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Species Composition and Seasonal Variation of Decapod Crustacean Assemblage in Hampyeong Bay, Korea

서해 함평만 십각 갑각류의 종조성과 계절변동

  • KIM Jung Nyun (Department of Marine Biology, Pukyong National University) ;
  • CHOI Jung Hwa (Fisheries Resources Research and Management Division, NFRDI) ;
  • Im Yang Jae (West Sea Fisheries Research Institute, NFRDI) ;
  • CHOI Kwang Ho (Fisheries Resources Research and Management Division, NFRDI) ;
  • MA Chae Woo (Division or Life Sciences, Soonchunhyang University)
  • 김정년 (부경대학교 자원생물학과) ;
  • 최정화 (국립수산과학원 자원연구팀) ;
  • 임양재 (국립수산과학원 서해연구소) ;
  • 최광호 (국립수산과학원 자원연구팀) ;
  • 마채우 (순천향대학교 생명과학부)
  • Published : 2005.02.01

Abstract

Species composition and seasonal variation of decapod crustacean assemblage in Hampyeong Bay, Korea were examined. Sampling was monthly made by a shrimp trawl between March 2003 to February 2004. A total of 39 species of 20 families were collected. Of these, Latreutes planirostris, Palaemon gravieri, Parapenaeopsis tenella, Exopalaemon carinicauda, Charybdis japonica, Trachysalambria curvirostris and Palaemon macrodactylus were dominant species comprising $84.3\%$ of the total number of individuals. Charybdis japonica, P. gravieri, Oratosquilla oratoria, E. carinicauda, T curvirostris, Metapenaeus joyneri and P. tenella represented $90.6\%$ of the total biomass. While total abundance (number of individuals) was high in spring, total biomass and species richness (number of species) and diversity were high in summer. Cluster analysis, based on monthly abundance data of the 14 most common species, showed that the species were separated into three different groups. Group A composed of Leptochela gracilis, Alpheus japonicus, Crangon uritai, P. macrodactylus, E. carinicauda, P. gravieri, O. oratoria, C. japonica, which were year round residents, group B M. joyneri, T. curvirostris and P. tenella, which were abundant in summer, and group C Crangon hakodatei, Latreutes anoplonyx and L. planirostris, which were abundant in winter. Principal component analysis revealed that seasonal variation in the decapod crustacean assemblage was attributed to the abundance of temporal species such as penaeid shrimps, which were abundant in summer, due to seasonal variation of water temperature and reproductive pattern.

Keywords

References

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