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Free Content Review of cephalopod fishery production and long term changes in fish communities in the Gulf of Thailand

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Cephalopod production in the Gulf of Thailand in 1996 was 115,966 t comprising 560,000 t of squid, 39,548 t of cuttlefish and 12,721 t of octopus, respectively. Systematic trawl surveys in the Gulf of Thailand have been conducted since 1966 and the data analyzed for the changes in fish communities. The abundance of fishery resources in the coastal waters has declined substantially based on evidence from relative indices of abundance (CPUEs) and biomass. The changes have been in size and species composition of the catch with an increased amount of low-value species and juveniles of high-value species caught. In the early years of virgin stocks, demersal fish of Nemipteridae, Priacanthidae and pelagic fish of Carangidae were the most abundant groups. In the 1970s, catches of many demersal fish, Carangidae and large predators namely rays, Lactarius lactarius and Rhinobatidae decreased remarkably while Loliginidae increased annually and became consistently most abundant. Since the 1980s, most fisheries resources in Thailand have been overfished or fully exploited. There were concurrent changes in catch composition but loliginid squid remained the most abundant. The predominant groups in the period of the 1990s were Sauridae, Loliginidae, Priacanthidae, Nemipteridae, Carangidae, Portunidae and Sepiidae.

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Document Type: Research Article

Publication date: 2002-07-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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