unpqua
I'larch-lt{ay, L972
Umpqua Rivers,
1972
Rivers, March-May,
S
o
Tag
Tag
No.
No.
o
o
o
o
o
o
5
S
a
o
Lensth Sex
Length
Sex Tagged
2749
2749
2
7SA
2750
2755
2755
2757
2757
2758
2758
2768
2768
2773
2773
2774
2
774
5t
51
5l
51
61
61
2831
2831
2834
2834
2835
2835
2837
2837
2844
2844
2845
2845
2850
2850
2852
2852
2853
2
853
2855
2855
2856
2856
2861
2861
2869
2869
2884
2BB4
3372
3372
3375
3375
3384
3384
3388
3388
3389
3389
3390
3390
3402
3402
3409
3409
3429
3429
?896
2896
--
-------
6
600
56
s6
65
65
65
65
57
57
2782
2782 tlo
110
2785 59
2785
59
2786 66
2786
66
2790
2790 46
46
2795
2795 60
60
2796
2796
2798
2798
2800
2800
2805
2805
2811
2811
2820
2820
2823
2823
2830
2830
2825
2B7S
o
Date
Date
62
62
62
62
59
59
68
68
s555
97
97
65
6s
555
5
66
66
49
49
57
57
49
49
63
63
50
50
49
49
62
62
60
60
60
60
633
6
59
59
61
61
49
49
65
65
102
102
58
58
53
53
67
67
62
62
92
92
57
57
63
63
51
5l
53
53
---I!tt
---------
N
M
-It
l''!
N
--
It
N
--
tt
M
------
T
--
t{
11
----
N
iu
--
N
t{
It
r'l
N
lil
--
;,1'.1
N
slae/72
3/09/72
slos/72
3/09/72
3/10/72
slLal72
3/ro/72
3/10/72
slr0/72
3/10/72
3/to/72
3/10/72
slrL/72
3/11/72
Date
Date
Recovered
Recovered
Days
Days
At
At
Lar
Large
6
/0 s/72
6/05/72
3/11/72
3/Lt/72
s/rsl72
5/13/72
7/0r/7s
7/01/73
7/15/73
7/rs/73
s/rs/72
5/15/72
6/27/72
6/27/72
3/2s/73
3/25/73
6/rt/72
6/11/72
88
88
65
65
478
478
492
492
66
66
109
109
379
379
92
92
slLL/72
3/11/72
slLr/72
3/11/72
3/Lt/ 72
3/11/72
slrr/72
3/11/72
3/14/72
3 1 1 4 /7 2
7/sr/72
7/31/72
s/2s/72
5/29/72
B/12/72
8/12/72
sl16/73
5/16/73
6lL7/72
6/17/72
142
142
3
/r4 /7 2
3/14/72
3/
L4/72
3/14/72
3/14/72
3/14/72
sl14/72
3/14/72
3/14/72
3/t4/72
3/14/72
3 /1 4 /7 2
3/ts/72
3/15/72
3
l L 5 /7 2
3/15/72
3 /L S l 7 2
3/15/72
4/os/72
4/09/72
7/rs/72
7/13/72
6
/2 9/72
6/29/72
sl 06/72
5/06/72
s/ 3a/72
5/30/72
4
/1 6172
4/16/7.2
sl
2 8/7s
3/28/73
7
7/13/73
/Lsl7s
s/2
5/20/72
0/72
3/15/72
slts/72
s/1 3/72
5/13/72
3/15/72
slLs/72 6/27/72
6/27/ 72
3/15/72
slLs/72 5/03/73
s/0 3/73
3/15/72
3/ts/72
s/2e/72
5/29/72
3/15/72
3ltsl72
6/16/72
6/16/72
3ltsl72
3/15/72
6 l 0 7/7s
6/02/73
3/Ls/77 5/29/72
3/15/72
s/2e172
s/15172
3/15/72
7
7/15/73
/rs/73
3/15/72
3/ ts/ 72
s/a3/73
9/03/73
3/16/72
sl L6/72
s/2
0/72
5/20/72
3/16/72
3/16/72
s/1
4/72
5/14/72
3/16/72
sl 1 6 /7 2
sl28/73
3/28/73
3/16/72
sl
1 6 /7 2
s/1
5/13/72
3/72
3/18/72
3/tB/72
s/1 6/72
5/16/72
3/18/72
3/LB/72
e
/1 2/72
9/12/72
3/18/72
6/28/ 72
sl rB l 7 2
6/28/72
3/18/72
3/18/72
s/rs/72
5/15/72
3/19/72
3 /re /7 2
6/A6/72
6/06/72
3/19/ 72
sl0s/72
3/rel72
9/05/72
3/19/72
3 l tsl 7 2
8/02/
72
8
/A 2/72
slre/72 5/16/72
3/19/72
s/16/ 72
3/20/72
3/20/72
6 /0 s/72
6/09/72
sl
sl 3r/72
3/20/72
zoltz 5/31/72
3/23/72
sl23172
sl sal72
5/30/72
79
79
154
154
431
431
95
95
26
26
l2l
121
107
107
53
53
77
77
33
33
378
378
485
485
66
66
59
59
104
104
414
414
75
75
93
93
458
458
755
7
487
487
537
537
65
65
59
59
377
377
588
5
59
59
178
178
102
102
58
58
79
79
170
l7A
136
136
58
58
81
Bl
72
72
68
68
Area Tagged
T
Area
d
Area Recovered
Recoyered
Area
Ty?e
Type
1/
1/
Spruce Drift
Spruce
Drift
Bend
Big Bend
S
S
Spruce
Drift
Spruce Drift
UmpquaRiver
tJmpqua
River
C
C
Spruce Drift
Spruce
Drift
Reedsport
Reedsport
S
S
Spruce Drift
Spruce
Drift
Gardiner
Gardiner
S
S
Spruce Drift
Drift
Spruce
Unpqua River
thTlpqua
River
C
C
Spruce Drift
Spruce
Drift
Buoy
21
Buoy 21
S
S
Spruce Drift
Drift
Spruce
laill
4i1l Creek
Creek
S
S
Spruce Drift
liouth of
Drift
Spruce
'1outh
of Snith
Smith
S
S
River
Spruce Drift
Drift
Bend
Spruce
Big Bend
s
S
Spruce Drift
Drift
Urpqua River
Spruce
LJr!pqua
River
c
C
Spruce Drift
tsuoy 20
Spruce
Buoy
Drift
20
s
S
Hinsdalers
tlnpqua
Hinsdale's
River
Umpqua River
cC
Spruce Drift
l'louth of
Spruce
Mouth
Drift
of Smith
Snith
s
S
River
River
nf
Spruce Drift
I.Iorth Beach
Drift
Beach
Spruce
North
N
Spruce Drift
Drift
Bend
Big Bend
Spruce
sl
S
Spruce Drift
Drift
Spruce
S'cholfield Slough
Slough Ss
Scholfiold
Spruce
Big
Bend
Spruce Drift
Bend
Drift
S
S
Spruce Drift
Spruce
Drift
-C
c
Spruce Drift
Big Bend
Spruce
Drift
Bend
M
[{
Spruce Drift
Spruce
Drift
l'{i11. Creek
Mill
Creek
S
S
Spruce
Spruce Drift
Drift
Buoy
Buoy 20
20
S
S
e
Hinsdaler s
Hinsdale's
Bend
Big Bend
S
Hinsdaler s
Hinsdale's
UmpquaRiver
Uinpqua
River
C
c
Hinsdaler
Gardiner
Hinsdale's
s
Gardiner Channel
Channel Ss
Hinsdalefs
Hinsdale's
PlaceySands
Macey
Sands
S
S
llinsdale I s
Hinsdale's
Big Bend
Bend
S
S
Hinsdalers
1-linsdale's
Umpqua
Umpqua
S
S
H
insdalefs
I-iinsdale's
Unpqua
River
Umpqua River
cC
Hinsdalers
Red Light
Hinsdale's
Red
Light
C
c
Hinsdalefs
Hinsdale's
Gardiner
sS
Hinsdalers
Reedsport
Hinsdale's
Reedsport
S
S
c
Spruce Drift
Drift
Spruce
Big Bend
Bend
S
Spruce Drift
Spruce
Drift
Unpqua River
timpqua
River
C
c
llinsdale I s
Itill Creek
Hinsdale's
Mill
Creek
S
S
H i n s d a L est
Hinsdale's
Umpqua
UmpquaRiver
River
C
c
Hinsdalers
Hinsdale's
Linpqua River
!Jmpqua
River
C
c
Spruce
Spruce Drift
Drift
SchoLfield Slough
Scholfield
Slough Ss
HinsdaLe's
Gardiner Channel
Hinsdale's
Channel Ss
Hinsdalet
Hinsdale'ss
UnrpquaRiver
River
Umpqua
C
c
Spruce Drift
Spruce
Drift
Big Bend
Bend
S
s
Spruce Drift
Spruce
Drift
Buoy 20
Buoy
20
S
s
Spruce Drift
Spruce
Smith
Drift
Smith River
River
S
S
lvlaceySands
Macey
Sands Uinpqua
Unpqua River
River
C
c
Spruce Drift
Spruce
Drift
Dean Creek
Dean
Creek
cC
Hinsdalet
Hinsdale'ss
Umpqua
UnpquaRiver
River
cC
Lower Clark's
Lower
CLark's timpqua
UmpquaRiver
River
c
C
.
o
9.
o
o
Table 4.
Table
4.
Tag
Tag
No.
No.
o
o
o
o
o
o
a
.
o
o
Continued
Continued
Date
Date
Length Sex
Length
Tagged
.Sejx Tagged
3413
688
3413 6
3358
3
3 5 8 63
63
3416
34L6 59
59
61
61
2886
2886
2888
69
2 8 8 8 69
2889 104
104
2889
2891
2
8 9 1 67
67
2892
2892 50
50
3417
95
34t7
95
3431
56
343t
56
3457
60
s4s7
60
3460
64
3460
64
3462
3462 61
61
3464 55
3464
5s
3468
ss
3468 55
3471
60
347t
60
3489
3489
51
51
3501
3
5 0 1 101
101
3508
3
5 0 8 67
67
3604
59
3604 59
3514
3
5 1 4 67
67
3528
3
5 2 8 52
s2
3533
3
5 5 3 57
57
3537
3s37 57
57
3539
3559 42
42
3547
s9
3547 59
3548
35,{B 49
49
3550
433
3550 4
3554
35s4 46
46
3566
98
3566
9B
3570
3 5 7 0 57
57
3575
357s 103
103
49
3602
3()AZ 49
57. M
3606
3606 57
3584
3584 59
59
3597
3597 59
59
3621
362L 63
63
'1622
3622
57
57
3628
3628 62
62
3633
67
3633 67
3634
3634 98
98
3643 57
3643
57
3640
3640 69
6
3654
3654 81
Bl
3659
3659 59
59
1/
A
Symbols:
---
3/26/72
3126/72
3/26/72
sl26/72
3/30/72
3/
30/72
3/19/72
3
/L e /7 2
3/19/72
3
l L sl 7 2
3/19/72
3 /L e /7 2
s/Le/72
3/19/72
3/19/72
3 /re /7 2
4/03/72
4/osl72
4/03/72
4/ A3/72
4/06/72
4/ 06/72
4/ 06/72
4/06/72
4/06/22
4 /0 6 /2 2
4/06/72
4/a6/72
4/06/72
4 /a 6 /7 2
4/06/72
4/ 06/72
4/10/72
4 /7 0 /7 2
4/11/72
4/rt/72
4/14/72
4 /1 4 /7 2
4/17/72
4 /1 7 /7 2
4 /tB /7 2
4/18/72
4
/2 s/7 2
4/25/72
4/26/72
4/26/72
4/26/72
4 /2 6 /7 2
4/26/72
4/26/72
4/27/72
4/27/72
t,
N
4/27/
4 /2 7/7722
M
fi
-nt
N
I-{
---
------
td
N
N
t{
------F
F
---
---
N
N
l't'
---
N
M
N
------
-ill
--
N
l!l
--
4/28/72
4 /2 8 /7 2
5/01/72
s/ 0t/ 72
5/01/72
sl ot/72
5/01/72
sl oL/72
5/01/72
s/ aL/72
5/02/72
s/a 2 /7 2
s/ 02/72
5/02/72
5/02/72
sl a2/ 72
5/02/72
s/ 02/72
5/02/72
s/a 2 /7 2
5/02/72
s/a 2 1 7 2
sl a2/72
5/02/72
5/03/72
sl 0 3 /7 2
5/03/72
s/ 03/72
5/03/72
s/ a 3 /7 2
5/05/72
s/
os/ 72
5/08/72
s/0 8 /7 2
5/09/72
sl osl72
Days
Days
At
Date
At
Date
Recovered . Large
Recovered
Large
5/15/72
s/ts/72
7/30/72
7
/ 3a/72
6/01/72
6
/ Ar /72
6/04/72
6/ 04/72
5/09/72
s/os/72
9/24/72
e/ 24/72
3/03/73
s/03/73
7/-- /tz
7/--/72
s/ 3L/73
5/31/73
7/2s/7s
7/25/73
6/25/72
6/2s/72
5/06/72
s/06/72
8/15/72
8/ ls/ 72
7/13/72
7/t3/72
6/27/72
6 /2 7/72
6/14/72
6/ lr:/ 72
6/15/72
6 /L s/72
8/10/73
8 l L 0/7s
sl 2 1/73
5/21/73
6 1 2A/73
6/20/
73
s/1 4/72
5/14/72
s/2 8/72
5/28/72
1972
r972
7
/AL/72
7/01/72
3 /rsl 73
3/13/73
8/11/73
Bl tr/ 73
sl 1 6/7s
5/16/73
6/A4/72
6/04/72
6/04/73
6/A4/7s
s5/15/
/ r s /72
72
1973
I973
7/
7/09/73
Ae/7s
5/18/73
5/L8/ 73
5/14/72
5/14/72
7/02/72
7/02/72
7/01/72
7/01/72
8/19/72
8/Le/72
6
/ABl73
6/08/73
5/31/73
sl 3L/73
3/11/73
3/ LL/ 73
4/a6/73
4/06/73
sl Le/73
5/19/73
s/
5/01/73
01/73
5/19/72
s/rs/72
5/29/72
s/2e/72
50
50
126
t26
63
63
77
7?
51
51
189
189
410
410
423
423
478
478
80
B0
30
30
131
131
98
98
82
BZ
69
69
66
66
486
486
402
4OZ
429
429
26
26
33
33
66
66
321
32L
471
47L
384
584
37
37
399
399
14
14
434
434
377
377
12
L2
61
61
60
60
109
f09
402
402
394
394
312
3L2
338
338
381
381
361
361.
11
1l
20
20
Rgcovered
Area Recovered
Area
Area Tagged
Tagggd-,{lrea
Type
Type
2/
{,/
l{insdaLeI s
1-iinsdale's
Umpqua
River
UmpquaRiver
Gardiner Channel
Spruce
Sprucb Drift
Drift
Channel
Mill Creek
Mill
Butler
ButLer Creek
Creek
Cieek
i.lacey Sands
Nacey
Red Light
Light
$ands Red
Smith River
1!acey
Sands
tlacey Sands
Smith
Macey
l{acey San4s
Ranch
Noelfs Ranch
Sands Noel's
I'{aceySands
Buoy 21
21
Macey
Sands Buoy
!.lacey Sands
Nacey
Bend
Sands Big 8end
Otter Slough
Otter
Slough Smith
Smith River
Otter Slough
Otter
Buoy 20
20
SLough Buoy
Otter Slough
Otter
Slough Gardiner
Otter
-Otter Slough
Slough
-Otter
Otter Slough
Slough
Otter
Otter Slough
Reedsport
Slough Reedsport
Otter
Otter Slough
Buoy 21
21
Slough Buoy
Otter Slough
Gardiner
Slough Gardiner
Otter
Otter Slough
Slough Smith River
River
Noelts Ranch
Buoy 20
Noel's
Ranch Buoy
20
Spruce Drift
Buoy
Spruce
Buoy 20
Drift
?0
Buoy
Hinsdalets
Buoy 20
20
Hinsdale's
H i n s d a l e Is
Hinsdaie's
Gardiner
Gardiner Channel
Channel
Miii Creek
Big
Bend
t{ill
Big_Bend
Creek
l'lil l Creek
Mill
-Creek
l4ill
Mill Creek
Creek
Smith River
P.iver
l,iill
Nih Creek
l,li11
Mill Creek
Creek
Creek
Mill
lt{iIl Creek
Gardiner
Creek
l'{i11 Creek
Mill
River
Upqua
Creek
UppquaRiver
t
Hinsdale s
Hinsdale's
Providence
Providence Creek
Creek
liaeey Sands
Macey
Sands Umpqua
Uupqua River
River
Macey
ilacey Sands
Sands Umpqua
uruSyRiver
River
Macey
l4acey Sands
-Sands
llacey Sands
Macey
Sands Buoy
Buoy 20
20
Macey
l,laceySands
Sands Umpqua
River
UmpquaRiver
l4aceySands
Macey
Sands Smith
Snith River
t.iacey Sands
Flacey
Sands
Smith River
River
i.'tacdySands
Macdy
Sands
-::
l4aceySands
Macey
Sands
-l,,laceySands
Macey
Sands Umpqua
UmpqqaRiver
River
llacel' Sands
Macey
River
Sands Urnpqua
Unpqua River
l'lacey Sands
Macey
l"{i11.Creek
Sands Mill
Creek
iliaceySands
Nacey
lloel I s Ranch
Sands Noel's
Ranch
l'lacey Sands
iacey
Sands Umpqua
UmpquaRiver
River
Miii
i.'li11Creek
Providence
Providence Creek
Creek
Creek
'lacey
Sands
llacey Sands
Smith
Smith River
i.{aceySands
Macey
River
Sands tJmpqua
Unpqua River
C
C=
= C'ommercial,
M =
= i'loytaLity,
CornnexeiaT.,M
Mortality, R
R =
= Reeqture
Recapture by tagging
tagging crew,
erstrJ,
S = Sport.
Sport.
f
C
S
S
S
C
S
S
S
S
S
S
C
S
S
S
S
S
S
S
D
S
S
S
s
c
s
s
c
s
s
s
S:
S:
S
S
c
S
sS
S
s
S
S
S
S
S
S
S
S
S
C
S
s
c
s
C
c
C
S
S
S
S
cC
M
N{
S
S
s
s
c
S
S
C
C
c
S
S
S
C
s
c
R
R
s
c
S
C
o
10.
10.
o
Table
Table 5.
5.
o
Location and
and lJurnber
Location
Number of
of Striped
Striped Bass
Bass Tagged
Tagged in
in the
the
Smith and
l,Jmpqua
and iiinpqua
Smith
Rivers, June-septernber,
June-September, 1972
Rivers,
W7Z
Location
Location
o
Nunber
Number
llorth Fork
North
Noel.I s Ranch
Ranch
Noel's
Otter Slough
Sl.ough
Otter
B
l a c k t s Island
Island
Black's
Scholfield Slough
Slough
Scholfield
Spnrce Drift
Drift
Spruce
I
1
3
3
I1
1
1
10
Total
Total
19
3
3
o
Table 6.
Table
6.
o
Tag
No.
No.
3669
3669
3684
3684
3674
3674
3673
3673
Tag
Tag Recoveries
Recoveries of
of Striped
Striped Bass
in the
the Smith
Bass Tagged
Tagged in
Snith and
and
LlmpquaRivers,
Rivers, June-September,
June-September,1972
Umpqua
1972
Date
Date
Len
Length
Sex Tagged
Ta
Sex
56
5
49
49
4
400
5
577
-----
Days
Days
Date
Date
At
At
Recovered Large
Recovered
sl20/73
3/20/73
8/A2/72 6
8/02/72
/04/73
6/04/73
8/as/72 5/19/73
8/09/72
slrel7s
8/ s0/72 6/11/73
8/30/72
6/tl./Zs
6/ 24/ 72
6/24/
72
269
269
306
306
283
283
285
285
Area Tagged
Spruce Beach
Beach
Spruce
Otter
Slough
Otter Slough
Black's Island
Black's
Island
Scholfield
Scholfield
Slough
Slough
Area Recovered
Recovered
Area
ltill Creek
Creek
Mill
Snith River
River
Smith
Smith
Smith River
Unpqua River
River
Umpqua
= Recapture
Syntbols.. R
ff =
Reeqtute by tagging
tagging crew,
!/2/ Symbols:
creu, a
C = commercial.
Cormr,ereiaL.
a
1973
L973
From March
l'larch 55 to
to May
From
1973, 420
420 striped
May9.,
9., lg7s,
striped bass
bass were
given a
were tagged, given
left ventral
ventral fin
fin clip,
left
clip, and
and released,
released, including
including two
two fish
fish tagged
tagged in
previous
in previous
S
a
years that
thlt wereiresapfuilt:
vears
recaptured, gl.ven
a 'eft ventral rin.,{;'*,;;
fin k"p, and
1eaed,
giV*' "_
tele'qrel,
i1*,G*trar
Twowhite
vrhite
Two
tt1rgeofl 6nd
greensiurgeon
Fturgeon
stureegnwere
rrerealso
d one
oe green
;agged (Tabl9
7)
also'fugged
fiaurg'zl.
'
r-o.-
o
S
fl
S
.
a
'
:-'
:
Type
Type
1/
R
c
C
c
C
e
C
o
11.
11.
o
a
Table 7.
Table
7.
Location and
and Number
Nunber of
Fish Tagged
of Fish
Taggedin
Location
in the
the Smith
Snith
UnpquaRivers,
and Umpqua
and
Rivers, 1973
1973
Number
Location
LOcation
a
O
Spruce
Drift
Spruce Drift
Hinsdale I s
Hinsdale's
I'lacey Sands
Macey
Sands
i'iill Creek
Creek
Mill
Otter
Slough
Otter Slough
Luder Creek
Luder
Creek
Providence Creek
Creek
Providence
The
The Cutoff
Cutoff
Red Light
Red
light
Total
Total
e
Striped-Bass
Striped Bass
SturBeon
Sturgeon
I
I
I
00
00
0
0
I
1
0
0
0
0
1
7
7
54
54
9
9
I1
272
272
56
56
3
3
1
1
t177
g
0
420
420
3
3
The 1973
1973 commercial
cotunercial fishery
fishery returned
returned 33
plus one
The
33 tags plus
one tag
that was
was
tagthat
found tangled
tangled in
gill net.
in aa gill
found
net.
The sport
sport fishery
fishery returned
returned 29
The
29 tags,
tags, including
including
which was
one which
was removed
tenoved from
one
from the
the fish
fish and
and the
the fish
fish released.
released.
Three fish
Three
fish
were recaptured
recaptured by
by the
the tagging
tagging crew
(excluding those fish
were
crew (excluding
fish recaptured
recaptured on
on
the
samenight
the same
night they were
were tagged) (Table
(Table 8).
B).
VALIDITY
VALIDITY OF
OF PETERSEN
ESTIMATES
PETERSEN
ESTII,IATES
a
A
Petersen popuJ.ation
A Petersen
population estinate
estimate tnay
may be nade
made uihen
when either
either the
the marked
marked
fish becone
randonly distributed
fish
become randomly
distributed in
the population
population before
before the
the second
second sample
in the
sample
Ij
is taken,
is
taken, or,
or, the second
second sample
sample is
is selected
selected at
at random
randornfrom
population.
from the
the population.
Ricker
(1958) listed
listed six
six conditions"
Ricker (1958)
conditions, that
that if
met, should
if net,
should assure
assure that
that these
these
criteria
criteria are
are met.
met.
a
Each condition,
condition, as
Each
as related
related to
present study,
to the present
study, is
is
,liscussed below.
below.
discussed
I') Mwked
1)
Marked fish
suffep the
the same
sune natural
natt*al mortality
norta|itg
tmmarked fish.
the unmarked
as
fish suffer
aa the
fiah.
There was
was little
Little evidence
evidence to
There
to either
either support
support or
or contradict
contradict this
this assumption.
assumption.
o
o
Three
dead tagged
tagged fish
fish were
were reported
reported in
Three dead
in 1972
Ig72 and
and one
one in
in 1973.
Lg7S. The
The dead
dead fish
fish
in
in 1973
1973 reportedly
reportedly showed
showed signs
signs of
of infection
infection around
around the
the insertion
insertion of
the tag
of the
tag
and had
had severe
severe abrasions
abrasions where
and
where the
the stub
stub of
of the
the clipped
clipped ventral
ventral fin
fin rubbed
rubbed
I
against
against the
the abdomen.
abdomen.
t
12.
12.
o
t
Striped Bass
Taggedin
Tag Recoveries
of Striped
Bass Tagged
in the Smith
Smith
Recoveries of
Tag
L973
and
Rivers, 1973
and Umpqua
Umpqua Rivers,
Table 8.
8.
Table
Tag
Date
Date
Tag
Date
Date
N
o
.
Length Sex Tagged
Tassed Recovered
Recovered
No.
Length
C
o
I
oo
a
*
I
r
le
o
3743
3703
3704
3704
3705
3705
3708
3708
3727
3727
3690
3690
3695
3695
3699
3699
3744
3744
3746
3746
3754
3754
3757
3757
3769
3769
3776
3776
3782
3782
3787
3787
3788
3788
3793
3793
3795
3795
3797
3797
3807
3807
3309
3809
3
810
3810
3814
3814
3820
3820
3824
3824
3839
3839
3841
3841
3842
3842
3863
3863
3B65
3865
3866
3866
3867
3867
3853
3853
3872
3872
3883
3883
3893
3893
3894
3894
3895
3895
3911
59lr
3916
3
916
3
927
3927
3934
3934
3944
3944
3960
3960
3969
3969
60
60
76
76
69
69
5
577
6
633
55
55
69
69
7
733
58
58
59
59
57
57
56
56
5
58B
61
61
6
68B
5
588
56
56
65
65
6
622
7A
70
57
57
57
57
6
655
58B
5
75
75
5
599
60
60
599
5
599
5
66
66
5
533
67
67
62
62
5
58B
7B
78
54
54
5
599
60
60
58
58
67
67
78
78
64
64
61
61
6
633
62
62
6
600
--
-------
M
M
--l'.lt
M
----t,f
It
M
-----l.,t
!i
---
--
M
!'!
-tl
M
tr
M
tli
----i4
U
---
--
;U
F
14
U
----
."4
sla8/73
3/08/73
3/08n3
3/08/73
3/asl73
3/08/73
sl08/v3
3/08/73
3lo?/73
3/09/73
3/13/73
3/13/73
3/r3/73
3/13/73
s/t3/73
3/13/73
sl13/73
3/13/73
s/tsl73
3/13/73
3
/14/73
3/14/73
3/14/
3/14/73
73
3/Ls/7s
3/15/73
3/t6l7s
3/16/73
3
/16/73
3/16/73
sl16173
3/16/73
3/76/73
3/16/73
slLe/73
3/19/73
3lLsl73
3/19/73
slts/73
3/19/73
3/Le/73
3/19/73
3/te/7s
3/19/73
slLe/73
3/19/73
3/20/73
3/20/73
3/20/73
3/20/73
3/2a/73
3/20/73
sl20/ 7s
3/20/73
3/20/73
3/2a/73
3/20/73
3 /2 A /7 s
sl 2 1 /7 3
3/21/73
sl 2 L /7 3
3/21/73
3 /2 r/ 7 3
3/21/73
3/ 21/73
3/21/73
3 /2 2 /7 3
3/22/73
3/22/73
3/ 2?/73
3 /2 6 /7 s
3/26/73
3/27/73
3 / 2 7/ 7 3
s/2 7/7 3
3/27/73
3 /2 7/ 7 3
3/27/73
4 /A 2 /7 s
4/02/73
4 /0 s/7 s
4/03/73
4/ As/73
4/05/73
4 /A S /7 3
4/05/73
4/os/7s
4/05/73
4/06/73
4/06/73
4/10/73
4/ Lol 73
8 123/7s
8/23/73
t973
1973
4/
0s/73
4/05/73
s/rgl7
s
5/18/73
s5/03/73
l03173
L973
1973
v/t4/7s
7/14/73
s/19/73
5/19/73
s5/18/73
lrsl73
sl2r/7s
5/21/73
7/t6/7s
7/16/73
s5/15/73
/Ls/7s
6/02/7s
6/02/73
6
/ L 7/ 7 s
6/17/73
6/rgl
73
6/18/73
Bl2s/73
8/25/73
sltgl7s
5/18/73
4
/te/7s
4/19/73
5/27/73
s l 2 7/ 7 s
s/asl7s
5/03/73
5/18/73
s/18/7s
7 /27/7s
7/27/73
5/16/73
sl 16/73
9/05/73
e/0s/7s
t973
1973
5/18/73
s/LB/73
9/28/73
s/28/73
s5/17/73
i i 7/ 7 s
4
/2s/73
4/23/73
4/16/73
4/16/73
s5/19/73
/rs/73
4
4/05/
/ a s 73
/73
Days
Days
At
At
targe
Large
1
68
168
28
28
71
71
5
'S5
L23
123
67
67
66
66
. 669
9
L?4
124
62
62
79
79
93
93
94
94
162
L62
63
63
31
31
69
69
45
45
60
60
130
130
58
5B
169
169
59
59
192
192
5
588
34
34
26
26
59
59
15
l5
6
6/18/73
/rB/73
B9
89
c/2,2173
92
6/22/73
92
B
l ) . 1 / 7 s 142
8/3.1/73
L42
s/LB/73
5/18/73
53
53
E
l22/73
5/22/73
56
56
s/2s/73
1
80
9/23/73
180
6/ 30/73
6/30/73
95
95
6 /02/7s
6/02/73
61
61
5/21/73
sl2r/73
48
48
6/04/73
6/04/73
60
60
sl 2s/ 73
50
5/25/73
50
6/08/73
6/08/73
64
64
.,
4/08/7s
4/08/73
2
7/20/73
7 /20/73
101
101
Type
Type
Recovered
Tagged Area Recovered
Area Tagged
Luder Creek
Creek
Luder
Luder Creek
Creek
Luder
Luder Creek
Luder
Creek
Luder Creek
Luder
Creek
Luder Creek
Creek
Luder
Luder Creek
Creek
Luder ('reek
Creek
Luder
Ludet Creek
Creek
Luder
I"uder Creek
Creek
Luder
Luder
dreek
Luder creek
tuder Creek
Creek
Luder
Luder Creek
Creek
Luder
Luder Creek
Creek
Luder
Luder
Creek
Creek
Luder
Luder Creek
Creek
Luder
Luder Creek
Creek
Luder
Luder Creek
Creek
Luder
Li:der Creek
Creek
Ltder
tuder Creek
Creek
Luder
Luder Creek
Creek
Luder
Luder Creek
Luder
Creek
Luder Creek
Creek
Luder
Luder Creek
Creek
Luder Creek
Creek
Luder Creek
Luder
Creek
Luder
Luder Creek
Creek
Luder Creek
Creek
Luder
Luder Creek
Creel<
Luder Creek
Creek
Luder Creek
Creek
Luder
Luder Creek
Luder
Creek
Luder
Luder Creek
Creelt
Luder Creek
Luder
Creek
Luder Creek
Luder
Creek
Luder Creek
Luder
Creek
Luder Creek
Luder
Creek
Luder Creek
Creek
Luder
Luder Creek
Luder
Creek
Luder Creek
Creek
Ilinsdale I s
Hinsdale's
Luder Creek
Creek
Luder
Luder Creek
Luder
Creek
Luder Creek
Creek
Luder Creek
Creek
Luder
Luder Creek
Creek
I'lacey Sands
Sands
Macey
Reedsport
Reedsport
-
Garcaner
Gardiner
Red-I,ight
Red
Light
---
Buoy 18
18
Buoy
Rivet'
t{*pq.la Rivei
Umpqua
UmpquaRiver
limpqua
River
20
Buoy 20
Buoy
Buoy 18
lB
Buoy
River
Unpqua River
Umpqua
River
Unpqua River
Umpqua
Buoy 21
21
Buoy
UmpquaRiver
thnpqua
River
i,{ac€I Sands
r'acey
Sands
River
Umpqua
UnpquaRiver
Slough
Gardiner Slough
1/
1/
S
S
S
s
M
M
c
C
S
S
S
S
S
s
c
C
(.
C
S
S
S
C
C
S
S
C
S
S
C
s
c
c
c
c
R
R
c
UmpquaRiver
thiipqua
River
C
Buoy
21.
Buoy 21
R.iver
Umpqua
UnpquaRiver
Buoy 21
Buoy
2l
UrnpquaRiver
River
Umpqua
Ranch
N o e l r s Ranch
Noel's
S'.
S4.
--
UrnpouaP.iver
timpqua
River
Reicisport
Reedsport
River
Umpqua
UnrpquaRiver
Providence Creek
Creek
Providence
0tter Slough
Otter
Slough
River
Umpqua
Unpqua River
Jimmy
Jinny Creek
Creek
River
Umpqua
Umpqua River
Umpqua
Umpqua River
River
Buoy 12
Buoy
12
Snith River
Smith
River
Umpqua
UmpquaRiver
River
Reedsport
Reedsport
UnpquaRiver
River
Umpqua
UmpquaRiver
Umpqua
River
Buoy 20
Buoy
20
Brandy Bar
Bar
Brandy
Smith River
Snith
Unpqua River
River
Umpqua
Smith
Snith River
Joyce
Joyce Creek
Creek
c
C
S
S
C
C
S
S
cq
C
S
C
R
R
R
R
C
S
S
C
C
SS
C
C
C
c
c
c
c
S
c
c
C
C
S
S
S
S
C
c
c
C
s
S
S
S
o
1
3.
13.
o
c
Table 8.
Table
8;
Continued
Continued
Tag
Tag
No.
No.
Date
Date
Length
Length
Date
Date
Sex Tagged.
Sex
Tagged Recovered
Recovered
rd
3977
3977
3985
3985
3998
3998
3999
3999
3
987
3987
59
59
6
666
5
555
68
68
59
59
I
2904
2904
2917
2q17
2934
2934
2942
2942
53
53
93
93
95
95
58
58
6
611
61
61
7
777
I:l
1.7
t
2944
2944
2946
2946
2952
2952
2953
2953
297A
2970
297t
2971
c
Ifl
4/La/73
4/10/73
4
/t7/73
4/17/73
4l18/ 7s
4/18/73
4/t8173
4/18/73
4
/19173
4/l/73
t973
1973
6 / Lsl7s
6/13/73
s l 1 7/ 7 3
5/17/73
7/tu7s
7/11/73
7/20/73
7/20/73
57
57
29
29
84
84
92
92
-
4
'/2 4 /7 3
4/20/73
4/26173
4/26/13
4 /2 7l 7 s
4/21/73
4 / 2 7/ 7 3
4/27/73
6 /2e/73
6/29/73
6/ 02/73
6/02/13
6/a6/73
6/06/13
6
/20/73
6/20/73
7A
70
37
37
40
40
54
54
--
4 /2 7 /7 3
4/27/73
26
26
24
24
33
33
--
s/23/7s
5/23/73
4
/2
e
/7
s
4/29/ 73
sl
23/73
5/23/
73
4
/2 9 /7 3 6/01/73
6 /0r /73
4/29/73
4 /2 e /7 s 6/02/73
4/29/73
6 /A2/73
s/o
5/01/73
t/ 7 3 6/rs/7s
6/19/73
6
677
--
sl 0 L /7 s
5/01/73
sl22/7s
5/22/73
2l
21
2974
2974
7S
75
--
5/ 01/73
s/22/73
5/22/73
21
2l
297s
2975
71
7L
--
3/01/73
sloL/
7s
6/16/7s
6/16/73
46
46
2992
2992
2996
2996
2998
2998
0808
0808
0810
0810
62
62
---
5/07/73
sl07/7s
sla7/73
5/07/73
sl07/7s
5/07/73
s/
a8/73
5/08/73
s/08/73
5/08/73
5/24/
73
s/24/73
17
L7
41
41
7
733
62
62
72
72
433
4
97
97
58
5B
synbols:
!/1/ Symbols:
t
Days
Days
At
At
Large Area
Tagged Area
Area Tagged
Large
Area Recovered
Recovered
11
-*
ri
r.f
1'
--
---
M
ri
I,i
--
74
I'i
M
M
--
's/or/73
6 /17/73
6/17/73
sl 30/73
5/30/73
e /08/73
9/08/73
s/23/73
5/23/73
34
34
49
49
23
23
123
L23
15
15
FlaceySands
Sands
Macey
ir,.lacey
Sands
Macey Sands
Ludef Creek
Cieek
Luder
tuder Creek
Luder
Creek
Providence
Providence
Creek
Creek
Sands
Macey Sands
Macey
The Cutoff
Cutoff
The
Macey Sands
Sands
Macey
Providence
Providence
Creek
Creek
ltiiaceySands
Sands
Macey
l.lacey Sands
Ilacey
Sands
l"lill Creek
Creek
Mill
l4ill Creek
Creek
Mill
Providence
Providence
Creek
Creek
Providence
Providence
Creek
Creek
Providence
Providence
Creek
Creek
Providence
Providence
Creek
Creek
Macey
lfacey Sands
Sands
Macey
MaceySands
Sands
lJinsdaleI s
Hjnsdale's
Macey
l4acey Sands
Sands
Red
Red Light
Light
o
o
o
n'laceySands
Macey
Sands
Llnpqua
Iimpqua River
River
River
Unpqua
UmpquaRiver
Buoy 20
20
Buoy
Buoy 16
16
Buoy
S
S
C
C
C
C
S
S
S
S
Unpqua River
Uripqua
River
C
C
UmpquaRiver
River
Umpqua
C
C
Sctrolfield
S
Slough
S
Scholfiëld Slough
River
UmpquaRiver
Umpqua
C
C
Scholfield Slough
SLough
Scholfield
River
Snith
Smith River
Unpqua River
River
Umpqua
LlrupquaRiver
River
Umpqua
Buoy
20
Buoy 20
S
S
C
C
UmpquaRiver
River
Umpqua
C&"
e/
C
C
C
C
S
S
Scholfield Slough
Slough S!/
Scholfield
S/
q
Reedsport
Reedsport
S
Umpqua
UnpquaRiver
River
Umpqua
Unpqua River
River
Snith River
Smith
Buoy
Buoy 21
21.
t-laceySands
Macey
Sands
C
c
c =
conrnerei.al" MM == Mortality,
C
= Commercial,
MortaLiW" RR == Recapture
Reeqtwe by
tagging crew,
by tagging
erai,
= Sport.
5
S =
Sport.
Tagwas
aas tangled
tcvtgled in
2/ Tag
in sill
g,iLLnet
net with
with no
no fish.
a
fish.
qnd the
yeLeased.
3/ Tag
remoued and
Tag uas
was removed
was released.
the fish
a/
fish was
Type
Type
7/
1/
cC
C
c
D
S
C
c
a
L4.
14,
o
a
Fish Commission
inspected rnany
Comnission samplers
samplers inspected
the recaptured fish
fish at
at
Fish
many of
of the
buying stations
conmercial buying
1972and
1973.
stations in
in 1972
and 1973.
commercial
Fish that
that were
were inspected
showedno
no abnormal
abnornal external
external signs
signs of
at the
tag insertion.
of infection
infection at
the tag
showed
insertion.
In
In fact,
fact, once
once a tag
tag was
was renoved
removed from a fish;
fish, it
it vras
was often
often difficult
difficult
a
to detect
detect aa tagged
tagged fish
without close
fish without
close inspection.
inspection.
to
(1.963)reported
Chadwick (1963)
reported
Chadwick
doughnut-shapedproliferations
corinective tissue
and considerable
considerable necrosis
doughnut-shaped
proliferations of
of coinective
tissue and
necrosis
around the
spaghetti tags rnade
around
the insertioni
insertions of
of spaghetti
made of
of Temflex
lemflex tubing,
tubing, after
after 6
tl
nonths.
months.
Such
severe conditions
were not observed
presant study,
conditions were
during the
the present
study,
Such severe
observed during
even
on fish
fish at
year.
at large
large for
for over
over 1I year.
even on
Innediate tagging
Immediate
tagging mortality
mortality rvas
was nrininized
minimized by holding
holding fish
until they
fish until
a
were able
able to
to swim.
st'tin.
were
when several
fish were
few occasions when
On aa few
several fish
were captured
captured
,On
within aa short
short time,
tine, fish
be released
fish had
had to
to be
released without
without this
precaution.
within
this precaution.
Immediate
57 fish
35 of
Immediate tagging
tagging mortality
mortality was
was 37
fish in
in the
the spring
spring of
of 1972,
of which
1972, 35
,ro
were captured
Swere
captured in
in a single
single school and
exceeded the
the crewfs
crew's capacity
capacity to
to get
get
and exceeded
fish
gill net before they
the gill
they died,
fish out
out of
of the
died, and
three fish
aild three
fish in
tg71.
in 1973.
2)
2)
I
lflarked
Markedfish
fishare
areas
as uulnerab\e
vulnerabletoto the
the fi.shing
fishing being
being carried
caryied on
on as
as
wmarked fish.
the wirnarked
fish.
Tagging ceased
ceased when
when the
the commercial
conmercial fishery
fishery began.
began.
Thus,
differential
of tagged
Thus, differential
capture rate
rate of
tagged fish
not fully
fully recovered
fish that
that had
had not
from the
the stress
stress of
of tagging
probably minimal.
tagging was
was probably
from
minimal.'
t
There was
evidence
There
was no
no evidence
that fish
fish tagged
immediately prior
to the opening
that
tagged immediately
prior to
commercial fishery
opening of
of the conr,nercial
fishery
were caught
caugllt at
at aa different
different rate
than fish
were
rate than
fish tagged
tagged in
early spring.
in early
spring.
There is
is danger
danger that
that tagged
There
tagged fish
gredter chance
fish had
had a greater
chance of
of becoming
beconing
t
entangled
gilL nets.
in gill
entangled in
nets.
(1961) and
Lerrris
(1959) showed
Lewis (1961)
and Davis (1959)
that Petersen
showedthat
disc
disc tag
tag returns
returns of
of striped
striped bass l*ere
were sipgrificantly
significantly greater
selective
greater in
in selective
gear
(gill nets)
jaw ring
than were
hrere streamer
gear (gill
nets) than
streaner and
and jaw
ring tags.
tags.
petersen disc
disc
Petersen
tags were
were purposely
purposely avoided
present study
avoideti in
in the
the present
tags
for this
study for
this reason.
reason.
o
o
1
5.
15.
o
a
One
tag was
was found
found entangled
entangLed in
gill net
in aa commercial
commercial.gill
One tag
net in
in 1973,
1973, apparapparently
having been
been torn
torn loose
loose from
fron the
ently having
the fish.
fish.
tlhether the
the fish
fish tore
tore away
away
Whether
frorn the
the tag
tag or
or the
the fisherman
fishernsR inadvertently
from
inadvertently ripped
ripped the
the tag
loose while
while
tag loose
renoving the
the fish
fish from
frorn his
his net
net was
was not
known. If
removing
not known.
If the
the former
fonner was
was the
the case,
case,
a
then
the fish
fish had
had to
to be
be reasonably
then the
reasonably free
free of
of the
the net
net and
and became
becane tangled
tangled only
only
because the
the tag
tag became
becane snagged.
snagged.
because
3)
3)
a
Irteked fish
Lose their
their mark.
Mc,yked
fish do
do not
not lose
napk.
To date,
r3ate, tagged
tagged striped
striped bass
bass
To
have
have been
been recovered
rdcbvered up
to 33 years
after being
being tagged
taggeC with
up to
years after
with spaghetti
spaghetti tags.
tags.
Alperin
(f966) recovered
recovered striped
Alperin (1966)
striped bass tagged with
with bpaghetti-dangler
tags
paghetti-dangler tags
up to
years after
to 44 years
up
after tagging.
tagging.
t
The
tagS from
from these
these fish
fish were
The tags
were still
still securely
attached.
attached.
To
conrputePetersen
Petersen population
To compute
population estinates
estimates it
it was
was only
onLy necessary
necessary that
that
the fish
fish retained
retained the
the tags for
the
for 3 to
to 4
turtil, the end
end of
4 nonths,
months, until
of the
the commercial
cornrnercial
fishing season.
season.
fishing
It was
the tag
tag loss
was significant
loss was
It
was unlikely
unlikely the
significant in
in that
that short
short
a time.
time.
a
Samplers
exanined 1,980
1,980 commercially
comnercially landed
Samplers examined
landed fish
(62%of the
fish in
in 1973
1973 (62%
the
O
total catch)
catch) and
and counted
counted 25
25 fish
total
fish with
with a
a left
left ventral
ventral fin
fin clip.
clip,
these
fish lacked
lacked tags.
these fish
tags.
Three of
of
Three
There was
was no
no measure
neasure of
There
whether these were
of whether
were real
real
tag
tag losses
losses as
as they
they could have
have resulteC
resulted fron
from uncooperative fisherlnen
fishermen
maliciously removing
renioving tags,
tags, sport
sport fishermen
maliciously
fishermen removing
renoving the
the tags
tags and
and releasing
releasing
tlte
(this happened
the fish
fish (this
happened on
Least one
at least
on at
one occasion),
occasion), or
or fishermen pulling
pulling
the tags
tags and
and returning
the
returning them
thenr to
to us
at aa later
Later date.
date.
us at
ltrhenthe
the latter
Latter occurred,
When
occurred,
the fisherman
fisherman was
was questioned
the
questioned as
as to
to when
when the
the fish
fish was
was caught;
caught; anrd,
and, if
if a
fin-clipped untagged
rmtagged fish
fish had
had been
been noted
fin-clipped
noted in
in the
the catch
catch for
for that
that day,
day, it
was
it was
corrected and
and counted
counted as
as aa tagged
tagged fish.
corrected
fish.
0nly one
one such
such correction
correction was
was made.
nade.
Only
Three
fish out
25 fin-clipped
Three untagged
untagged fish
out of
of 25
fin-cl.ipped fish
fish represented
represented an
an estimated
estirnated
tag
loss of
of 12%.
tag loss
LTeo. The
The total
total nurnber
number of
of tag returns
returns in
in 1973
1973 was
corrected by
was corrected
this
amourt to
to correct
correct for
for tag
this amount
tag loss
loss.
o
16t
16
4)
yutdpmlg mixed
Matked
become randomly
Marked fish
fish become
with the
mi,red with
the unmarked;
unmarked; or,
the
on, the
dr,strLbution
distribution of
of fishing
effont
fishing effort
subsequent sampling)
6nsubsequent
(in
is proportional
sorpling) is
pnopontionaL
to
to the
nrrnber ofoffish
the number
fish present
present in
in different
geogrqhieal areas.
d|fferent geographical
@eas.
r tested
I
tested
for random
fandom mixing
mixing of
of tagged
tagged fish
fish by
for
by comparing
cornparingsize
size ranges
of tagged
ranges of
tagged fish
fish
a
witti fish
fish captured
captured in
in the
the commercial
with
conmerciat fishery.
fishery.
Randommixing
mixing was
assured
Random
was not
not assured
if
fish from
fron these two
groups were
if the
the fish
two groups
of equal
equal size,
size, but
groups
were of
but if
if the two groups
were of
of unequal
wrequal size,
si?e, random
randon mixing
rnixing was
wasless
less likely
were
likeiy to
to have
haveoccurred.
occurred.
a
In
In
1972, the
1972,
the rnean
mean length
length of
of fish
fish in
in the
the comrnercial
commercial fishety
fishery was
grearer
was 0.96
0.g6 cm
cm greater
than the
the mean
nean length
length of the
(Flgure 2).
the tagged
tagged fish
than
fish (Figure
2).
This difference
difference was
was
This
ett-testrr with unequal
testecl
tested by
by the
the 't-test" with
unequal saniple
sample sizes (Snedecor,
with a
(snedecor, 1956), with
a
a
resulting tt vaLue
(p = 0.236)
resulting
value of
of 1.20
120 (p
0.236).
fu 1973
19ZSthe
meanlength
Length of fish
In
the mean
fish in
in
the commercial
cotnnercial landings
landlngs was
was 1.54
1.54 cm
the
Less than
cm less
than the
the mean
nean length
length of
tagged
of tagged
(Ftgure 3)
fish
= 0.012).
3) with
(p =
fish (Figure
with a
a tt value of
of 2.54
2.54 (p
0.012).
ro
Thus, no
no difference
Thus,
difference
in nean
lengths was
apparent in
in 1972;
in
mean lengths
was apparent
whereas, in
lg72; whereas,
in 1973
lg73 the Drean
lengths
mean lengths
urere different.
different.
were
The
difference in
The difference
was apparently
in 1973
L973 was
apparently due
due to
to a nunber
number of
of
(less than 50 cm)
smaller fish
fish (less
smaller
in the
the commercial
crn) in
comrnercial fishery
fishery which were
were not
o
tagged.
tagged.
The striped
striped bass
bass in
i:r the
the commercial
commercial catch in
The
in Coos
Coos River in
in April
April are
are
predominantly
(unreported Fish
males (unreported
predominantly males
Fish Commission
Commissiondata).
data).
o
occurred on
on the
the Umpqua
UnpquaRiver,
River, a disproportionate
occurred
number of
of nales
males may
disproportionate nunber
may have
have
been tagged.
tagged.
been
Deterrnination of
sex was
inpossible for
Determination
of sex
was impossible
most of
of the
for nost
the fish
fish
that were
were tagged.
that
tagged.
O
If
the same
If the
sarnecondition
condition
If mostly
rnales were
were tagged,
If
mostly males
tagged, Petersen
Petersen estimates
estimates were
h/ere
stilL
if these fish
fish randomly
still valid
valid if
randomly mixed
mixed with
with females
and were
fenales and
were equally
equally
recruited
recruited to
fishery.
to the
the comn'.ercial
cornn',e:rcialfishery.
5)
b
o
tlatks
yeeouer7.
Marksare
are recognized
recognized m.d
and reported
reported on
on recovery.
The bright
bright orange
The
orange
or yellol
or
yellow spaghetti
spaghetti tags
tags r^:ere
were highly
highly visibl.e
and narked
visible and
marked fish
were easily
easily
fish were
recognized by both sport
recognized
sport anglers and
and commercial
comnercial fishermen.
fishernen.
Once
Once commercially
commercialLy
17.
17.
o
o
ol
.
o
(>
FI
q
a
(4
Ct
EA
-t
(tt.
{J
S
thF
.r{
P
oo
mor
'c, r D .
1-
€l
e)
r{
rd
.r{
( J c \ ol
F|atMl
L
e
at
(.)
c
.o .r{
oo
!a (\
o\r\o
b6
b0il [
(rl
F- €tX
.r.
g'sto
El n rr
(o)
atx
1-
+J
b0
6
.
a
a
h
0.)
.p
0)
o
ctr
x
F{
a
U a 4- a
+)
&
a
c)
I-
Fl
(}
J4
FI
o
C
t\
gi
OO
c
o
Xounbti
t2U3IOd
,{cuonbe.rg a'ricluacra d
S
the
from
Sampled
and
Tagged
Bass
Striped
of
Frequency
Length Frequency of Stripod Bass Tagged and Sanpled fron the
esnnerclal, Cateh, Unpqua and snith Rivers, L972
Length
2.
1972
Rivers,
Smith
and
Unipqua
Catch,
Connercia1
)
Figure 2.
Figure
b
'
C
')
'
LI)
.O
N
c.1
t)
-
LI)
'0
N
CO
O
18.
tB.
a
0
.
0
0
0
a
Lr
+J
a
((l
(J
>.
a
cI
F.
q
q
F.l
0)
a
(c
aa
d
.dootQo
UF
li <f st
9-l\g
tri
Fil
u
'c3cOr
C9.
'IJ Ff L?
O.(|\O
I?1
I
T90
bo
b0
O it
lr I
(!
o
L' trtx
03
*,
(l)
gt
E
.Fl
..4
.lJ
c
it
a)
0)
(-)
0
E{ CrX
a
e
_________________A
---t::ii
4
ri
g
.p
b0
s:
o
hl
j4
OO
Fr
o
h
-
0
c
o
CO
N-
'O
L
J
N-
-
o
eEeluac.rad
Xzuenbeij
,(cuenbarg 02B3U931Qd
o
o
Figure 3.
Figure
3.
Length Frequency
Frequerrcy of
of Striped
Length
striped Bass
Bass Tagged
Tagged and
and sanpled
Sampled from
fron the
the
Comrercial
Catch,
Unpqua
Commercial Catch, Umpqua and
and Smith
Smith Rivers,
Rivers, 1973
lg7{
Co
1
9.
19.
caught
caught bass
bass reached the
the buying
buying station
station they
they were
were repacked
repacked and
and iced
iced down,
down,
the
dealer nrould
the dealer
would easily
easily notice
notice tagged
tagged fish
fish as
as the
the catch
catch was
was packed.
packed.
The number
nurnber of
of reported
reported tag
The
tag returns
returns at
at the
the two
two main
buying stations
main buying
stations
t';as checked
checked against
against the
the number
nunber of
of fish
fish landed
landed at
was
at each
each station
station in
in 1972
1972 and
and
t
1973.
1973.
Striped
lanclings were
were reported
Striped bass
bass landings
reported in
pourds so
in pounds
so the nunbers
numbers landed
landed
were
g.4 lbs
estinated by
using an
an average
average rteight
were estimated
by using
weight of
of 8.4
(n =
lbs in
lgTz (n
in 1972
= 370)
370)
and 9.1
9.1 lbs
lbs in
(n == 1,705).
in 1973
and
1973(n
1,70s).
a
The ratio
ratio of
of each
each company's
The
companyfslandings
randings
to
landings, nultiplied
to the
the total
total landings,
multiplied by the
number of
the total
totaL nurnber
of tag
tag returns
returns for
for
both
cornpaniescombined,
gave an
both companies
conbined, gave
an "expected"
number of
of tag
tag returns
returns for
"expectedrt nunber
for each
company
fish were
company if
if tagged
tagged fish
were randornly
randomly distributed
distributed within
within the
the catch
catch an<l
and both
both
o
conpanies
companies reported
reported all
all tags
tags processed
processed through their
their plants.
plants.
These expected
expected
These
returns were
compared with
actual returns
returns
were compared
with the
the actual
returns by aa chi-square
chi-square test
goodtest of
of goodness of
of fit,
fit, adjusted
g).
adjusted for
for continuity
(snedecor, 1956)
continuity (Snedecor,
ness
(Tabre9).
1956)(Table
oc
a
The
conputed chi-square
chi-square value
The computed
value in
(p == 0.033)
Ln 1972
1972 was
was 4.64
4.64 (p
0.035) and
and in
in
1973 was
(p = 0.621).
1973
was 0.28
0.28 (p
Thus in
in 1972,
1972, tagged
tagged fish
Thus
were not reported
fish were
equally by
by both
equally
both companies.
conpanies.
This
could have
This could
have been
been due
nonrandom
due to
to a nonrandon
distribution of
marks in
of marks
distribution
in the
the catch,
catch, but
but as
as a practical
practical matter
matter I
believe
I believe
that
all commercially
comnercially caught tags were
that not
not all
were recovered
recovered in
in 1972.
1972. The
The low
low
chi-square value
value in
in 1973
1973 suggested
chi-square
suggested that
that both
both companies
companies reported
tagged bass
bass
reported tagged
o
at the
the same
at
sane rate.
rate.
This low
low chi-square
chi-square value
value and
and the fact
This
fact that
that only
only three
three
fin-clipped fish
fisir were
were examined
exanined that
fin-clipped
that did
did not
not have
have tags,
tags, indicated
indicated the tag
return
return rate
rate in
in the
the 1973
1973 couunercial
commercial fishery
fishery was
probabLy very
was probably
good.
very good.
ro
6)
6)
Onl-g a
a negligibZe
Only
negligible anrowt*
amount of
of neeruitment
recruitment to
to the
the catchable
catehabT.epopuT.aaioy
population
oecu?$
dt*ing the time
time the
occure during
the recoveries
reeoueyLes arc
arc being
being made.
made. Growth
of striped
Growth of
striped
bass
tine of
(1,'rtarch-l{ay}and
bass betr+een
between the
the time
of tagging
tagging (March-May)
and the
the time
tine of
recovery from
of recovery
from
b
o
the commercial
conmercial fishery
(ivlay-June)is
fi-shery (May-June)
the
negligible (based
(based on unreported Fish
is negligible
Comnissiongrowth
growth data).
Commission
data).
Therefore,
it is
is unlikely
Therefore, it
unlikely that
that any
any significant
significant
20.
0.28
0
o
t/)
frt'l
50
Cf 'Fl
g)P
l$
.!.t +,
21.02
c)
6t
oo@
Fl
C.r
tA
Oro\OodO
Glcf,MtF{d
F{
<l
0.18
oo
23
63.7
OOFta!.)i{()
\oo\oGrc{
(\t
c)
11.98
Company A
>E
o
o
t\OF{
o
0.10
33
33
3,152
r{)
(\t
Fl +)
C!
a
v)
10
oc)
oo
c\l
!4
36.3
th
v)
2,007
O
Eit
o9i
(JE
Fl
1,145
t{
CB C6
ar)
\0
18,268
,r1 d
1973
Company B
+rh
c)
b0>
.r-'l
tr
oo
10,420
Striped Bass Landings, Tag Returns, and Computation of Chi-Square Values Comparing the
Rates of Tag Returns of the Two Major Commercial Buying Stations on the Umpqua River,
1972 and 1973
a)
€ i
28,688
Total
S
c\l
@({
(,
q { to{,
r
x
Eo)
OE
hl
C(
\O
r.o
O C\t
o
Number Landed
Table 9.
18
1.81
10.96
2.83
7.04
tr'g|./l
c!obo
F:tl(s
hEF{o
q-{
(d
o.
+roo
o&,
Ft{
uto
l+{
b0
..o
'd
\,
ooo(llE
Tr'OF"5
qtrq,Zc)
(B(db0t+{tr
*lbldO€r0
+rc)5
AFitrti.FrCf
"o(t)q)(l)(J|d)
C..oO,OOI
i]EtrEa..,{
op0)Sx.c
tuzo"zr$(J
Pounds Landed
w
to
r$
t-"
18
d
.d
k+rr-
o
6
uI
a0
+J (lJol
V)&ea
Ol
(\lf\$l
Fl
ta
F{
' ( ' o9g{ . r ,
ocs
o
tO
12
F{q|61
\O
\O
r+
c'l
(4 boF\
o CSOI
cdF"r
.r.l
60.9
3,066
!f,
FIOOO
Chi-Square
o
F{
r35
H+l
r! 0)
,-t
lo
Expected Number of Tags
Oi) t4
gtr
.Ft
\o
F{
Number of Tags Reported
6O
o
rn
(\
39.1
G +.1
' i+t
[<
F\\OO\OOF{
6r
\o
\o
\OO
Percentage of Total Landings
o
bt.c
Ol('r@
1,969
a
L')
25,627
|,)CE
gE:
5r
50
+r3
O t-.
1972
F*
Company B
o()
GI
<it
00@sf
o
Company A
t
w
\JE
€(J
ro
}/)
()C)
5,035
5c)
91. Fl
oo
oc
42,088
+J F{
(d(B
+J.Fi
4.64
r(r
\o
oco
Total
o
.Ft
16,461
O
o
2r.
21.
gill net,
to the
number of
the tagging
net, became
became
of small fish,
fish, unrecruited
r,mrecruited to
tagging gIll
nurnber
recruited
recruited during
season. There
Theie was
during the commercial
connercial fishing
fishing season.
vras probably aa
(frorn Figure
snall
small amount
amount of
of recruitnent
recruitment in
in 1973
1973 (from
Figure 3)
3) but
but not
not enough
enough to
to
significantly affect
significantly
the results.
affect the
resul.ts.
t
RECRUITED
POPULATION
ESTIMATES
POPULATIOII{
RECRUITED
ESTI}.{ATES
Population estimates
(1951)modificaPopulation
estinates were
Bail.eyfs (1951)
were computed
corputed using
using Bailey's
modification
tion of
of the
the basic Petersen
Petersen equation.
equation.
o
Confidence
were estinated
estimated
Confidence limits
linrits were
by the methods
rnethodsdescribed
(1948).
by
(1948).
described by
by Chapman
Chapman
fish
I
assumed that
that all
I assdned
all fish
landed by the commercial
landed
were checked
even though
connercial fishery
fishery were
checked for
for tags even
though Fish
personnel did
Corunissionpersonnel
physically examine
Commission
did not
not physically
exanine each
each fish
fish for
for aa tag.
tag.
o
This
assumption was
This assumption
was probably false
based on
unequal return
faLse in
in 1972,
1972, based
the unequal.
on the
retum
of
of tags from
frorn the
the two
two buying
buying stations.
stations.
oo
In 1972,
1972, 430
In
430 bass
bass were
were tagged, and
and an estimated 5,035 were
were landed
landed in
in
comnercial fishery,
the commercial
fishery, including
including 18
LB tag
tag recoveries.
recoveries.
Based
Based on
on these
these data,
data,
= 69,996
the
estinated recruited
the estimated
population was
was 113,973
with N
N =
recruited population
IL3,973 fish,
69,996 and
fish, with
and
o
U
fNr ' == 190,524.
1 9 0 , 5 2 4 . The
T h e estimated
e s t i n a t e d rate
e x p l o i t a t i o n was
w a s0.042.
r a t e of
o f exploitation
A.042,
In
In 1973, 420
420 bass
bass ruere
were tagged, an estj.nated
estimated 3,206
3,206 were
were Landed
landed by
by
the
connercial fishery,
fishery, and
tags nrere
the commercial
were recovered from the
ancl 33
33 tags
cornnercial
the commercial
o
fishery.
fishery.
The total
total tag recovery
was corrected
The
recovery was
corrected for
loss with
rrrith aa resulting
for tag
tag loss
resulting
estimate of
of 38
estimate
58 tags
tags recovered.
recovered.
population was
The estimated
The
estirnated recruited
was
recruited population
= 24,816
34,537 fish,
fish, rvith
34,537
with I'l
N =
24,816 and
F == 48,475.
and N
48,475.
o
exploitation was
was 0.090.
exploitation
0.090.
The 1972
1972 estimate was
hrasrecomputed
The
the landings
landings from
recomputed using only the
Company
from Company
(Table 9).
A (Table
A
9).
to
o
The
Tha estimated
estirnated rate
rate of
believe that
that Conpany
Company A
II believe
A returned
returned tags ata
rate.
ata reliable
reliable rate.
The 12
12 tags
tags returned
The
were corrected
L4 tags
tags based
based on
returned by Company
ConrpanyAA were
corrected to
to 14
on
the 1973
1973 estimate
estimate of
12%tag
tag loss.
loss.
af 12%
The corrected
corrected estimate of the recruited
The
recruited
o
22.
22.
popuLationwas
population
was 56,473
tr02,447. The
The corrected
56,473with Nry == 32,343
32t343and
and ilN =* 102,447
corrected
.
estimated rate
exploitation, asuniing
of exploitation,
estimated
Company B
have
rate of
assdning that
that Company
B should have
returned, tags
returned
tags at
the same
sane rate
rate as
ConpanyAA was
was 0.084.
at the
as Company
0.084.
The corrected 1972
1972 exploitation
exploitation rate
The
estimated 1973
rate of
of 0.084, and
and the estinated
1975
I
e:gloitation rate
exploitation
0.090 are
rate of
of 0.090
conparable.
are comparable.
population
The
The recruited
recruited population
decreased
56,473 fish
fish in
decreased from
fron 56,473
in 1972
1972 to
to 34,537
34,537fish
ftsh in
decrease
in 1973.
1973. This decrease
is
is not
not alarming
alarming and
and is
is no
no doubt
doubt due
due to
to the
the doslnant
do1nant 1966
1966 brood
brood year of
striped
of striped
o
being removed
bass being
population through
natural and
mortality
renoved from
the population
through natural
fron the
and fishing
fishing nortality
along with
with reCuced
reduced recruitnent
recruitment of
of brood years
years following
following 1966.
1/
1966, U
(L973) estimated
Aney (1973)
population of
Unpqua
Aney
estinated the
striped bass
bassinin the
thetJmpqua
the population
of striped
o
River
Ln'!,972,
River in
1972, based
based on tagged fish
fish released in
in the
the spring
spring and sumrer
summer of
of
L972,
and 15
L5 tags put
1972, and
put out by the
lTildlife Commission
Comnissionduring
the
the Oregon
Oregon wildlife
during the
summer.
sunmer. He
He used
harvest of
41 tagged
tagged
used the estimated sport
of 6,036 fish
fish and
sport harvest
and 41.
aS
oo
fish
fish recovered in
in the
the sport
sport catch to
to conpute
compute a recruited
recruited population
population of
of
66,661. As
661661.
As Aney
was complicated by releasing
Aney noted,
noted, however,
however, this
estinate was
this estimate
releasing
population throughout
tagged fish
fish into
into the
the population
throughout much
nuch of
the sport
fishing
of the
sport fishing
o
season. Recruitment
season.
Recruitment of
new fish
rluring
of new
fish into
into the
the catchable
catchabl.e size
size range
range during
the spert
spc"t fishing
fishing seascn
the
population size
seascn could have
have overestimated
overestinated the real
size
real population
at
at the
the time
time of
of tagging,
tagging, while
while the
the capture
capture and
and subsequent
subsequent release
release of
of fish
fish
o
beyond the
the bag
(I
bag limit
lirnit could have
beyond
population (I
have underestimated
underestimated the real
real population
an
am assuming
assuming that
that an angler
angler would selectively
selectively keep
keep a tagged fish
fish rmder
under the
the
latter condition).
latter
condition).
o
l'4ypopulation
population estimates
My
estimates were
were restricted
to fish
to the
restricted to
recruited to
the
fish recruited
corunercial fishery
fishery while
while Aney's
Aney's were
rrrerefor
to the
commercial
for fish
fish recruited
the sport
recruited to
sport fishery.
fishery.
Both small
small and
Large members
Both
population are not
not fully
and large
nernbers of
the popul.ation
of the
to
full.y recruited
recruited to
b
y1/ The
Ihe dominance
dominozce of
the 1966
broodyear
year was
wasbased
basedononecale
scale malysis
analysis of
of
of the
1.966brood
the age dLstrf.lsution
the
distribution of
catch.
of the con2mercrtal
conrnereial ectch.
l.
23.
23.
the
gear.
the comnercial
commercial gear
The size
size frequency
frequency histogran
fish in
The
histogram of
of fish
in the
the sport
sporr
fishery (Figure
(Figure 4)
4) shows
shows relatively
rel.atively high percentages
percentages of
fishery
of small
srnall and
larg6
and large
fish
contribute more
heavily to
more heavily
to the
the sport
fish which
which contribute
sport fishery
fishery than
than to
to the
the cOmconmercial
fishery.
mercial fishery.
o
.
Considerlng
the differences
differences in
in recruited
populations to
recruited populations
Considering the
to each
fishery,
each fishery,
/ueyts estimate
estimate of
of 66,661
66,661 bass
bass recruited
recruited to
to the sport
Aney's
sport fishery,
fishery, and
and ny
my
estimate of
of 56,473
56,473 bass
bass recruited
recruited to
to the
estimate
the commercial
comnercia!.fishery,
fishery, were
were oof
O
comparable
comparable magnitudel
magnitude
I,{IGRATION
PATTERNS
MIGRATION PATTERNS
The small
small number
nunber of
of striped
st?iped bass
bass that
that were
vrere tagged,
The
tagged, coupled
cotryled with
with the
t
lack
specific recovery
recovery area
area data
data for
lack of
of specific
for most
most of
of the
the commercial
connercial tag
tag
returns,
madeany
any critical
critical analysis
analysis of
of migration
patterns impossible.
returns, made
migration patterns
irnpossible.
I.
oo
There
several returns
returns from
Srnith River
from Smith
River of
There were
were several
of fish
fish tagged in
in the
the Unipqua,
Urnpqua,
and
which suggested
suggested that
and vice
vice versa,
versa, which
that striped
striped bass
bass in
in the
the two
turo rivers
rivers are
not discrete
discrete populations.
populations.
not
o
However, no
no tags
tags were
were returned
However,
returned from
fron any
any areas
areas
outside of
of the
the Smith
srnith and
andiirnpqua
unrpquarivers,
outside
rivers, indicating
indicating the
the population
population is
is
confined to
to the
the basin.
confined
basin.
ACISIOIIILEDGPIENTS
ACKNOJLEDGNENTS
o
Neil
Gary Hostich,
Neil renEyck,
TenEyck, Gary
Hostick, and
Hjort were
and Randy
Randy Hjort
were the
the primary
prinary field
field
workers responsible
responsible for
for tagging
tagging of
of the fish
fish and
workers
and monitoring
nonitoring the
the commercial
comne:ncial
return of
of tags.
return
tags.
o
Other
Other Fish
Fish Comnrission
Commission enployees
employees who
who participated
participated in
the
in the
tagging
Dennis Isaac,
Isaac, xlerlyn
tagging work
work lvere
were Dennis
Merlyn l{ough,
Hough, Reese
Reese Bender, and
and Bill
Bill
l'{ttll.arkey.
Mullarkey.
Earl Morris,
Morris, .a
a co$urercial
Earl
commercial fisherrnan
fisherman fron
from the
the Umpqua
Umpqua River,
River,
assisted in
in the
the tagging operation
assisted
operation in
in 1972.
1972. David
David Anderson,
Anderson, Oregon
lrJildlife
Oregon Wildlife
comnission, collected
collected tag
tag return
Commission,
return information
information from
fron many
nany of the
the sportsport-
'S
o
caught striped
striped bass.
bass.
caught
o
24.
24.
I
a
(n
h
O
.P
.rl
*,
tr
0)
o)
4.,
o
(-)
U
.o
s.P
o0
I
t:
0
a
o
o
-4
-4
-4
00
I!)
J
o
Auonboi.j
fcuanbo.rg ofu3uac.re6
t3U9OJ.d
b
Figure 4.
Figure
4.
Frequency of
Sport Catch,
Catch'
Length
length Frequency
Bass from
from the
t]re Sport
of Striped
Striped Bass
Aney, 1973)
1973)
(based
on
data
from
Aney,
fton
data
Umpqua
Rivers , 1972
tlryqua and
and Smith
Srnith Rivers,
1972
25.
25.
TI.TERATURE
CITED
LITERATURE
CITED
Alperin,
I. 9.
ll. 1966.
Alperin, I.
1966. Dispersal,
migration, and
origins of
and origins
of striped
bass
Dispersal, migration,
striped bass
frorn Great
from
Great south
South Bay,
Bay, Long
Long lblandr
I1and. New
NervYork
York Fish
Fish and
and Game
Jour.,
GaneJour.,
1
3(1):79.Lt2.
l3(1):79.l12.
ltt. W.
hey, W.
l''r. 1973.
1973. Umpqua
Aney,
Umpquastriped
striped bass
basS sports
fishery survey,
sports fishery
survey, 1972.
ig7|.
Oreg.
State
GaneComm.
rYimeo. 35
p,
Oreg. State Game
Conn. Mimeo.
35 p.
Bailey,
Bailey, N.
N J.
J J.
on
J
195r.
estinating the size
1951
slze of
On estimating
of rnobile
mobile populations
from
recapture data.
data. Biometrika,
from recapture
Biometrika, 38:293-306.
58:2gS-366.
calhoun,
J. 1953r
A. J.
Calhoun, A.
Aquarium
1953
tests of tags
tags on
on striped
striped bass.
Aquarium tests
bass.
Fish and
and Game,
Garne,39(2):209-218.
Fish
39tZ)2209-2L8.
o
o
calif.
Calif.
chadwick,
H. K.
K. 1963.
Chadwick, H.
1963. An
finevaluation
evaluationofof five
fivetbg
tagtypes
typesused
used in
in a striped
striped
bass mortality
nortality rate
rate and
and migration
migration study.
bass
Fish and
study. Calif.
calif. Fish
Gane,
and Game,
6 4 -8 3 .
4
9( 2 ) ::64-83.
49(2)
chapman,
D. G.
G. 1948.
Chapman, D.
A rnathematlcal
1948.
of confidence limits
A
mathematical study of
lirnits of
of
salmon
calcul.ated by
by sample
salmon populations
populations calculated
tag ratios.
sample tag
ratios.
Int. Pacific
Pacific
mt.
salr.ronFish
Fish Comm.,
conn., Bull.
l,ld. 2,
Bull. No.
2, pp.
pp. 67-85.
6z-8s. New
Salmon
Newl'Jestninister,
B.c.
estminister, B.C.
Davis, W.
trf. S.
s. 1959.
Davis,
1959. Field
Field tests
tests of
Petersen, streamer,
of Petersen,
streamer, and
and spaghetti
spaghetti
tags
on
striped
(inlalbaum). Trans.
bass, Roccus
Roccussaratilis
saxatilis (Walbaum).
tags on striped bass,
Trans. Amer.
Amer.
F
i s h . Soc.,
S o c . , 88(4):319-329.
Fish.
B B ( 4 ): S t 9 - 3 2 9 .
OO
Fish Commission
Comrnissionof
of Oregon
OregonState
Oregonand
and Oregon
State Game
GameCommission.
Fish
Comnission. 1946.
1946. The
The
Unpqua
River study.
Umpqua River
study, Mimeo.
l-{imeo. 85
p.
85 p.
R. N.
14. 1961.
Lewis, R.
1961.
cornparison of
of three
striped bass
Comparison
three tags on striped
bass in
in the
the
ChesapeqleBay
Bay area.
ChesapeaJe
area. Chesapeake
Chesapeake
Sci . 2(l-2):3-8.
2(l-2):3-8.
Sci.
a
O
l,{ullen,
E. L973,
1ulIen, R. E.
Ecology
1973.
of shad
shad and
and striped
striped bass
Ecology of
bass in
in coastal
rivers
coastal. rivers
and estuaries.
estuaries. Fish
and
Fi-sh Comm.
Comrn.Oreg., Annual
Annual Rept. July
July 1,
to
l, 1972
LSZZto
Jr-nre30,
L973. Flirneo.
June
30, 1973.
12
p,
Mimeo.
12 p,
Ricker,
Itl. B.
Ricker, W.
E. 1958.
1958. Handbook
Ilandbookof
of computations
computations for
for biological
biological statistics
statistics
populations. Fish.
fish populations.
of
of fish
Res. Bd.
Bd. Can.,
Fish. Res.
Can., Bull.
Bull. 119.
llg.
Ottawa.
Ottawa.
3
300p.
00 P.
snedecor, C.
G. W.
I',1. 1956.
Snedecor,
19t56. Statistical
statistical
l.iethods.
Methods.
Ames. 5
Ames.
3 4 p.
p.
534
o
b
'S
o
pless,
Iowa State
state Univ.
Iowa
univ. Press,