Distribution and abundance of the fished population of Loligo forbesi in UK waters: analysis of fishery data

Pierce, Graham J.; Boyle, Peter R.; Hastie, Lee C.; Shanks, Aileen M.

doi:10.1016/0165-7836(94)90104-x

Cited by 69 publications

(87 citation statements)

References 20 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A wide range of other methods has been used including roundhaul nets and lift nets in the fishery for Loligo opalescens off California. Small amounts of squid are also caught by a wide range of gear-types in Spanish and UK waters, including long lines, gill nets, drift nets, tangle nets and dredges (Guerra and Pérez-Gándaras, 1983;Guerra et al, 1994;Pierce et al, 1994a). Octopus are traditionally caught using pots, traps, and spears, as well as by trawling (Guerra and Pérez-Gándaras, 1983).…”

Section: Fishing Methods For Cephalopodsmentioning

confidence: 99%

“…The directed offshore fisheries for Illex illecebrosus in the Northwest Atlantic make use of bottom otter trawls and midwater trawls. In the UK, squid (Loligo forbesi) are landed principally as a by-catch of demersal trawling and seine net fishing (Arnold, 1979;Pierce et al, 1994a).…”

Section: Fishing Methods For Cephalopodsmentioning

confidence: 99%

“…This is probably more true of jigging than trawl fisheries. Much fishing for cephalopods in fact takes place on pre-breeding stocks, as is the case in the Falkland Islands fishery for Illex argentinus (Rosenberg et al, 1990) and the UK fishery for Loligo forbesi (Pierce et al, 1994a). In the Falklands Illex fishery, the size of squid caught is essentially limited by the size of squid migrating through the Falkland Islands Interim Conservation and Management Zone (FICZ), since both early growth and spawning take place elsewhere.…”

Section: Managementmentioning

confidence: 99%

See 2 more Smart Citations

Stock assessment methods used for cephalopod fisheries

1994

Self Cite

View full text Add to dashboard Cite

Cephalopods are of increasing importance as a fishery resource and many species are taken in directed and bycatch fisheries around the world. Owing to the short life-cycles and variable growth rates of most cephalopods, stocks may be highly volatile, both highly susceptible to recruitment overfishing and, conversely, capable of rapid recovery.Many species have protracted spawning seasons so that multiple microcohorts may be present in the population at any one time.Many assessment methods have been applied to cephalopod stocks, including stock recruitment relationships (e.g. the Japanese Todarodes pacificus stock), recruitment indices (e.g. Saharan Bank cephalopod stocks), swept-area biomass estimates (e.g.Northwest Atlantic stocks of the squids Loligo pealei and Illex illecebrosus), production models (e.g, Saharan Bank cephalopod stocks), cohort analysis (e.g. Illex argentinus in the Falkland islands), yield-per-recruit models (e.g. Northwest Atlantic squid stocks), length-based cohort analysis (e.g. Dosidicus gigas in the Gulf of California), and depletion estimates of stock size (e.g. Illex argentinus in the Falkland islands).Despite the widespread application of assessment methods, few stocks are rigorously managed, and the best example of a regulated fishery is the Falkland islands squid fishery. In contrast, although a number of assessment methods are used in the Japanese Todarodes fishery, management activities arc designed to ensure harmonious operation of the industry rather than maintain stock size. Fisheries for Loligo forbesi and Loligo vulgaris in the Northeast Atlantic arc mainly based on by-catches, although there is some directed fishing, particularly artisanal jig fishing in coastal waters. There is currently no assessment and minimal management for these species, and available management options are constrained by the nature of the fishery and the generally poor quality of available data.

show abstract

Section: Fishing Methods For Cephalopodsmentioning

confidence: 99%

Section: Fishing Methods For Cephalopodsmentioning

confidence: 99%

Section: Managementmentioning

confidence: 99%

See 1 more Smart Citation

Stock assessment methods used for cephalopod fisheries

1994

Self Cite

View full text Add to dashboard Cite

show abstract

“…These methods include, for example, those based on catch-per-unit effort ͑CPUE͒ and swept area of bottom trawl, with various applications to Loligo pealeii, 9 Loligo forbesi, 10 and Loligo gahi. 11 Known difficulties in assessing demersal fish by bottom trawl 12,13 also apply to squid.…”

Section: B Overview Of Acoustic Methods To Quantify Squidmentioning

confidence: 99%

Acoustic detection and quantification of benthic egg beds of the squid Loligo opalescens in Monterey Bay, California

Foote

Hanlon

Iampietro

et al. 2006

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The squid Loligo opalescens is a key species in the nearshore pelagic community of California, supporting the most valuable state marine fishery, yet the stock biomass is unknown. In southern Monterey Bay, extensive beds occur on a flat, sandy bottom, water depths 20-60 m, thus sidescan sonar is a prima-facie candidate for use in rapid, synoptic, and noninvasive surveying. The present study describes development of an acoustic method to detect, identify, and quantify squid egg beds by means of high-frequency sidescan-sonar imagery. Verification of the method has been undertaken with a video camera carried on a remotely operated vehicle. It has been established that sidescan sonar images can be used to predict the presence or absence of squid egg beds. The lower size limit of detectability of an isolated egg bed is about 0.5 m with a 400-kHz sidescan sonar used with a 50-m range when towed at 3 knots. It is possible to estimate the abundance of eggs in a region of interest by computing the cumulative area covered by the egg beds according to the sidescan sonar image. In a selected quadrat one arc second on each side, the estimated number of eggs was 36.5 million.

show abstract

“…Fishery statistics do not distinguish L. forbesi from L. vulgaris, since they are of similar appearance and equal commercial value. However, landings in Scottish waters can generally be assumed to be L. forbesi (PIERCE et al, 1994a), while those in the Mediterranean mainly consist of L. vulgaris . There is no estimation of the marketable proportion of L. forbesi in the landings of loliginids in Hellenic fisheries.…”

Section: Loligo Forbesi (Steenstrup 1856)mentioning

confidence: 99%

Molluscan species of minor commercial interest in Hellenic seas: Distribution, exploitation and conservation status

et al. 2008

View full text Add to dashboard Cite

Recognising the need for data gathering at taxon level besides the taxa of commercial interest and those listed as endangered in the Protocol of the Barcelona Convention, but still exploited by Man, the present study attempts to gather and review the available scientific information on molluscs of minor commercial importance in order to assist in the adequate management and protection of their populations. Forty one species (18 gastropods, 13 bivalves, and 10 cephalopods) of minor commercial interest are treated in the present work with details on their biogeographic distribution, exploitation and conservation status in Hellas. Apart from a few species (e.g., Pinna nobilis, Lithophaga lithophaga, Donacilla cornea), and these only at a local scale, there is no population assessment in Hellenic seas. The existing legislation for eleven of these species is not enforced in practice, and seems insufficient to guarantee their conservation. It is suggested that targeted collection data, networked nationally and internationally, should be promoted so this invaluable source of biodiversity information can be accessed for conservation and planning purposes.

show abstract

Distribution and abundance of the fished population of Loligo forbesi in UK waters: analysis of fishery data

Cited by 69 publications

References 20 publications

Stock assessment methods used for cephalopod fisheries

Stock assessment methods used for cephalopod fisheries

Acoustic detection and quantification of benthic egg beds of the squid Loligo opalescens in Monterey Bay, California

Molluscan species of minor commercial interest in Hellenic seas: Distribution, exploitation and conservation status

Contact Info

Product

Resources

About