Distribution of Larva and Juvenile of Sand Eel, Ammodytes personatus in Kangwon-do Coast, Korea

강원연안산(産) 까나리 자치어(仔稚漁)의 분포

  • Han, Kyeong-Ho (Division of Aqua Life Science, Yosu National University) ;
  • Kim, Bok-Kee (East Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • Choi, Soo-Ha (East Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • Kim, Kwi-Young (East Sea Fisheries Research Institute, National Fisheries Research and Development Agency) ;
  • Kim, Yong-Uk (Department of Marine Biology, Pukyong National University) ;
  • Cho, Jae-Kwon (Division of Aqua Life Science, Yosu National University)
  • 한경호 (여수대학교 수산생명과학부) ;
  • 김복기 (국립수산진흥원 동해수산연구소) ;
  • 최수하 (국립수산진흥원 동해수산연구소) ;
  • 김귀영 (국립수산진흥원 동해수산연구소) ;
  • 김용억 (부경대학교 해양생물학과) ;
  • 조재권 (여수대학교 수산생명과학부)
  • Received : 1999.09.07
  • Accepted : 1999.10.20
  • Published : 1999.12.31

Abstract

To study the distribution of larva and juvenile of the sand eel, Ammodytes personatus in the Kangwon coastal, samples were collected by the larva net (RN 80 net) and small drag net at 60 stations from January 1996 to December. Appearance season of larva and juvenile of sand eel was appeared untill the January to June in the Kangwon-do coast, and the densities of them were high in June. Appearance phase, length frequency distribution of larva and juvenile of sand eel were distributed that the average standard length 10.0~30.0mm in the temperature range of $5.0{\sim}6.0^{\circ}C$ at the January to March, and April to June occurred the average standard length 40.0~80.0 mm in the temperature range of $7.2{\sim}12.0^{\circ}C$. It was distributed in southern part of Kangwon-do coast until the February to March 1996. And association of the sand eel migrated to the northern and middle part of Kangwon-do coast at April when surface water temperature was higher than $7.2^{\circ}C$. It was considered that the migration of the abundance larva and juvenile of sand eel in this area is mainly affected by the water temperature.

강원연안의 까나리 자치어(仔稚魚)의 형태발달 및 분포를 파악하기 위하여 1996년 1월부터 12월까지 강원도 연안 6마일 이내의 해역 60개 정점을 선정하여 난(卵) 치자어(稚仔魚) 네트 (RN 80 net)와 기선권형망의 일종인 소형선인망으로 채집하여 관찰하였다. 강원연안에서 까나리 자치어(仔稚魚)의 체장조성 및 출현양상은 1~3월에 평균체장이 10.0~30.0 mm의 개체가 $5.0{\sim}6.0^{\circ}C$의 수온에서 주로 출현하였으며, 4~6월에는 평균체장이 40.0~80.0 mm의 개체가 $7.2{\sim}12.0^{\circ}C$의 수온에서 분포하였다. 자치어(仔稚魚)가 출현하였던 시기는 1월에서 6월까지였고, 6월에 가장 높은 밀도를 나타냈다. 수온이 낮은 2~3월까지 동해 남부해역에서만 분포하지만, 표층수온이 $7.2^{\circ}C$ 이상으로 상승하는 4월부터 점차적으로 북상하여 중부와 북부해역에 나타났고, 분포상 특성은 수온과 밀접한 관계가 있는 것으로 나타났다.

Keywords