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Plectranthias kamii Randll,1980(Perciformes:Serranidae)collected from Bitung, North Sulawesi: first record from the Southwest Pacific Ocean

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Acta Oceanologica Sinica 2018年第12期37卷 73-77页

作者： PERISTIWADY Teguh DU Jianguo HUKOM Frensly Damianus makatipu petrus christianus LOH Kar Hoe Bitung Marine Life Conservation Research Center for Oceanography Indonesian Institute of Sciences Third Institute of Oceanography Ministry of Natural Resources Research Center for Oceanography Indonesian Institute of Sciences Institute of Ocean and Earth Sciences University of Malaya

Three specimens of the serranid fish(Serranidae), Plectranthias kamii Randall, 1980 were collected from fish market, Bitung, North Sulawesi on May and June 2010. Some morphological characters P. kamii is closely related to P. sheni, P. megalophthalmus, P. retrofasciatus, P. rubrifasciatus, P. knappi, P. helenae, P. pelicieri, P. jothyi, P.retrofasciatus and P. randalli in sharing of body width, upper jaw length, pelvic spine length and orbit diameter.Meristic count characters of P. kamii differ from P. sheni, P. pilicieri, P. megalophthalmus, P. retrofasciatus and P.rubrifasciatus in having more numerous dorsal spine(18 vs. 15–17) and below lateral line(33–34 vs. 29–33) and differ from P. megalophthalmus and P. rubrifasciatus in having more numerous pored scales in lateral line(13 vs.14–15) and shorter of anal spine. The present anthiine fish collected from Bitung, Indonesia was described as new record and bringing the total number of species of this genus known in Indonesia to seven.

关键词： Anthinae Indonesia new record Plectranthias kamii Serranidae

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Temporal and spatial variation of fish community and their nursery in a tropical seagrass meadow

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Acta Oceanologica Sinica 2018年第12期37卷 63-72页

作者： DU Jianguo WANG Yanguo PERISTIWADY Teguh LIAO Jianji makatipu petrus christianus HUWAE Ricardo JU Peilong LOH Kar Hoe CHEN Bin Third Institute of Oceanography Ministry of Natural Resources Bitung Marine Life Conservation Research Center for Oceanography Indonesian Institute of Sciences College of Ocean and Earth Sciences Xiamen University Institute of Ocean and Earth Sciences University of Malaya

Fish species composition and spatio-temporal variability of the community were studied in a tropical seagrass meadow located in a lagoon in the eastern part of North Sulawesi. The diversity of fish community in the seagrass meadows was relatively high, with the Shannon-Wiener index ranging from 1.57 to 3.69. The family Apogonidae was the most dominant in abundance(8.27 ind./(100 m2)) and biomass(28.49 g/(100 m2)). At the species level,Apogon lateralis and Sphaeramia orbicularis were the most dominant species in abundance and biomass,respectively. For spatial distribution on species, the end, middle and mouth of the lagoon clustered together as a whole, which may be due to the substrate types found in those zones. The fish species, fish abundance and fish biomass were greater in the dry and wet seasons than in the transition season, which is explained by the strong monsoon, which provides a more suitable environment and food for the fish. The maximum length of 93.10% of the captured species was less than their length at maturity, indicating that seagrass meadows are nursery habitats for many fishes. Therefore, protection of the seagrass meadows is essential for fisheries and sustainable resource utilization.

关键词： seagrass meadows fish assemblages nursery function North Sulawesi

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