Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Seasonal Fluctuation in Abundance and Species Composition of Fish Collected by a Beam Trawl in Coastal Waters off Samcheonpo

삼천포 연안에서 새우 조망에 어획되는 어류 종조성 및 계절변동

  • Yu, Tae-Sik (Department of Fisheries and Sciences, Chonnam National University) ;
  • Lee, Seong-Hoon (Department of Fishery, Marine, Industry, Tourism, and Leisure, Chonnam National University) ;
  • Kim, Sa-Jo (Yeosu Marine Science High School) ;
  • Kwon, Jin-Goo (Department of Fisheries and Sciences, Chonnam National University) ;
  • Han, Kyeong-Ho (Department of Fisheries and Sciences, Chonnam National University)
  • 유태식 (전남대학교 수산과학과) ;
  • 이성훈 (전남대학교 수산해양산업관광레저융합학과) ;
  • 김사조 (여수해양과학고등학교) ;
  • 권진구 (전남대학교 수산과학과) ;
  • 한경호 (전남대학교 수산과학과)
  • Received : 2020.07.29
  • Accepted : 2020.09.07
  • Published : 2020.09.30
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Abstract

Seasonal fluctuation in abundance and species composition of fish in coastal waters off Samcheonpo were investigated using seasonal samples collected by a beam trawl in 2019 to compare the variation of species composition and dominant species with previous studies. A total of 6,518 fish were sampled and classified into 44 species, 30 families, and 6 orders. The dominant species were Nuchequula nuchalis (1,542 individuals, 23.7%), Platycephalus indicus (529 individuals, 8.1%), Thryssa kammalensis (437 individuals, 6.7%), Argyrosomus argentatus (403 individuals, 6.2%), and Acanthogobius flavimanus (354 individuals, 5.4%). The highest number of individuals was found in July (2,385 individuals), while the lowest number of individuals was found in January (925 individuals). The diversity index was the highest in April (H'=2.733) and the lowest in July (H'=2.546).

이 연구는 과거 삼천포 해역에서 진행된 어류 종조성과 우점종의 변동을 알아보기 위하여 2019년 1월부터 10월까지 계절별로 삼천포 연안에서 새우 조망에 어획된 어류를 대상으로 종조성 및 군집구조를 조사하였다. 표층 평균 수온은 8.7~24.4℃로 나타났고, 표층 평균 염분은 31.5~33.7 psu로 나타났다. 어획된 어류는 총 6목 30과 44종이었고, 6,518 개체가 어획되었다. 이 중 농어목이 14과 19종으로 가장 많은 출현종수를 보였고, 우점종은 주둥치 (1,542개체, 23.7%), 양태(529개체, 8.1%), 청멸(437개체, 6.7%), 보구치(403개체, 6.2%) 및 문절망둑(354개체, 5.4%) 순이었다. 가장 많은 개체수가 어획된 달은 7월 2,385개체가 어획된 7월이었고, 1월에 925개체로 가장 적은 개체가 어획되었다. 다양도 지수는 4월에 2.733으로 가장 높았고, 우점도는 7월에 45.1%로 가장 높았다.

Keywords

References

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