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Catching Octopus vulgaris with traps in the Azores: first trials employing Japanese baited pots in the Atlantic

Published online by Cambridge University Press:  03 June 2009

Gilberto P. Carreira  and
João M. Gonçalves
Gilberto P. Carreira*
Affiliation:
Departamento de Oceanografia e Pescas da Universidade dos Açores, Cais de Sta Cruz, PT9901-862 Horta, Açores, Portugal
João M. Gonçalves
Affiliation:
Departamento de Oceanografia e Pescas da Universidade dos Açores, Cais de Sta Cruz, PT9901-862 Horta, Açores, Portugal
*
Correspondence should be addressed to: Gilberto P. Carreira, Departamento de Oceanografia e Pescas da Universidade dos, Açores, Cais de Sta Cruz, PT9901-862 Horta, Açores, Portugal email: [email protected]
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Abstract

Trials with a new kind of fishing trap, the Japanese baited pot (JBP), were performed in the Atlantic for the first time, covering three target depths, 25 m, 75 m and 125 m in the Azores. The JBPs were proved to be efficient and highly specific to octopus. An average catch per unit of effort (CPUE) of 0.22 octopuses/trap/hour*100 was attained, and the highest mean value was reached at the shallowest depths (28 m ±4), with 0.33 octopuses/trap/hour*100. A decreasing CPUE with depth was observed, in accordance with what has been found for this species elsewhere. Considering the management measures enforced in the European Union for this species (minimum allowable catch size of 750 g), we found that ~25% of the caught octopuses by JBP were composed of marketable octopuses. The success of the JBP for Octopus vulgaris in the Azores and its specificity suggests that these traps may be useful for further stock assessment studies.

Keywords

cephalopodsoctopusJapanese baited potsAzoresfishery experiment
Type
Research Article
Information
Marine Biodiversity Records , Volume 2 , January 2009 , e114
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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References

REFERENCES

Aedo, G. and Arancibia, H. (2003) Estimating areas and effective fishing areas for Chilean lemon crab (Cancer porteri) using traps. Fisheries Research 60, 267–272.CrossRefGoogle Scholar
Anon (1980a) Octopus survey. Fins 13, 21–22.Google Scholar
Anon (1980b) A possible octopus fishing industry in Western Australia. Fins 13, 4–6.Google Scholar
Anon (1986a) Annual squid (and/or cuttlefish) consumption is 1.8 kg per person. Japan's squid fishery. Amazingly wide use of squid. Squid can be useful worldwide. Opening the way for the new age of squid fishing. Research on Australian octopus resources. Yamaha Fishery Journal Composite 3, 23–30.Google Scholar
Anon (1986b) Pot fishing in Japan. Simpler and more effective modernized methods. General features of modernized pot fishing gear. Shrimp pot fishing. Conger eel pot fishing. Pot fishing for assorted fishes. Octopus pot fishing. Gazami crab pot fishing. Yamaha Fishery Journal Composite 27, 225–232.Google Scholar
Anon (1986c) Three questions on octopus. Coastal octopus fisheries rich in variety. Processing for food. An attempt to develop small-scale commercial fishery—a development project of octopus fishing grounds in the west coast of Australia. Increasing dependence on import. Types of coastal fishermen catching octopus in Japan. Yamaha Fishery Journal Composite 13, 107–114.Google Scholar
Carreira, G.P. (2000) Octopus vulgaris Cuvier, 1797 (Mollusca: Cephalopoda) dos Açores: biologia populacional e exploração. Msc thesis. ICBAS, Universidade do Porto, Porto, Portugal.Google Scholar
Cunha, M.M. and Moreno, A. (1994) Octopus vulgaris: its potential on the Portuguese coast. International Council for the Exploration of the Sea (CM Papers and Reports), CM 1994/k: 33, 19 pp.Google Scholar
Defeo, O., Little, V. and Barea, L. (1991) Stock assessment of the deep-sea red crab Chaceon notialis in the Argentinian–Uruguayan common fishing zone. Fisheries Research 11, 23–39.CrossRefGoogle Scholar
Eggers, D.M., Rickard, N.A., Chapman, D.G. and Whitney, R.R. (1982) A methodology for estimating area fished for baited hooks and traps along a ground line. Journal of Fisheries and Aquatic Sciences 39, 448–453.CrossRefGoogle Scholar
Gonçalves, J.M. (1991) Biology and exploitation of Octopus vulgaris Cuvier, 1797 (Mollusca: Cephalopoda) in the Azores. International Council for the Exploration of the Sea (CM Papers and Reports), CM 1991/k: 11.Google Scholar
Gonçalves, J.M. (1993) Octopus vulgaris Cuvier, 1797 (polvo-comum): sinopse da biologia e exploração. MSc thesis. Universidade dos Açores, UA, Horta, Portugal.Google Scholar
Guerra, A. (1981) The fishery of Octopus vulgaris off Finisterre (north-west of Spain). International Council for the Exploration of the Sea (CM Papers and Reports), CM 1981/k: 4, 13 pp.Google Scholar
Guerra, A. (1997) Octopus vulgaris: review of the world fishery. In Lang, M.A. et al. (eds) Proceedings of the workshop on the fishery and market potential of octopus in California. Washington: Smithsonian Institution's Office of the Provost—Scientific Diving Program, pp. 91–97.Google Scholar
Hérnandez-Garcia, V., Hérnandez-López, J.L. and Castro, J.J. (1998) The octopus (Octopus vulgaris) in the small-scale trap fishery off the Canary Islands (central-east Atlantic). Fisheries Research 35, 183–189.CrossRefGoogle Scholar
Moriyasu, M. (1983) Biologie et pêche des octopodes. Ii—l'exploitation des octopodes au Japon. La Pêche Maritime 1264, 452–457.Google Scholar
Rasmussen, A. (1997) Octopus fisherman's perspective. In Lang, M.A. et al. (eds) Proceedings of the workshop on the fishery and market potential of octopus in California. Washington: Smithsonian Institution's Office of the Provost—Scientific Diving Program, pp. 151–155.Google Scholar
Sánchez, P. (1986) Distribución batimétrica y abundancia de algunos cefalópodos del Mar Catalán. Investigacion Pesquera 50, 237–245.Google Scholar
Sánchez, P., Belcari, P. and Sartor, P. (1998) Composition and spatial distribution of cephalopods in two north-western Mediterranean areas. South African Journal of Marine Science 20, 17–24.CrossRefGoogle Scholar
Sánchez, P. and Martín, P. (1993) Population dynamics of the exploited cephalopod species of the Catalan Sea (north-west Mediterranean). Scientia Marina 57, 153–159.Google Scholar
Sánchez, P. and Obarti, R. (1993) The biology and fishery Octopus vulgaris caught with clay pots on the Spanish Mediterranean coast. In Okutani, T. et al. (eds) Recent advances in cephalopod fisheries biology. Tokyo: Tokai University Press, pp. 477–487.Google Scholar
Terpes, G. and Peristeraki, P. (2002) Trends in the abundance of demersal species in the southern Aegean Sea. Scientia Marina 66, Suppl. 2, 243–252.CrossRefGoogle Scholar
Waller, R., Perry, H., Trigg, C., Mcbee, J., Erdman, R. and Blake, N. (1995) Estimates of harvest potential and distribution of the deep-sea red crab, Chaceon quinquedens, in the north-central Gulf of Mexico. Gulf Research Reports 9, 75–84.CrossRefGoogle Scholar
Withaker, D., Delancey, L.B. and Jenkin, E. (1991) Aspects of the biology and fishery potential for Octopus vulgaris off the coast of South Carolina. Bulletin of Marine Science 49, 482–493.Google Scholar