Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Fluctuations in abundance and species composition of fishes collected by gill net fisheries in coastal water of Yeosu, Korea

여수 연안에서 자망에 어획된 어류의 종조성 및 양적변동

  • Oh, Seong-Jae (Department of Fisheries Science, Chonnam National University) ;
  • Han, Kyeong-Ho (Department of Fisheries Science, Chonnam National University) ;
  • Koh, Su-Jin (Department of Fisheries Science, Chonnam National University) ;
  • Lee, Seong-Hun (Department of Fisheries Science, Chonnam National University) ;
  • Shin, Lim-Soo (Department of Fisheries Science, Chonnam National University)
  • Received : 2014.11.11
  • Accepted : 2014.11.28
  • Published : 2014.11.30
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Abstract

Monthly variation in abundance and species composition of the fishes were investigated based on specimens collected by gill net in coastal water of Yeosu from October, 2009 and February, May, August, 2010. The collected fishes were 1,529 individuals (183,840g) of the total, identified into 6 orders, 16 families and 24 species. The most dominant order fish was Perciformes comprised 9 species, 7 families, and followed Pleuronectiformes comprised 5 species, 3 families, Scorpaeniformes comprised 5 species, 2 families. These 3 orders constituted 81.1% of the total collected fish. During the study, most dominant species was Hexagrammos otakii accounted for 189 individuals (12.4%) of the total, followed by Lateolabrax japonicus 165 individuals (10.8%), Hexagrammos agrammus 154 individuals (10.0%). The fish was collected by a gill net in coastal water of Yeosu from October, 2009 and February, May, August, 2010, the diversity index of the fishes was 2.09~2.66, which was the highest in August, 2010 and the lowest in February, 2010. The evenness index of them was 0.84~0.89, which was the highest in August, 2010 and the lowest in February, 2010 and the richness index of them was 2.02~3.14, which was the highest in October, 2009 and the lowest in February, 2010. The analyzed species diversity index by the each stations was 2.47~2.66 and the evenness index was 0.84~0.90 and the richness index 2.99~3.37. The similarity of community structure per season was very high which was the least in spring and fall. In addition, the community structure was very similar in state 3 and 2 out of each stations.

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