Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Distribution of Common Squid, Todarodes pacificus, Paralarvae in the Yellow Sea in Spring and Autumn, 2013 - 2015

2013 - 2015년 춘계 및 추계 서해의 살오징어(Todarodes pacificus) 유생 출현 양상

  • Kim, Yoon-Ha (Fisheries Resources Management Division, National Institute of Fisheries Science) ;
  • Shin, Dong-Hoon (Fisheries Resources Research Center, National Institute of Fisheries Science)
  • 김윤하 (국립수산과학원 연근해자원과) ;
  • 신동훈 (국립수산과학원 수산자원연구센터)
  • Received : 2018.11.21
  • Accepted : 2019.02.25
  • Published : 2019.02.28
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Abstract

Paralarvae of the common squid, Todarodes pacificus, were sampled with the bongo net (diameter: 60 cm, mesh: $333{\mu}m$) with a research vessel (Tamgu 20) at 18 stations along the coastal waters of the Yellow Sea in spring and autumn from 2013 to 2015. Over this period, 4 Paralarvae were collected. Paralarval density was $0.1inds./1,000m^3$ and $0.2inds./1,000m^3$ in autumn 2014 and $0.1inds./1,000m^3$ and $0.2inds./1,000m^3$ in autumn 2015. The range of mantle length for paralarvae was from 1.5 to 8.3 mm. Survival temperature ($15-24^{\circ}C$) for embryo stage and paralarvae was found in locations shallower than 56 m of depth at stations which were sampled for paralarvae.

서해에서 살오징어(Todarodes pacificus) 유생 분포를 파악하기 위해 2013년 - 2015년 춘계(4월)와 추계(11월) 자원조사선 탐구 20호로 18정점에 대해 CTD 관측 및 지름 60 cm, 망목 $333{\mu}m$의 봉고네트를 이용한 경사 채집을 실시하였다. 조사기간 동안 채집된 유생은 총 4개체로 2014년과 2015년 추계에 각 2개체였으며, 유생의 외투장은 1.5 - 8.3 mm이었다. 조사기간 동안 춘계와 2013년 추계에는 유생이 출현하지 않았다. 유생밀도는 2014년 추계에 $0.1inds./1,000m^3$과 $0.2inds./1,000m^3$, 2015년 추계에 $0.1inds./1,000m^3$과 $0.2inds./1,000m^3$로 나타났다. 유생이 채집된 정점에서 배아발달 및 유생의 생존이 가능한 수온대($15-24^{\circ}C$)는 수심 56 m보다 얕은 곳에 위치하였다.

Keywords

References

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