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Free Content Species diversity, biomass and community structure of cephalopods off Adang-rawi Archipelago, Thailand

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The cephalopod fauna off the off Adang-Rawi Archipelago, Thailand, and adjacent areas, was investigated between December 1998 and April 1999 during the northeast monsoon season. Four families of cephalopods were found, namely Loliginidae (Loligo duvauceli, L. chinensis, Loliolus sumatrensis and Sepioteuthis lessoniana), Sepiidae (Sepiella inermis, Sepia aculeata, S. pharaonis, S. lysidas, S. brevimana and S. recurvirostra), Sepiolidae (Euprymna stenodactyla), and Octopodidae (Octopus spp.). The average catch rate and biomass were 4.34 kg h−1 and 320.66 t, respectively. The highest catches were in February (5.32 kg h−1; 382.57 t), December (4.10 kg h−1; 314.33 t) and April (3.61 kg h−1; 265.07 t). Diversity measures were applied and three assemblages recognized, i.e., the western side of Tarutao Island, north and south of Adang-Rawi Archipelago. Salinity was the best-fitting environmental parameter and correlated with biotic pattern in the survey area.

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Document Type: Research Article

Publication date: 2002-07-01

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