Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Seasonal Variation of Caprellids (Crustacea: Amphipoda) on Blades of Zostera marina in Kwangyang Bay, Korea

광양만 잘피엽상에 서식하는 바다대벌레류의 계절변동

  • Yun Sung Gyu (Department of Biology, Graduate School, Taegu University) ;
  • Byun Sung Hye (Department of Biology, Graduate School, Taegu University) ;
  • Kwak Seok Nam (Department of Oceanography, Pukyong National University) ;
  • Huh Sung Hoi (Department of Oceanography, Pukyong National University)
  • 윤성규 (대구대학교 대학원 생물학과) ;
  • 변성혜 (대구대학교 대학원 생물학과) ;
  • 곽석남 (부경대학교 해양학과) ;
  • 허성회 (부경대학교 해양학과)
  • Published : 2002.03.01
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Abstract

Seasonal variations of species composition and density of caprellids was accomplished in eelgrass beds around Daedo Island, a south coast of Korea. Sampling was performed monthly using an epifaunal sampler at two stations from June 1996 to May 1997, Caprellids were comprised of 6 species belong to a family Caprellidae, Mean density was 402 ind./$m^2$. The numerically-dominant species were Caprella tsugarensis (216 ind./$m^2$) and C. kroeyeri (129 ind./$m^2$). High density was occurred in the early summer, and lows in autumn and winter. The density of caprellids was correlated with the biomass of the eelgrass. Predation pressure by fish was also correlated with the density of caprellids in spring.

1994년 6월에서 1995년 5월 사이 광양만 대도 주변의 잘피밭에서 Epifaunal sampler를 이용하여 매달 바다대벌레류를 채집하여 종조성과 계절변동을 조사하였다. 조사기간 동안 총 1과 1속 6종의 바다대벌레류가 출현하였다. 그 중 짧은팔바다대벌레 (Caprella tsugarensis)와 허리갈고리바다대벌레 (Csprella kroeyeri)가 각각 전체 개체수의 $53.9\%$와 $32.1\%$를 차지하며 우점하였다. 출현 종수, 개체수 모두 이른 여름철에 높았고 가을과 겨울철에는 낮아져 뚜렷한 계절변동을 보였다. 이러한 바다대벌레류의 계절변동은 잘피의 생체량 변동과 밀접한 관련을 보였다. 또한 어류의 포식압과도 연관이 있는 것으로 추정된다.

Keywords

References

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