ICES CM 1998/0:67
International Council for the Exploration of the Sea
Theme Session on Deep~water Fish and Fisheries
Research on deep-water species off the Portuguese continental coast
by
O. Moura. I. Figueiredo. P. Bordalo Machado and V. Henriques
Instituto de Investiga<;ao das Pescas e do Mar" IPIMAR
Av. Brasilia. 1400 LlSBOA
PORTUGAL
ABSTRACT
The tendency of fishing fleets to extend to deeper areas implies an increasing capture of deep-water
species. not yet fully utilised. Following this trend an effort has recently been put on species and their
ecosystems study. Deep-water species from the Portuguese continental slope have been routinely studied
under an IPIMAR project since 1994 and later integrated into an EU " FAIR Project. This paper focuses
on some aspects of Deep-water species: analysis of landing data. fisheries description and presentation of
research surveys results. Landing data are available from an independent Portuguese Administrative
office. Most representative landed species (either in total weight or price) were selected. Despite
teleosteans and selachians present the highest landing weight, crustaceans are. by far. the most valuable.
At Portugal Mainland there are three fisheries targeting deep-water species: a crustacean trawl that
develops on grounds off South and Southwest coasts and two with longline. one directed to Black
scabbardfish off the West Coast and the other directed to sharks off the West Galician coast. Research
surveys aim the study of biology. distribution and biomass estimates of deep-water species. Most
frequently captured species have different distribution patterns. Some present an extended distribution
area. which includes nearly the whole surveyed area: others. such as Bluemouth and Red and Scarlet
shrimps, have a more restrictive distribution. living usually close to deep-canyons. Species community
structure. alternative statistical approaches to species abundance estimation and biological parameters
crucial for population dynamics are now being further analysed. meanwhile some results have already
been published.
Key-words: Deep-water species. Fisheries. Landings, Portugal Mainland, Surveys.
\
1. Introduction
In recent years there is a global tendency of fishing fleets to extend their fishing areas
more deeply, mainly due to the overexploited status of the majority of traditionally
exploited resources. As a consequence several new species became frequent in the
catches. This recent input of new food proteins are not completely profited, since
consumers are not yet aware of them and some time lag is expected to occur just before
a routine consumption. In Portugal Mainland. Black scabbardfish (Aphanopus carbo) is
a good example of this, despite exploratory surveys have indicated its occurrence off the
Portuguese continental slope near Sesimbra port, in the year of 1980, it took almost
three years for the species to enter into the consumer market (Martins, pers. comm.).
Catches in deeper and far from the coast areas are, therefore, associated with an oodesirable
and oocontrolled throwaway of marine reSources from ecosystems, by all recognised, as
very fragile and quite different from the more coastal ones (Gordon et aI, 1995). As a
consequence most of European coootries are now developing research studies on deep-water
species, i.e .. species dwelling deeper than 400 m, according to the definition adopted by the
ICES Study Group on the Biology and Assessment of Deep-sea fisheries resources.
In Portugal Mainland several deep-water species have already some economic
importance, as a matter of fact. in 1996 their landings represented almost 10 % of the
total landings in weight. which corresponded to nearly 15 % of the income generation.
Despite most of the species landed are by-catches of the traditional coastal fisheries,
three deep-fisheries are already settled. from which two are with longline that began
their activity in the early 80's (Anon. 1997).
Research on deep-water species from the Portuguese continental slope started at
IPIMAR in 1994. Nevertheless, there is also previous data on these species that was
collected during IPIMAR research surveys, particularly those targeting Black
scabbard fish and Deep-water crustaceans. namely Norway lobster (Nephrops
l1orvegicus).
By the end of 1995. IPIMAR research actIVItIes on deep-water species have been
integrated into the EU - FAIR Project: Developing deep-water fisheries: data for their
assessment and for understanding their interaction with and impact on a fragile
environment.
This paper summarises the main information on deep-water species off Portuguese
continental slope that is available both from landings and research surveys. It also
presents some comments that involve aspects that should be further analysed in order to
get better insights for a correct assessment and management of these species.
2, Landings
An independent Portuguese Administrative office is responsible for the establishment
and updating of Databases on Portuguese fisheries.
ICES
CM
1998/0:67
• 2 -
Commercial fishing vessels are grouped into several categories. which are established
according to the fishing gear used or the main fishing area where the t1eet mostly
operate. Only three categories are here considered: trawl. purse-seine and polyvalents,
because the fishing vessels they include operate within the Portuguese EEZ.
Portuguese deep-water species landings are commonly assigned to polyvalent category
that means landings reserved to vessels that have permission to fish with several fishing
gears. namely, longline, traps, gillnets. etc.
Portuguese continental landings breakdown for the following selected taxa by month,
landing port and fishing category were obtained:
Teleosteans
Alfonsino (Bery·x spendens)
Alfonsinos (Bery'x spp.)
Black scabbard fish
Blackspot seabream (Page/l"s bogaraveo)
Bluemouth (Helicolenus dilC(dopterus)
European conger (Conger conger).
Forkbeards (Phycls spp.)
Greater forkbeard (PhyCIS blennOides)
Scorpionfishes (Scarpaenldae)
Silver scabbardfish (Lepidopus cQudalus)
Wreck fish (Po(\-prron amerICanus)
Selachians
Blackmouth cats hark (CI..1/eZls melaslOmus)
Gu!per shark (Centrophorus granulosus)
Kitefin shark (Dulaliasiicha)
Leafscale gulper shark (Cenlrophorus squamosus)
Portuguese dogfish (Centrosc:vmnus coelolepis)
Crustaceans
Red shrimp (Aristeus antennalUs)
Scarlet shrimp (Plesiopenaeus edwardsianus).
Official landing data are based on species identification done by fishermen at each
landing port. Thus some misidentifications can occur specially when dealing with
closely resembling species.
ICES
CM
1998/0:67
, J '
A deep-water shark identification program carried out, on a regular basis, by IPIMAR
technicians at Sesimbra port, took place from 1996 to 1997. During 1997 this Program
was once executed at Viana do Castelo. In both landing ports, no problems on species
identification were detected.
In terms of total weight landed, teleosteans and selachians are more important than
crustaceans. However the later. are, by far. the most valuable; in 1997, Red shrimp had
an average price per kg, of2376 PTE and Scarlet shrimp of 1713 PTE. Even thus at the
same year. Wreckfish priced 2247 PTE per Kg and Blackspot seabream 1300 PTE.
Deep-water species, landed at Portuguese continental fishing ports, are markedly
different in size. Regarding this fact. relative importance of 1997 landings, between the
species listed above, are analysed based on their yearly total weights and on their mean
commercial value per kg. Combining those two quantities the most important landed
specIes are:
I>' - Silver scabbardfish (total landings
~21.j3
millions of PTE);
2"d Black scabbardfish (total landings ~998 PTE):
yd European conger (total landings ::::955 PTE):
.j'" Wreck fish (total landings ~465 PTE):
5'" Blackspot seabream (total landings ~380 PTE):
6'" Red shrimp (total landings ~2T2 PTE):
T" Portuguese dogfish (total landings
~ 192 PTE);
8'" Leafscale gulper shark (total landings ~ 115 PTE):
9" Gulper shark (total landings ~ I 05 PTE):
10'" Alfonsino (total landings
~69
PTE):
II ," Bluemouth (total landings ~6 PTE):
12'" Blackmouth catshark (total landings ~ 1.6 PTE):
13'" Scarlet shrimp (total landings ~ 1.5 PTE):
14" Greater forkbeard (total landings ~.5).
Monthly total weight landings by fishing category, from 1992 to 1997 are presented in
Annex I, Figs. 1 to 5. For most species the landing data available do not show a clear
seasonal pattern of exploration.
More. than 90 'Yo. of the deep-water fishes are landed by the polyvalent fleet while almost
87 % of the deep-water crustaceans are landed by trawlers - the so called crustacean
trawl fishery from Algarve, later described.
ICES
CM
(998/0:67
- 4 -
Yearly total weights landed by port (Annex I, Fig, 6) are presented for each taxa in
Annex II, Tables 1 to 5.
In 1983, Viana do Castelo was the leading fishing port of Gulper shark; this year
corresponds to the beginning of the longline fishery that targeted this species. After
1994. landings at this port decreased and Peniche became the first landing port of the
species.
During the whole time period under consideration Sesimbra has been the main landing
port for Black scabbardfish. representing nearly 99 % of the species total landed weight.
This port is also the most important for associated species: Portuguese dogfish (96 %)
and Leafscale gulper shark (91 %). Almost 78 % of Silver scabbardfish landings are
assigned to this landing port.
In 1993, both Bluemouth and Scorpaenidae species were mainly landed in Sines, but
after 1994, Algarve landing ports were the most important ones. The main landing ports
of Kite fin shark varied along the years: from 1991 to 1995 Sines was the main landing
port. in 1996 it was Peniche and in 1997 it was Lagos. More than 50% of Blackmouth
catshark. other squaloid shark. is landed in Algarve. The catshark is greatly appreciated
illl this region. especially during Christmas time, when it can reach a price per kg of
about 4000 PTE.
For the remaining fishes Peniche is the major landing port.
Deep-water crustaceans captured by trawlers are mainly landed at Algarve landing
ports: 99.5 % of Red shrimp total landings are recorded at Vila Real de Santo Antonio
while Portimao is the most important landing port for Scarlet shrimp. Nevertheless the
polyvalent fraction of Red shrimp landings are assigned to Figueira da Foz .
3. Brief description of Portuguese deep-water fisheries
Despite the great variety of deep-water species landed at Portuguese fishing ports most
of them are by-catches of fisheries targeting other species. Three Portuguese fisheries
can be considered as deep-fisheries since they explore deeper areas where species
diversity are mainly composed of deep-water species. One was mainly developed on
grounds off the South and Southwest coasts, using trawl gears and directed to
crustaceans. The other two use longliners. one directed to Black scabbardfish off the
West Coast of Portugal and the other directed to sharks off the West Galician coast.
3. 1. Crustacean trawl fishery
The target species of this fishery are Rose Shrimp (Parapenaeus /ongirostris) and
Norway lobster, which is caught at depths ranging from 200 to 700 m.
The deepest grounds are attained when it is intended to target Norway lobster that, in
Portuguese waters, is mainly captured at depths ranging from 400 to 700 m.
ICES
CM
1998/0:67
-s.
The fishing fleet is made up of about thirty-five open deck stem trawlers (17-35 m)
most of which are about 20 years old or more. However. there are five modem trawlers
fitted with refrigerated holds that can undertake longer fishing trips than usual and thus
operating far from the coast.
Despite the fleet operates mostly off the South and Southwest coasts of Portugal
mainland there are also two trawlers registered at Cascais landing port, near Lisbon ..
\Vhen trawling hauls are performed on deeper grounds about 15 deep-water fishes and 2
deep-water crustaceans are caught as bycatch species and some, such as European
conger. Bluemouth, Greater fork-beard and Blackrnouth catshark, are also landed for
human consumption.
3. 2. Portuguese Black scabbardfish fishery
This fishery started only in 1983 at Sesimbra port and is only performed by longliners.
The fishing takes place in hard grounds along canyon slopes off Sesimbra, on depths
normally ranging from 800 to 1200 m, where the target species is more frequently
found. Associated with the capture of Black scabbardfish. certain deep-water sharks
important to the incomes generated by this fishing activity are also captured, namely
Lefscale gulper shark and Portuguese dogfish.
In 1996 the longline fleet was composed of 22 long line vessels, all registered at
Sesimbra harbour, that is also the base for their fishing activities. Fifteen of these
vessels are involved on this fishery all the year round and the other seven join them
seasonally,
The longline gears used are well adapted to the specific characteristics of the target
species. lishing grounds explored and depths achieved.
Consumers buy this species fresh and without any transformation. Sharks. on the
contrary. need processing on shore. being their livers used to oil production and later
exported. Recently, the meat of sharks has increasingly been processed for human
consumption. in form of fillets.
3. 3. Deepwater shark fishery
This longline fishery aims the capture of deep-water sharks and is based at Viana do
Castelo. It was initiated in 1983, and their fishing gears received some technological
influences from Sesimbra.
Longlines are set on grounds usually ranging from 800 to 1400 m deep but, if necessary,
they can be set in deeper grounds.
The bulk of the captures consist of only one species, the Gulper shark, so, fishing yields
attained are much conditioned on its abundance. However, other deep-water species are
caught in smaller quantities, such as Leafscale gulper shark, Portuguese dogfish and
also several bony fishes.
ICES
CM
199810:67
- 6 -
In 1992 the fleet landing Gulper shark in Viana do Castelo were composed of 6 open
deck longliners (mean length of 18.6 m) fishing during all the year. Since then, the catch
rates have decreased steadily, threatening the continuity of this fishery. In 1996 there
have been only one longliner engaged in it at full time.
The gear setting is made at down and is hauled about three hours later by the end that
was set first. This last operation takes 11 to 14 hours and occurs during daylight.
Fishing trips usually last five days during which are performed three gear settings.
Common bait is Sardine (Sardina pilchardus) but either Atlantic mackerel (Scomber
scombrus) or Chub mackerel (Scomber japonicus) can be used.
During the first years of this fishery only the shark livers had commercial value. Livers
continue to be important to the viability of this fishery, however, the fish caught is
actually landed and also sold for filleting. To increase the value of landed fish,
fisherman process now part of the catches on board.
4. Portuguese research surveys
IPIMAR research surveys held on board of the RIV "NORUEGA from 1990 to 1992
aimed to study the biology, distribution and abundance of Deep-water crustaceans,
namely, Norway lobster, off the Portuguese south and southern west coasts. During
these surveys several deep-water species were also caught and biological information
collected. Based on these data a report on specific geographical and bathymetric
distri bution, as well as abundance estimates in weight or biomass estimates by species
were accomplished by Figueiredo et al. (1994)
Since 1994, deep-water species research surveys have been performed along the
Portuguese continental slope. Their main objectives are the study of biology, occurrence
and distribution of deep-water species as well as biomass estimates by species. Three
summer research surveys were done by RIV "Noruega" in 1994,1995 and 1997,
covering depths ranging from 200 m to 800 m. except for the last one, that only
explored areas more than 400 m deep.
A stratified sampling program was adopted for these surveys (Figueiredo 1., 1995). In
each stratum two hauls, at least, are randomly performed using a special trawl gear
designed for the capture of crustaceans with a cod-end of 20 mm and an horizontal
opening of 30 m. Each haul lasts about 1 hour and the vessel is kept at a constant speed
of around 3 knots. Occasionally, with rough grounds, a Norwegian Campel Trawl gear
(ref. FGA V005) with a cod-end mesh size also with 20 mm is used.
During these research surveys, many species are caught. According to their relative
importance the following species were selected for implementation of studies on
distribution, abundance and biology:
Teleostens
Bluemouth
ICES
CM
1998/0:67
- 7 -
European conger
Greater forkbeard
Mediterranean redfish (Hoplastethus mediterrqneus)
Mediterranean longsnout grenadier (Trachyrhynchus trachyrhynchus)
Roughtip grenadier (Nezumia sclerorhynchus)
HolDeephal,
Rabbitfish (Chimaera monstrosa)
Seleaehians
Blaekmouth catshark
Birdbeak dogfish (Deania calcea)
Gulper shark
Kitefin shark
Crustaceans
Giant red shrimp (Aristeomorpha/oliacea)
Goldenshrimp (Plesionika martial;
Red shrimp
Scarlet shrimp
Mediterranean geryon (Geryon longipes)
For each of these species biological data on individual length, total weight, sex and
maturity stages are obtained based on samples collected by simple random sampling.
Supplementary samples for extraction of otoliths, vertebrae and dorsal spines are also
collected.
Density (kg by square nautical mile) and biomass (t) estimates were determined using a
stratified sampling estimator (Cochran, 1977), for Alentejo and Algarve regions
(Figueiredo el aI, 1994).
A multivariate method - cluster analysis - was applied to the study of composition and
distribution of deepwater species off the Portuguese south coast (Moura el ai., 1995).
Several results based on IPlMAR ongoing studies on deep-water species are
summarised below.
Greater fork-beard and Roughtip grenadier are commonly caught, being evenly
distributed along the slope. Bluemouth presents a patchy distribution, being more
frequent at depths lower than 800 m.
ICES
CM
199810:67
- 8 .
It is worth to mention that Bluemouth has been referred by Albuquerque (1956), as
common in Madeira, but rare off the Portuguese continental coast. However during
these surveys it was noticed that the species was abundant in grounds off the south coast
deeper than 400 m, mostly around submarine mountains in the neighbourhood of deep
canyons (Figueiredo MJ .. 1995).
The abundance and occurrence of European conger presents an increasing tendency
towards the south. A direct relationship between total length of this species and depth is
observed; smaller individuals tend to occur mostly at lower depths.
Mediterranean redfish and Mediterranean longsnout grenadier are more abundant at
Alentejo region.
Rabbitfish despite being more frequent at Alentejo and Algarve reglOns. at depths
greater than 400m, is absent offing Cape S.Vicente.
Blackmouth catshark is the most frequent captured selachian species; the highest mean
yield estimates are attained at depths ranging from 600 till 800 m.
The occurrence of Birdbeak dogtish is scarce at Algarve region. This species is more
frequent at the occidental slope, particularly at depths ranging from 800 to 900 m.
The occurrences of Gulper shark and Kitefin shark are very low, the former is only
captured on few strata off the Algarve coast.
Golden shrimp is a common crustacean species. presenting a regular distribution along
the whole surveyed area.
Red shrimp is relatively common along the Portuguese continental slope but presents a
very irregular distribution pattern. Both Giant red shrimp and Scarlet shrimp are
infrequent species.
Mediterranean geryon distributes preferentially at depths greater than 600 m. being
more common along the occidental slope. namely. at the northern region.
Most of biological studies already undertaken tocussed the adaptation and development of
ageing techniques necessary tor the identification and enhancement of growth bands.
Growth structures such as otoliths in bony tishes (Moreira, 1998) and vertebrae (Correia and
Figueiredo, 1997) and dorsal spines (Bordalo Machado and Figueiredo, 1998) were used
with success.
5. Final comments
Most of deep-water species landings are by-catches of fisheries targeting other species
that live close to fhe coast but whose distribution area may extend deeper.
ICES
CM
1998/0:67
- 9 -
The capture of those deep-water species may be thus considered as a direct consequence
of a recent global trend of the coastal fishing fleet to move to deeper and unexplored
areas where the traditional overexploited species may be present.
A close inspection of the most important deep-water species landed in Portuguese
continental landing ports with those commonly captured during IPIMAR research
surveys show a different composition pattern between both. For instance deep-water
sharks, such as Portuguese dogtish and Gulper shark are not so frequent on research
surveys as they are on landings. Among several factors that can contribute for this
discrepancy, it is worth to mention two major ones:
- fishing gear - research surveys use only a bottom trawl while landings are
mainly from the polyvalent fleet that can operate with more than one fishing gear;
- tishing area - the area covered by the bottom trawl used during IPIMAR
research surveys is restricted to the trawlable one and fishing hauls can not extent to
regions deeper than 900 m, on the contrary the commercial fleet can operate over a more
extended and deeper area.
Biological studies, such as growth and reproduction, are in an initial phase of
development. Different ageing techniques have been developed with success and
macroscopic maturity scales have been also used. nevertheless several limitations,
mainly related with spatio and temporal data availability, may cause in the future an
undesirable deceleration of biological studies. A continued collection of biological data
is fundamental for determining important population characteristics, such as, time and
area of spawning, fecundiiy. growth pa.rameters and feeding habitats.
Acknowledgements:
This research program was supported bv IPIMAR and the E.U. FAIR project 95-0655 "
Developing deep-water fisheries: data for rheir assessment and for understanding their
interaction ),t'ilh and impact on (1 fragile environment".
6. References
Albuquerque, R., 1956. Peixes de Portugal e Ilhas: Adjacentes. Chaves para. a sua
determinayiio. PorI. ACla BioI.. serie B, 5.XVI + 1167 p., 445 tig.
Anon, 1997. Second interim Report of the EC FAIR Project CT 95-0655. Developing
deep-water fisheries: data for their assessment and for understanding their
interaction with and impact on a fragile environment, Doc 32.
Bordalo Machado, P. and Figueiredo, I., 1998. A new ageing technique for Birdbeak:
dogfish (Deania ca/cea. Lowe, 1839) dorsal spines. Book of Abstracts of
the 2'd international Symposium on Fish Otolith Research and Application
Bergen, Norway, 20-25June, Contribution no. 67.
ICES
CM
1998/0:67
- 1 0 -
Cochran, W.O., 1977. Sampling Techniques. John Wiley & Sons, New York, 428 pp.
Correia., J.P. and Figueiredo,!.. 1997. A modified calcification tecnhique for enhancing
growth bands in deep-coned vertebrae of elasmobranchs. Environmental
Biology of Fishes. 50:225-230.
Figueiredo, M. J.; Moura, O. and Figueiredo. I., 1994. Peixes de profundidade da costa
continental portuguesa. Relat. Cient. Tee. Inst. Port. Invest. Marit .. 3, 85 p.
Figueiredo. I.; Figueiredo. M. 1. and Moura. 0., 1995. Distribution, abundance and size
composition of Blackmouth cattlsh (Galeus melastomus) and Small spotted
dogfish (Seyliorhinus eanieulal on the slope of the Portuguese south and
southern west coasts. ICES CM 1995/G:9, 38 p.
Figueiredo. M.J .. ; Figueiredo. I. and Moura. 0 .. 1995. Distribution, abundance and size
composition of Blackbelly rosefish (Helycolenus dactylopterus) and
Mediterranean redfish (Hoploslelhus mediterraneus) on the slope of the
Portuguese south and southern west coasts. ICES CM 1995/0:10,38 p.
Gordon. J.D:M .. N.R. Merret and R. L. Haedrich, 1994. Environmental and biological
aspects of slope-dwelling fishes of the north Atlantic in A.G. Hopper (ed)
Deep- Water Fisheries of the North Atlantic Oceanic slope, 1-26, Kluwer
Academic Publisher. Netherdlands.
\loreira. A.. 1998. Deterrnina9ao de idades em Cantarilho. I Congresso de Estudantes
de Biologia, Universidade de Evora. 12-13 Junho 1998.
\loura. 0: Figueiredo. I. and Figueiredo. M. 1.. 1995. A first approach to the definition
of deep-sea species communities from the southern Portuguese coast. ICES
CM 1995/0:14 Ref.H.
ICES
CM
1998/0:67
• 1 1 •
Annex I
ICES
CM
1998/0:67
III Polyvalent
~'Inl
I
I _
41XX~1
v
I
Purse-seine
I
,
I"""
_Trawl
10, .. "
JSIKKI
liKKKI
~
nlKKI
J
21KKKI
I
,
I
II""
I
II
i
, mPolyvalent
I_
Purse-seine
aTrawl
~,,"
I"""
I5<KKI
ooot
SIKK"
.1 I
A.
•
~L""
A
21!.1
Alfonsino
Alfonsinos
III Polyvalent
;
71XKUI
o Polyvalent
I • Purse-seine
(~KKKKI
I_TraWl
• Purse-sein-e
I
I
h ....
I
l),,"
SIXKKXI
.
41KKKKI
"
• Trawl
1,",,,
llKKKKI
;!,XXXI
ISIKKI
HK •• )
2l1CKIOU
SIXKI
,,=
Mg,,,hIY<"-t
M"nIJJy.'~r
Blackspot seabream
Black scabbardfish
Figure I - Monthly landings by fishing fleet category of Alronsino, Alfonsinos, Black scabbard fish and Blackspot sea bream
( 1992-1997)
ICES
CM
1998/0:67
1m Polyvalent
ill Polyvalent
a Trawl
2, •• ,
• Purse-seine
I
a Trawl
I
10 .. ,",
• Purse-seine
,,,,,.' r
I~I"'
I",.,
'''"OJ ,,
141K'
!""JL'
I2IKI
kl
"«
UXXI
~oK''''
I"""
81X'
.....
~
"
41~)
}I ••• ,
,
..
Montbf\'< ••
M"hlhlY~...
'"'
European conger
Bluemouth
ill Polyvalent
SIKXIO
. • Purse-seine
45<U)
I a Trawl
,.",
III Polyvalent
• Purse-seine
~
41XKKI
....
a Trawl
15<U)
Ij'"
,IXU)
"
I""
SUI
'"'
Mon''''''' ....
Mon'bf\'u.
Greater forkbeard
Forkbeards
Figure 2 - Monthly landings by fishing fleet category of Bluemouth, European conger, Forkbeards and Greater forkbeard
(1992-1997)
ICES
CM
199810:67'
III Polyvalent
I
~(KXXI
• Purse-seine I
UIXXI
II Trawl
III Polyvalent
• Purse-seine
!
lIXK~1
2.IIXX'
"
MlHJlhiVrar
M"nlh1\'."r
Silver scabbardfish
Scorpionfishes
ill Polyvalent
IlII Polyvalent
I!(~K'
• Purse-seine
• Purse-seine
11K ...
• Trawl
XI".,
"
l'ln
1'J'J.l
1'.>')4
l'I'!'i
I~%
MunlhlY •• ,
Wreckfish
Blackmouth catshark
Figure 3 - Monthly landings by fishing fleet category of Scorpion fishes, Silver scabbard fish, Wreckfish and Blackmouth catshark
(1992-1997)
ICES
CM
199810:67
1'1'17
fUXX~J
IllI Polyvalenl
• Purse-seine
7IXk~'
.Trawl
'lIkXXI
IdKXMJ
$IXX)l1
'" ....,
-j
-
,
'~.: II
I
,,,,,
I
I
I!il Polyvalent
I_
1
1
Purse-seine
, _Trawl
I
Kf, Il'"
A
,,,,,
SIX)
M""d""."t
MunlhIY."r
Kitefin shark
Gulper shark
III Polyvalent
16O!XKI
14(XX~1
I ill Polyvalent
!
r
_Trawl
""'" 11
• Purse-seine
I
llikKKI
I • Purse-seine
1
I _Trawl
IUlUK)
..:«
II!kHI
(~X.~I
,.".:.
,.,
MonthlY.".
M"nll.rv.".
Portuguese dogfish
Leafscale gulper shark
Figure 4 - Monthly landings by fishing fleet category of Gulper shark, Kitefin shark, Leafscale gulper shark and Portuguese dogfish
( 1992-1997)
ICES
CM
1998/0:67
.'
• Trawl
2'11XKI
(I
I
• Trawl
.
• Purse-seine
•
".11
IIllPolyvalent
I!llPolyvalent
l\~XXI
.
L~(XX)
' '""'II
5(~~1~
~
........
...............
'",
...
II"
M"nlhil "N,
M""'W'«d
Red shrimp
Scarlet shrimp
Figure 5 - Monthly landings by fishing fleet category of Red shrimp and Scarlet shrimp
( 1992-1997)
ICES
CM
1998/0:67
P urse-selne
.
42°r-"nTnnTr~TnTr~Tn~~Tr~~--~
00'
N
30'
41°
00'
30'
40°
00'
30'
39°
00'
30'
3S0
00'
30'
37"
00'
30'
36"
00'
100 00W
30'
goOO'
30'
S'OO'
30'
Figure 6 - Map of fishing landing ports along the Portuguese continental coast.
ICES
CM
1998/0:67
Annex II
ICES
CM
1998/0:67
Species
Landing port
Viana do Castelo
P6voa do Varzim
Matosinhos
Aveiro
Figueira da Foz
Nazare
Peniche
Ericeira
1992
1993
10
2
Table I - Yearly Species Landings (in tons) by tishing port (1992-1997)
Alfonsino
Alfonsinos
1993
1994
1995
1996
1997
1992
1994
1995
5970
n
2()XX
559
7·W2
22.tO
3237
12
11)
X
174
2705
3162
5847
555~
1637
8755
23955
23327
1825~
35104
44349
28232
Cascais
Sesimbra
Setuhal
Sines
Lagos
PortimAo
Olhiio
2950
1044
156522
346
25336
2114
38064
651
51682
215
()29
372
Tavira
V.Real S. Ant.
Docapesca
TOTAL
Species
Landing port
Viana do Castelo
P6voa do Varzim
Matosinhos
Avciro
Figueira da Foz
Nazare
Peniche
Ericeira
191
4196
1652
29104
1992
427
13
1993
452
655
79
9893
370
1855
5701
61
882
1
124
7522
567
4548
7726
183
2993
921
5970
15\3
2956
14305
49
3704
11)
42531
272
72287
7
87545
t993
1167
16563~
65612
76569
Blackscabbardfish
1994
1995
3420226
15
841
2-l1
677
720
t996
7
11)0
61
1997
168
1992
753
430
24127
Y6
149
26709
297
134832
12906
215946
3322847
102
779280
107982
2427
4
21228
4
47408
13530
1488274
376245
46
66Y47
75895
18942
3350193
130271
1262565
7
139639
2396612
1996
1997
25 1)1)
5081
1622
9126
11
1802
7695
116
8119
676
5792
13649
4613
133
6338
1504
5388
10864
370
18
3605
3065
1044
9370
8
8814
4155
24~7
~2
29
34176
7~')57
42341
Silver scabbard fish
56
24930
621
1528
74
5013
113
3897
2300
4389045
4512552
3420158
42604(1)
3682493
0
3
934
536
551
2
209
129
411
57
1994
470706
8318
11391
518
509
8827
235181
1995
3242
1444
6184
78
2
2716
218585
1996
720
5
47
200
20
548
108720
470091
149373
130259
11282
11423
15685
50
86
159
1523857
5260472
17597
65126
54506
12681
26546
\09\042
350
3068
1581
12308
18338
327
2685
5672190
448
11
1237405
1997
328
1
83
76669
Cascais
Sesimbra
Setuhal
Sines
Lagos
Portimilo
OIbilo
13
159
Tavira
V.Real S. Ant.
Docapesca
TOTAL
8833
4423462
2778
4518599
6847923
5782
4271722
3685612
1633185
94
6718
3191
10
330
2035
1722644
Species
.Landing port
Viana do Castelo
Povoa do Varzim
Matosinhos
Avciro
Figueira da Foz
Nazare
Penie"e
1992
1993
12
5772
3708
5971
77189
388
7979
2562
25284
98705
367
11683
914
3803
11123
5949
32703
51
596
6256
166097
865
6135
8774
2189
23853
7394
18141
Table 2 - Yearly Species Landings (in tons) by fishing port (1992-1997)
Scorpionfishes
Bluemouth
1994
1995
1996
1997
1992
1993
1995
1994
598
31111
612
5631
2351
13455
166659
1233
8638
123 174
1344
248·1
6805
100849
501
1360
1673
6644
117724
33UI
3287
1119
5305
249117
98511
35671
147
3396
21790
1019
3180
14739
8.t75
437K8
6745
11547
391
21170
8971
15680
9325
3589
4856
555
1812
3696
3276
5044
2727
275008
555
232507
6140
172962
4078
154807
1996
156767
100492
265935
1997
131838
89356
173888
2409
50507
67479
795167
13858
10872
106370
18196
165252
133138
35611
41815
4571
5600
7104
1853033
2221
-,
1996
1997
34
1885
8902
54
5
88
1890
8902
187
2034
5669
498
70
23288
148690
Wreckfish
1994
1995
4570
12882
1220
2493
16440
7921
79
239
40
38
10471
19811
219662
184711
1996
1434
1824
2972
13
20
4169
129119
1997
190
959
2264
82
104
5170
116223
919
20413
4141
18138
65595
1183
45733
27
123
1425
338133
2051
12546
2323
27577
63170
615
38228
81
42
87
418283
2564
43008
3509
22646
67115
192
23869
7
87
132
372138
580
15642
1855
9695
41016
422
4561
3
87
121
213533
244
7022
1486
3585
23346
377
2150
17
Ericeira
Caseais
Sesimbra
Selubal
Sines
Lagos
Portim§o
Olhilo
Tavir.
V.Real S. Ant.
Doeapesea
TOTAL
Species
Landing port
Viana do Castelo
Pc\voa do Varzim
Matosinhos
Avciro
Figueira da Foz
Nazare
Peniehe
Ericeira
Cascais
Sesimbr.
Selubal
Sines
Lagos
Portim§o
Olhio
Tavira
V.Real S. Ant.
Docapesca
TOTAL
,
.
1992
136847
85033
269016
36320
69905
62494
454388
8609
21709
122143
5178
182772
89303
37712
101760
10554
5592
5650
1704985
442
9139
211849
----
1993
145165
127519
267410
51548
72067
123979
707992
6462
24758
104248
15654
217569
133290
57098
92686
10427
22871
6979
2187720
European
1994
258223
170642
436709
33331
99408
166541
1160904
10115
29875
95414
15550
209450
174426
50484
152898
9715
22004
5125
3100811
conger
1995
164226
120501
417324
27591
99692
101380
983268
5347
15981
181662
27609
214470
142765
44822
96698
9826
13530
6285
2672978
16949
87050
84876
923966
10905
14460
143771
35202
188175
121807
53176
50988
12619
24139
5588
2296867
27
901
20
I
9
3
209
587
41
WOO
814
1992
109
1339
4973
164
57
10162
83110
16
597
17372
1232
16842
76524
2116
51794
36
38
1469
267950
1993
28
-----
61
186
163449
Species
Landing port
Viana do Castelo
Povoa do VarLim
1992
1482
1875
17122
24
1256
7245
111065
993
3890
27905
827
38305
41187
7784
4976
1584
723
180
268424
Mutosinhos
Avciro
Figueira d. Foz
Nazare
Peniche
Ericeira
Cascais
Sesimbra
Setubal
Sines
Lagos
Portimao
Olhiio
TaviraV.Real S. Ant.
Docapesca
TOTAL
Species
Landing port
Viana do Castelo
Povoa do Varzim
Matosinhos
Avciro
Figueira da Foz
Nazare
Peniche
Ericeira
Cascais
Sesimbra
Setubal
Sines
Lagos
. Portimiio
Olhari
Tavira
V.Real S. Ant
Docapesca
TOTAL
-------
L
1993
3939
I 75()9
4021
10606
501
591
19524
158295
535
4128
13458
2263
38016
48569
6029
5798
1315
834
63U
326046
(,J
752
14206
18N28
706
5442
17188
4054
40422
474U2
1992
1993
9309
3680
12219
7137
3103
7546
32092
57
706
12151
1470
5121
21444
7212
3476
25593
15722
37788
9171
2518
24899
29520
44
36
4891
2807
2783
15730
11332
7042
12
39
2327
192255
4520
131245
Table J Y"afly Sp"ci", Landings (in Ions) by lishing pori (1992-1997)
Fnrkheanh
Greater rorkbeard
1994
1995
1,992
1.996
1997
1993
1994
1995
18318
521 J
2487
501
1-22J5
171
10190
·1158
:~).'d
·I-X:"X
19.22
25
,1()
I (l·IS
I"
6XH
10085
IX.l7
')751
12J.ftl6
96.16J
466
870
4515
28924
1378
46712
37097
104111l
5738
2118
1751
498
26·1214
5136
456911
3426
33587
42228
472
1111121
'0008
195
1357
389
377543
2%182
6682
15141
538
609
Blackspotseabream
1994
1995
18945
7455
9189
4836
32325
29705
2479
16~O
3228
5184
13874
18903
32733
102653
122
116
IU4
436
3884
14308
688
1241
3445
3352
17598
6301
3757
2455
11295
3153
1996
1997
·18
8476
981711
260M
2857
311110
107U
50262
3
49226
7384
5639
29
1139
613
265768
8053
1526
1140
74
8127
38
1564
18
1206
4
1822
507
1825
511
.
.
1996
1997
1992
1993
11685
5274
44898
5327
153118
10813
70785
20
51
14308
451
3363
6623
12630
1636
12661
4731
24872
2281
3769
11523
72U7U
51
91
24042
1340
3642
18119
803
927
97629
86743
16179
II
15
2944
183878
13 I
13 I
Portuguese dogfish
1994
1995
1996
10299
6832
1838
...
1997
16304
I
58
13507
8461
12107
7819
8932
9970
577214
484807
52n91
762915
740678
13
8U852U
2628
4828
2835
3921
3715
619
3496
556176
783949
756895
841138
20
2591
1373
690961
597564
II
I
555
154221
--
146
1584
203518
5285
208467
- -
-----
-
--
.'
"
,
Species
Landing port
Viana do Castelo
P6voa do Varzim
Matosinhos
1992
397
Table 4- Yearly Species Landings (in tons) by tishing port (1992-1997)
Blackmo"th catshark
Kitefin shark
1993
1994
1995
1996
1997
1992
1993
1994
1995
1996
,1
6
1407
1509
19
110
1054
1016
2
2159
436
91
67
105
4303
290
L)1)
.,
1997
Aveiro
46
Figueira d. Foz
Nazare
Peniche
1415
2136
6775
26()6
J 132
315
39
12945
1315
3701
311
4
15667
1801
12407
16532
1235
8650
11860
5298
13516
7813
1280
16303
143
34
1042
34922
49
1738
28959
1775
6lJ3
16J
3].17
JlJH
4
2073
1092 '
Ericeira
Cascais
9
7
Sesimbra
Setubal
Sines
Lagos
Portimao
OIhao
Tavir.
V.Real S. Ant.
Docapesca
TOTAL
Species
Landing port
Viana do Castelo
Pavoa do Varzim
Matosinhos
Avciro
Figueira da Foz
Nazare
Peniche
Ericeira
Cascais
Sesimbra
Setubal
Sines
Lagos
Portimao
0lh50
Tavira
V.Real S. Ant.
Docapesca
TOTAL
- --
7659
2318
4162
19
22
16054
46
20143
36964
29481
Leafscale gulper shark
1994
1995
532751
4864
6222
5011
71
1992
1743
14110
12370
1993
lOS
29956
3178
1996
1997
17224
5752
787
14
10272
1833
26
8416
6784
10533
2667
4839
2230
4444
1790
372079
392
815
6108
280919
460
1089
6138
4
530823
548
1456
18084
511904
306
1413
15602
1353
505
1446
874
421089
62
47
337686
5446
203
9166
216
6842
1284
22
874
49
1730
55
13
4122
124
134
1466
15
128
10828
7420
10994
1992
467909
676
III
60
11024
Gulper shark
1994
1995
41040
31398
23
5206
1993
402712
2826
1996
13016
350
4
3634
1997
40122
373
I
I
32
--
14
2176
1390
609
162830
17
380466
123
969
5351
14
342677
6
13859
403
954
III
831
1347
41
1108186
543501
8
410796
356053
20
15341
1538
18906
113
273
78
682157
6327
108514
1167
92292
23
1465
114451
3
735
70656
891
102131
12710
198
375
7377
19
13832
14196
24
54
17309
350
11507
11459
9
33
17526
141
16129
22
16916
19
138
13412
825
5443
17
22951
37
124
12735
163
9108
225
331
98
183498
192730
101
7
121648
933
5
189590
555148-
-
--
I
I
Species
Landing port
Viana do Castelo
Pc\voa do Varzim
Malosinhos
Avciro
Figueira da Foz
Nazare
Peniche
Ericeira
CascaisSesimbra
Sehibal
Sines
Laglls
Porlimilo
Olhilo .
Tavira
V.Real S. Ant.
Docapesca
TOTAL
1992
1993
Table 5 - Yearly Species Landings (in Ions) bylishing port (1992-1997)
Red shrimp
Scarlct shrimp
1995
1996
1997
1993
1994
1992
1994
1995
1996
1997
177
552
I.
4
13086
5239
9029
111600
6731
13317
15
350
19
16
89
3
1046
240
5
306
1887
I
139
435
27663
28220
4051J
60
9
130
99
139
24274
62934
76659
10200 I
5
79676
87553
118106
.
44081
34274
2295
33379
87
324
3
532
1199
1224
216
363
430
535
1199
1227
4
397
915
,)
\