Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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The Influence of Muddy Water in Imha Reservoir on the Ichthyofauna and Fish Growth

임하호의 탁수가 어류상 및 어류생장에 미치는 영향

  • Han, Seung-Cheol (Department of biology, College of Natural Sciences, Andong National University) ;
  • Lee, Hak-Young (Department of biology, College of Natural Sciences, Andong National University) ;
  • Seo, Eul-Won (Department of biology, College of Natural Sciences, Andong National University) ;
  • Shim, Jae-Hun (Natural Environment Studying Institute) ;
  • Lee, Jong-Eun (Department of biology, College of Natural Sciences, Andong National University)
  • 한승철 (안동대학교 자연과학대학 생명과학과) ;
  • 이학영 (안동대학교 자연과학대학 생명과학과) ;
  • 서을원 (안동대학교 자연과학대학 생명과학과) ;
  • 심재헌 (경상북도 자연환경연수원) ;
  • 이종은 (안동대학교 자연과학대학 생명과학과)
  • Published : 2007.08.30
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Abstract

The number of investigated fish collected from the Andong and the Imha reservoir were 2,540 individuals 20 species belonging to 7 families, 850 individuals 11 species belonging to 4 families respectively from May 2005 to March 2006. The total number of the common 3 species individuals investigated caught from the Andong reservoir and the Imha reservoir were 486 individuals and 124 individuals respectively. The investigated individuals is similar(${\pm}2.5$ mm) to 171 individuals make a comparative study. The Opsariichthys uncirostris, Culter brevicauda, Hemiculter eigenmanni of length-weight relationship were TW = $0.00007TL^{3.0543}$, TW = $0.0000009TL^{3.3654}$, TW = $0.00000^{3.3872}$ in the Andong reservoir and TW = $0.00002TL^{2.8493}$, TW = $0.00001TL^{2.8744}$, TW = $0.000004TL^{3.1082}$ in the Imha reservoir respectively. The Condition factor(K) of the Andong reservoir showed the positive slopes in all three species and to be in a good nutrition condition; where as the condition factor(K) of the Imha reservoir showed the negative slopes in two species except in H. eigenmanni and appeared to be in a little bad nutrition condition. Relative condition factor(Kn) indicating that O. uncirostris and C. brevicauda in Andong reservoir is more rotund than ones of Imha reservoir but H. eigenmanni in the Imha reservoir is more rotund than the ones of the Andong reservoir.

2005년 5월부터 2006년 3월까지 안동호와 임하호의 어류상과 서식하는 어종인 끄리(Opsariichthys uncirostris amurensis), 백조어(Culter brevicauda) 그리고 치리(Hemiculter eigenmanni)의 길이-무게 상관관계에 관한 조사 결과를 실시하였으며 결과는 다음과 같다. 조사된 어류는 안동호와 임하호 각각 7과 20종 2,540개체, 4과 11종 850개체였으며, 끄리, 백조어, 치리의 개체수는 안동호에서 총 486개체, 임하호에서는 총 124개 체로 조사되었고, 이들 공서 어류는 길이가 비슷한$({\pm}2.5$ mm) 171개체를 비교하였다. 안동호에 서식하는 끄리, 백조어, 치리의 길이-무게 상관관계식은 각각 TW = $0.000007TL^{3.0543}$, TW = $0.0000009TL^{3.3654}$, TW = $0.000001TL^{3.3872}$로 나타났으며, 임하호에서는 각각 TW = $0.00002TL^{2.8493}$, TW = $0.00001TL^{2.8744}$, TW = $0.000004TL^{3.1082}$로 나타났다. 비대지수에서는 안동호에서는 3종 모두 기울기가 양의 값으로 영양상태가 양호한 것으로 나타났으나, 임하호에서는 치리를 제외한 2종에서 기울기가 음의 값을 나타내어 영양상태가 좋지 않은 것으로 나타났다. 상대적 비대지수를 알아본 결과 끄리와 백조어에서 안동호의 개체가 임하호의 개체보다 비대한 경향을 보였으며, 치리는 임하호의 개체가 더 비대한 것으로 나타났다.

Keywords

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