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SHELLFISH
INVESTIGATION
SHELLFISH
INVESTIMTION
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(1'f','
REPORT
INFORMATION
REPORT
NO.
1-75
INFORI.IATIOI.'I
NO. I-75
)'
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P L E A S E RETURN
R € T U R N TO
PLEASE
TO:
N O R T H W E S T COASTAL
NORTHWEST
C O A S T A L IINFORMATION
N
ceNrER
C2NTER
o.su MARINE SCIENCE
OS_u.
CENTER
"o*,*e!ciJ[?Hf,l'pN
NEWPORT.
OREGON 97365
IWPORT.
OREGON
97365
503-a67-30t
503867.30, I,
THT1974
FISHERY
THE
CLAM
FISHERY
RAZOR
CLAM
1974RAZOR
o
by
by
o
Terry
Terry Link
Llnk
o
o
o
Fish Commission
Fish
of
Conunission
0regon
of Oregon
$lanagenent
Management &
Division
Research
0ivis{on
& Research
.
o
May
May1975
1975
;'t'
I
o
FISHERY
THE
1974 RAZOR
FISHERY
MZORCLAM
THET974
CLAM
I NIRODUCT ION
INTROII'CTION
Razorclam
frqn March
Marchthrough
Razor
from
clamcatches
catcheswere
weresampled
throughSeptember.
Septernber.Clatsop
sampled
Clatsopbeaches
beaches
were
were
o
sampledfor
for number
numberand
andage
harvestedand
sampled
compositionof
andthe
ag€composition
of the
the clams
clamsharvested
dlstribution and.
the distribution
and
nwtber
number of
from other
other beaches
south
of diggers.
dlggers, Data
of Tillamook
Tillarnok Head
thta from
south of
Headwere
werecollected
beaghes
collected as
as
permltted. Data
tlne
time permitted.
prcgram.
Datawas
wascompiled
conpiledon
returnedfrom
fromthe
on clams
clamsreturned
the 1973
1973tagging
tagglngprogram.
o
SPORT
FISHERY
SPORT
FISHERY
..,..
0urlng the
the 1974
on 44,000
1974season
season347,000
During
347,000clams
clamswere
weredug,
dug, on
44,000digger
diggertrips
trips to
to Clatsop
Clatsop
o
beaches.
beaches. This
This represents
andaa 52.1%
represents a
a 42%
decrease in
in d'lgger
digger trips
tripsand
421,decrease
52.!l decrease
decreasein
in the
(Figure1).
number
clamsdug
dug compared
compared
number of
of clams
to
Thetwo-mile
to the
the 1973
season(Figure
1). The
turo-milelong
long Seaside
1973season
Seasl.de
a
for 29.8%
beach
beach accounted
accounted for
of
?9.8%of
of the
29,6%
digger trips,
and29.6%
of the
the clams
the digger
trips, and
clamsdug.
dug. AA 42.2%
Inin42.2%
.
o
creaseover
over the
averagespring
the average
springrainfall
reductionin
crease
rainfall contributed
in all
contributedto
to aa reduction
all recreational
recreational
usagein
in the
usage
the Clatsop
Clatsoparea.
area" Table
Table1I lists
rates and
of
llsts the
harvestcatch
catchrates
andnumber
the harvest
number
of digger
dfgger
trfps by
trips
by statistical
statistlcal area.
area. Clam
to only
amounted
to
Clamwastage
wastage
amounted
only1.5%.
1.58.
o
e.0
2.0
1.8
1.8
o
16
1
.6
1.4
1.4
(,
1
.2
1.2
OF
(J
r|-
1.O
1.0
o
*
.8
.8
o
0
o
iF
o=
'-
. 66
!E
.+
.4
Conrnercial
o
.2
,?
1947 49
1947
49
Flgure1.
Figure
l.
61
63
61
63 65
73
75
65 67 69 71
Year
Year
Annual
Number
from 1946
of Clams
Present,Shadded
Annual Number
of
to Present,
Areas
ClamsDug
1946to
Dugfrom
Shadded
AreasIndicate
Indlcate
Number
of Clams
Number
of
ClamsWasted.
Wasted.
51
53
55
57
59
f
.,
-2-2-
o
Table1.
Table
l.
Area
Number
Itlulber
o
Miles of
Beach
Begch
Number of
Diggers
. Diqqers
3,6
r 3.6
'3,292
13,292
2
2
6.2
6
,2
g,lg3
8,193
3
3
5.0
5.0
4
4
5
5
I
1
o
o:
Total
Total
r
Sport Harvest
Sport
Number of
of Diggers
Harvestof
RazorClams
and Number
Olggersby
of Razor
Clarnsand
Area from
frcm
by Area
ClatsopBeaches,
Beaches,
l4archto
Clatsop
Ilarch
to September,
September, 1974
1974
I
t
?
2
3
3
4
4
5
5
-----
Clams/
Digger
Trip
Diqqer Trip
Number of
Clams
ClarnsDug
Duq
Number of
Clams
Haslgd
ClamsWasted
9.9
9.9
132,264
L32,264
?,015
2,015
134,279
134,279
7.9
7.e
64,728
64,729
986
986
65,714
65,714
4,395
4,395
3.5
3.5
15,501
15,501
236
?36
15,737
t5,737
1.2
l,?
5,175
5 ,1 7 5
6.1
6
.1
31,790
3
1,790
484
484
32,274
32,274
2.0
2.0
13,159
13,158
7.8
7.8
102,807
102,807
1,565
1,565
104,372
104,37?
18.0
18.0
44,214
44,214
7.9
7.9
347,090
347,090
5,286
5,296
352,376
352,376
Harvest
Total
Total-_
,-
River to
Columbia River
Columbia
ParkRoad
to Fort
Fort Stevens
Road
StevensPark
Fort Stevens
Park Road
Fort
Stevens Park
Roadto
Road
SunsetBeach
BeachRoad
to Sunset
Sunset
Sunset Beach
BeachRoad
Roadto
GearhartBeach
Road
to Gearhart
BeachRoad
GearhartBeach
Gearhart
Necanicum River
River
BeachRoad
Roadto
to l,lecanicum
f{ecanlcum
Rlver to
Necanicum River
llead
to Tillamook
Tillanook Head
previousfive
The1974
yearsas
1974age
agecomposition
The
varied
of the
composition
from that
that of
the previous
five years
var{edlittle
llttle from
as
o
Flgure2.
seen
seenin
ln Figure
2.
Few0+
Few
year old
durlng the
0+ year
old clams
clamswere
dugduring
the spring
spring but
manywere
weredug
but many
were
being
belngdug
dugIn
in the
fall.
the fall.
o
late in
fall and
Mostof
in the
Most
the 1974
the fall
andwas
wasobserved
of the
1974set
set came
camelate
observed
on
on all
all areas.
areas. The
fall and
Thefall
fishery was
weather.
andwinter
hinderedby
by bad
badweather.
wlnter fishery
washindered
COMMERCIAL
FISHERY
COIVfi'IERCIAL
FISHERV
(32,330)were
A record
pounds(32,330)
produced
record low
in 1974.
A
low of
of 8,553
dugin
Areas1I and
8,553pounds
weredug
1974. Areas
and 22 produced
o
most
most of
the clams
of the
clamslanded.
landed.
RAZOR
RAZOR
CLPJ4
PRODUCTION SOUTH
SOUTH OF
OF TILLAI'OOK
TILLAMOOK HEAD
HEAD
PRODUCTION
CLAI4
o
permitted,
tlata
from nine
Data from
south
was
nlne beaches
beaches
T{llanpokHead
Head
wasobtained
obtainedasastime
tlne peniiitted,
southof
of Tillamook
productiveareas
pertinent catch
Table22 lists
data. The
Themost
mostproductive
areaswere
weFe
Table
and
llsts the
the beaches
beaches
andpertinent
catchdata.
(Coos
(Newportlrand
Bastendorff
Short
(Newport),
(Coos
Bay).
Short Sands
SandsBeach,
IndianBeach,
drdBastendorff
Bay).
Beach,Indian
Beach,South
SouthBeach
Beach
o
o
* 3-.
'1
o
60
1969
40 a
2C
or
I
[1
0
a
60
60
1.
0.7
I
zR
0.1
1970
1.
o
40
40
2A
20
0
-
a
i
r
0.4
i
60
60
0.1
1971
40
40
o
20
20
0.7
0
0.1
r:3ii
C
;:;e,'
60
60
o
1972
i'.:
40
4c
2A
20
-
o
0
1
1
C
0.3
0.3
-J
,
0.1
0.1
1973
60
6C
a
40
4(
a
2A
2(
0
o
1
1
0.1
..
i
60t*
t974
1974
6(
,
;i
;{ir.:+i:
r:i .
40l:
4(
l*]
j:.;:'r
ail
2A
2
o
0
,#.
I
4.2
0.2
-
0
0
l.
S
t234
1
2
3
4
5
5
Age
Age
Figure2.
2,
Figure
Percentage
PersonalUse
of Personal
Composition
RazorClams
Percentage Age
Age Composition
of
UseRazor
ClansFrom
FromClatsóp
Clatsdp
Beaches,
1969-74
Beaches,
1969-74
-,
---,-.-
.----.-..-
f
q
-4-
o
.
Table
Table 2.
?. Razor
Razor Clam
ClamCatch
Catch Data
Data from
from Beaches
BeachesSouth
Southof
of Tillamook
TillamookHeat
Heat1974
1974
of
. oof
Cl.ams/
Diggers
Clams
Digger
0
-
-
-0
0
Area
o
Sampled
lhrth iletW
North
Jetty
(Newport
ti{enport+}
o
South
South Beach
Beach
(Nenportl
(Newport)
117
117
Bastendorff
Bastendorff Beach
Eeach
(CoosBay)
(Coos
Bay)
o
o
I
1
N
-
Age
9 . 8 70.7
70.7
98
3
7.3
7.3
4
12.2
12.2
I
0
0
7,2
7.2
.5
.5
4.6
4
.6
9
9
9.0
9.0
0
0
55.6
55.6
22.2
22.2
22.2
22.2
-
-
-0
0
3 8 . 3 48.1
38.3
48.1
11.1
11.1
1.9
1.9
.6
,6
112
112
8
.0
8.0
0
0
L?,L
12.1
30.3
30.3
3.0
3.0
0
0
-
-
-
Indian
Indian Beach
Beach
14
l4
Cannon
Cannon Beach
Eeach
2
2
7
7
3
3.5
.5
ArchCape
Arch
Cape
1
I
6
6
6.0
6.0
0
0
l13
3
l5
15
1.2
t.?
-
2
2
29
29
ShortSands
Sands
Short
Beadh
Beach
in Pieñtage
2
1
839
839
SouthSlough
South
Slough Spit
Spit
(CoosBay)
(Coos
Bay)
Cove
Cove Beach
Beach
Coiiipóiitlon
-
65.5
14.5
1 4 . 5 65.5
3
4 . 4 159
34.4
15.9
54.6
54.6
-
00
-
?4.t
24.1
-
16.7
1 6 . 7 66.6
66.6
-
-
6.9
6.9
3.5
3.5
36.9
36,9 7
,9
7.9
0
00
167
1
6.7
0
0
0
-
00
0
0
o
RAZ0R
TAGGII'IG
1973 RAZOR
CLAN
TAGGING
1973
CLAvI
o
Three hundredfifty
(357)tags
seven(357)
Three
fifty seven
been
tagshave
have
beenrecovered
recoveredfrom
frsn the
the 3,200
3,?00clams
clamr
releaseddunlng
released
during the
thesunner
sununer
closure
closure in
in 1973.
Datais
is being
1973. Data
belng collected
collected to
to determine
determlnetag
tag
growthand mortallty
loss, growth
loss,
mortality rates,
rates, and
and wlll
will be
be compared
cornpared
with H1rschhorns
Hfrschhorn's
with
work
ln 1952.
mrk In
1g52.
3
for tags
Sampling
Sampling for
tags will
will continue
continuethrough
throughthe
the1975
season,
l97Eseason.
S
OREGONSTATE:UNIVERSITY,CORVALLIS
.
.
S
S
TO:
CENTER
RETURN
CENTC
tNFORMATION
PLEASE sCIENCE 97365
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