Species composition and abundance of penaeid shrips in the outer Songkhla Lake of Thailand
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Abstract
Twenty-two species from 6 genera of Penaeidae were reported from the present study. Six species of Penaeus (Farbricius, 1798) were found; P. japonicus (Bate, 1888), P. latisulcatus (Kishinouye, 1896), P. monodon (Fabricius, 1798), P. semisulcatus (De Haan, 1844), P. merguiensis(De Man, 1888) and P. silasi (Muthu and Motoh, 1979). There were two speciesof the genus Metapenaeopsis (Bonvier, 1909); M. stridulans (Alcock, 1905) and Metapenaeopsisbarbata (De Haan, 1844). The only species in genus Solenocera (H. Milne Edwards, 1837) was Solenocera crassicornis (H. Milne Edwards, 1837). There were 7 species of Metapenaeus(Wood-Masen, Alcock, 1891); M. lysianassa(De Man, 1888), M. intermedius (Kishinouye, 1900), M. ensis (De Haan, 1844), M. affinis (H. Milne Edwards, 1837 ), M. moyebi (Kishinouye, 1896), M. brevicornis (H. Milne Edwards, 1837) and M. tenuipes (Kubo, 1949). There were 3 species of Parapenaeopsis (Alcock, 1901); P. hungerfordii(Alcock, 1905) P. hardwickii (Meirs, 1878) P. sculptilis (Heller, 1862) The genus Trachypenaeus (Alcock,1901) were found 3 species. There were 3 species of Trachypenaeus (Alcock, 1901); T. sedili (Hall, 1961), T. malaiana (Balss, 1933) and T. pescadoreensis (Schmitt,1931). The species composition of Penaeid shrimps were divided three seasons; rainy season, summer season and interseason. The most dominant Penaeid shrimps species were M. moyebi, M. ensis, P. silasi and P. merguiensisthroughout the entire study period. In general, Penaeus spp. and Metapenaeus spp. were the most abundant species found in the Outer Songkhla Lake and season. Shrimp juveniles move out from the Songkhla Lake into the Gulf of Thailand. The species composition and population abundance in this study is a fundamental development of a management policy for modeling of a shrimp population in Outer Songkhla Lake.
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