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MeetingA preliminary value chain analysis of shark fisheries in Madagascar 2015
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Book (series)Elasmobranchs of the mediterranean and black sea: status, ecology and biology, biographic analysis 2012
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No results found.The authors have compiled published information on taxonomy, distribution, status, statistics, fisheries, bycatch, biologic and ecologic parameters on age and growth, food and feeding habits, reproductive biology and stock assessment of elasmobranchs in the Mediterranean and Black Sea. This bibliographic analysis, through 661 papers dealing with elasmobranchs in the GFCM area, shows that cartilaginous species, including sharks, rays and chimaeras, are by far the most endangered group of marine fish in the Mediterranean Sea, with 31 species (40 percent of all) critically endangered, endangered or vulnerable. The biological characteristics of elasmobranchs (low fecundity, late maturity, slow growth) make them more vulnerable to fishing pressure than most teleost fish. Overfishing, wide use of non-selective fishing practices and habitat degradation are leading to dramatic declines of these species in the Mediterranean Sea. In general, elasmobranchs are not targeted but are caught incidentally. In many fisheries they are, however, often landed and marketed. The study also highlights the following points: – Works are concentrated mainly in the western Mediterranean. Few works concern endangered species and those of the GFCM priority list; – Much systematic confusion persists for some species and some others are doubtful; – The IUCN red list shows clearly the vulnerability of elasmobranchs and the lack of data; – A decline in cartilaginous fish speci es landings has been observed while fishing effort has generally increased; – A standardization of methods and expression of results on the biology should be generalized in the whole Mediterranean; – Papers on biologic parameters concern few species primarily in the occidental and central Mediterranean areas. Therefore, recommendations to fill gaps in order to protect and manage elasmobranchs stocks are proposed in this document. In fact, better understanding of the composition of incidental and targeted catches of sharks by commercial fisheries and biological and ecological parameters are fundamentally important for the conservation of these populations. Moreover, problems encountered by elasmobranchs in the GFCM area are highlighted and conservation measures are suggested. -
Book (series)WECAFC - National reports presented and stock assessment reports prepared at the CFRAMP/ FAO/DANIDA Stock Assessment Workshop on the Shrimp and Groundfish Fisheries on the Guiana-Brazil Shelf. Port-of-Spain, Trinidad and Tobago, 7-18 April 1997. 1999
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No results found.This document assembles the national reports on the shrimp and groundfish fisheries of northern Brazil, French Guiana, Guyana, Suriname, Trinidad and Tobago and eastern Venezuela presented and the stock assessment papers on selected shrimp and groundfish resources produced at the CFRAMP/FAO/DANIDA Stock Assessment Workshop on the Shrimp and Groundfish Fisheries on the Guiana-Brazil Shelf, held in Port-of-Spain, Trinidad and Tobago, from 8 to 17 April 1997.
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