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Study on the Young Yellowtail, Seriola quinqueradiata (Carangidae, Perciformes) from Drifting Seaweeds in the Coast of Tongyeong, Korea

경남 통영해역의 뜬말에 서식하는 방어 유어에 관한 연구

  • 조선형 (한국해양연구원 해양자원연구본부) ;
  • 명정구 (한국해양연구원 해양자원연구본부) ;
  • 김종만 (한국해양연구원 해양자원연구본부) ;
  • 이진환 (상명대학교 생물학과) ;
  • 박용주 (한국해양연구원 해양자원연구본부)
  • Published : 2002.11.01

Abstract

Young Seriola quinqueradiata associated with drifting seaweeds weye investigated monthly between April 1998 and March 1999 in the coastal area of Tongyeong, Korea, The most abundant types of seaweed were in the genus Sargassum, including S. horneri, S. miyabei and S. thunbergii. The size of seaweed patches varied by season: patches larger than 4 m in diameter were found in May, whereas patches smaller than 0.5 m in diameter were abundant in August and September. Young Serioia quinqueradiata ranged from 11.9 to 135.4 mm in total length were collected from May to July at the study area. The striped bands on the bodies of young Seriola quinqueradiata were developed at 10.0$\~$15.0 mm in total length and increased up to 12 bands with growth, These bands were gradually disappeared at 130.0$\~$150.0 mm in total length. There was no significant relationship between the number of Seriola quinqueradiata collected and the weights of the seaweed patches ($r^2=0.04,\;p<0.05$).

뜬말에 서식하는 방어 치어의 형태 및 출현 양상을 조사하기 위하여 1998년 4월부터 1999년 3월까지 매월 1$\~$2회에 걸쳐 경상남도 통영시 산양면 연안의 갈도, 고암, 흥도주변 해역까지 뜬말을 채집하였다. 뜬말은 괭생이모자반, 미아베모자반 등 대부분 모자반류 (Sargassum spp.)가 대부분이었으며, 뜬말의 크기는 5월에는 직경 4m 이상인 것들이 많았고, 8$\~$9월에는 직경 0.5 m 이하인 것들이 주류를 이루었다. 방어 치어는 5월에서 7월까지 뜬말주변에서 서식하였으며, 전장은 12.9$\~$135.4mm였다. 이 시기의 방어 치어는 체측에 갈색 가로 줄무의를 가지고 있었는데, 이 무의는 전장 10.0-15.0mm에 나타나기 시작하여 성장함에 따라 12개까지 증가하였다가, 전장이 130.0-150.Omm가 되면서 점차 사라졌다. 채집된 방어의 개체수와 뜬말의 밀도계수 (C) 사이에는 뚜켠한 상관관계가 보이지 않았다 ($r^2=0.04, p<0.05$).

Keywords

References

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