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In the Western Central Atlantic Fishery Commission (WECAFC) area, large pelagics contribute only about 6% of total landings, but are nonetheless significant for many countries. Large pelagic fishes are caught in all WECAFC states, and within the WECAFC region by several distant water fishing nations. However only 19 of 40 WECAFC Member States report catches to FAO. The fisheries range in scale and technological sophistication from artisanal fishers trolling from canoes to modern commercial longliners and purse seiners (mostly from distant water fishing nations). The available information on development of small-scale and large scale fleets targeting large pelagics, indicates a significant trend of increasing fishing capacity in the countries of the WECAFC region. Several species which are not assessed by ICCAT are of considerable importance in large pelagic fisheries in the WECAFC region. Overall, about half the landings of large pelagics in the WECAFC region are from species which are assessed. Existing institutional mechanisms are not adequate for management of shared or straddling fish stocks and those of highly migratory fish, as per the recent UN Agreement. Any such institution must have linkages with extraregional organisations, primarily ICCAT, and, in order to maximise efficiency and avoid duplication, should also be able to deal with shared, straddling and migratory fish stocks other than pelagics, for example, lobster and reef fishes with planktonic early life history stages. WECAFC, with modifications to its statutes, appears to be the most feasible existing organisation to adopt such a role.
Charts of the Atlantic Ocean for each quarter of the year--January-March, etc.--show the distribution of 10 species and groups of species fished by the Japanese Atlantic longline fishery in the years 1956-68. These charts are based on detailed catch and fishing effort data published by the Japanese Government. Quarterly average catch per unit of effort was calculated for each 5° x 5° square, and contour lines were drawn through equal levels of catch per unit of effort. The text explains the calculation and contouring processes in detail, and has a section of remarks and explanation for each of the 10 species or groups.
Of the principal market species, the status of three of the 23 stocks is unknown; namely, albacore in the Mediterranean Sea and skipjack in the Atlantic (two stocks).
This open access book is an original contribution to the knowledge on fishing and research associated with one of the most enigmatic fish of our seas: bluefin tuna, Thunnus thynnus (L.). Based on available evidence, it reconstructs the possible methods used to catch large spawners in the Strait of Gibraltar thousands of years ago and describes the much more recent overfishing that led to a great reduction in the catches of the trap fishery on the area and the disappearance of the northern European fisheries. It is the first book to relate the overfishing of juvenile fishes in certain areas to the decline of large spawners in other very distant areas, revealing one of the main underlying causes of this decline, which has remained a mystery to the fishing sector and scientists alike for over 50 years. This finding should serve to prevent similar cases from arising in the future.
This book reviews and evaluates the scientific basis of U.S. management of fisheries for Atlantic bluefin tuna. In particular, it focuses on the issues of stock structure and stock assessments used by the National Oceanic and Atmospheric Administration's National Marine Fisheries Service for management under the International Convention for the conservation of Atlantic Tunas.