Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Fish and Efficiency on Attached Fish Eggs of Artificial Floating Island in Lake Soyang, Korea

소양호 인공식물섬의 어류 서식 및 어란 부착 효과

  • Received : 2014.08.21
  • Accepted : 2014.09.24
  • Published : 2014.10.31
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Abstract

The fish and attached fish eggs by artificial floating island in lake Soyang was investigation from May to June 2013. The observed fish at the floating island during the survey period were Zacco platypus (5.2 %), Siniperca scherzeri (1.0 %), Lepomis macrochirus (90.8 %) and Micropterus salmoides (3.0 %) at the Cheongpyeong-ri, Cyprinus carpio (0.4 %), Z. platypus (54.6 %), L. macrochirus (20.3 %) and M. salmoides (24.7 %) at the Ungjin-ri. The collected species at the neighboring facility were 22 species belonging the seven families. Among them, exotic species such as Carassius cuvieri, L. macrochirus and M. salmoides. Also, Z. platypus (30.4 %), L. macrochirus (18.9 %), Opsariichthys uncirostris amurensis (15.4 %) and Hemibarbus labeo (9.3 %) were numberous. Attached fish eggs number were 708,800 (800 per $m^2$) at the Cheongpyeong-ri and 974,500 (1,100 per $m^2$) at the Ungjin-ri. The fish eggs number were 504,920 of the Carassius auratus (212,640 at the Cheongpyeong-ri, 292,280 at the Ungjin-ri) and 1,178,380 of the C. carpio (496,160 at the Cheongpyeong-ri, 682,220 at the Ungjin-ri). The hatched eggs number were 350,505 of the C. auratus(102,067 at the Cheongpyeong-ri, 248,438 at the Ungjin-ri) and 811,222 of the C. carpio (238,157 at the Cheongpyeong-ri, 573,065 at the Ungjin-ri).

2013년 5월부터 6월까지 소양호에 설치된 인공식물섬에서 출현 어류와 어란 부착을 조사하였다. 잠수하여 수중 관찰한 결과 청평리에서는 피라미(Zacco platypus) 5.2%, 쏘가리(Siniperca scherzeri) 1.0%, 블루길(Lepomis macrochirus) 90.8%, 배스(Micropterus salmoides) 3.0% 등이 출현하였다. 웅진리에서는 잉어(Cyprinus carpio) 0.4%, 피라미 54.6%, 블루길 20.3%, 배스 24.7%등 이었다. 시설물 인접수역에서는 총 7과 22종이 출현하였다. 이 중 국외 도입종에 속하는 어종은 떡붕어(Carassius cuvieri), 블루길, 배스 등 이었고 피라미 30.4%, 블루길 18.9%, 끄리(Opsariichthys uncirostris amurensis) 15.4%, 누치(Hemibarbus labeo) 9.3% 등의 순으로 개체수가 풍부하였다. 부착한 어란은 $1m^2$당 청평리에서는 800개, 웅진리에서 1,100개 이었으며 시설물 전체에서는 청평리에서 708,800개, 웅진리에서 974,500개로 추정되었다. 어란은 붕어(Carassius auratus) 504,920개(청평리 212,640개, 웅진리 292,280개)와 잉어 1,178,380개(청평리 496,160개, 웅진리 682,220개) 이었다. 부착한 수정란이 폐사하지 않고 부화한 개체는 붕어 350,505개(청평리 102,067개, 웅진리 248,438개)와 잉어 811,222개(청평리 238,157개, 웅진리 573,065개) 이었다.

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