Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Fluctuation in the Abundance and Species Composition of Fishes Collected by a Fyke Net in the Coastal Waters of Geumo-do, Yeosu

여수 금오도 연안 이각망에 어획된 어류의 종조성 및 양적변동

  • 황재호 (전남대학교 친환경해양바이오특성화사업단) ;
  • 유경희 (전라남도 여수시) ;
  • 이성훈 (전남대학교 수산해양대학 해양기술학부) ;
  • 한경호 (전남대학교 수산해양대학 해양기술학부)
  • Published : 2008.02.29
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Abstract

The fluctuation in the abundance and species composition of fish was investigated using a fyke net with entrances on both sides in the coastal waters of Geumo-do, Yeosu, Chollanam-do, Korea, from May 2003 to April 2004. A total of 2,379 fishes (392.13 kg) were sampled and classified into 11 orders, 34 families, and 53 species. The dominant orders were Perciformes, Scorpaeniformes, and Pleuronectiformes, which accounted for 67.9% of the collected fishes. The dominant species was Acanthopagrus schlegelii (235 individuals, 19.00 kg), followed by Konosirus punctatus (182 individuals, 9.53 kg), and Apogon lineatus (161 individuals, 1.69 kg). The number of individuals and biomass were higher in spring and summer than in winter, and the monthly variation may be related to the water temperature. The diversity index was highest in September (H'=2.9) and lowest in December (H'=1.8). The evenness index was highest in August (J=0.9) and lowest in December (J=0.7). The dominance index was highest in December (D=0.7) and lowest in August (D=0.2). The economically important species in this area are Acanthopagrus schlegelii, Konosirus punctatus, Lateolabrax maculatus, Argyrosomus argentatus, Trichiurus lepturus, Lateolabrax japonicus, and Sebastes schlegelii.

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References

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