Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Fish Fauna and Weight-Length Relationships for 9 Fish Species in Andong Reservoir

안동호의 어류상과 9개 어종의 길이-무게 상관관계에 관한 연구

  • Han, Seung-Cheol (Department of biology, College of Natural Sciences, Andong National University) ;
  • Lee, Hak-Yeong (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 : 2007.07.30
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Abstract

The fish fauna and weight-length relationship in Andong reservoir were investigated from May 2005 to March 2006. During surveyed period, 2,540 individuals 20 species belonging to 7 families were collected. Dominant species were Hemibarbus labeo(19.6%) and sub-dominant species were Carassius cuvieri (19.2%). The korea endemic species were Hemiculter eigenmanni(7.1%), Squalidus chankaensis tsuchigae (0.1 %), Corroperca herzi (0.1 %) and introduced fishes were Carassius cuvieri (19.21 %) Lepomis macrochirus (4.2%), Micropterus salmoides (0.2%). Dominace, species diversity, species richness, species even-ness were 0.39, 3.16, 2.42, 0.73 respectively. The values of the exponent b in the weight-length relation-ship $W=aL^{b}$ ranged from 2.9162(H. labeo, $R^{2}$=0.9567) to 3.2509(Zacco pla쇼pus, $R^{2}$=0.9928) and the median value was 3.1079, whereas 50% of the values ranged between about 3.05 to 3.20. The Condition factor(K) showed good state of health in the surveyed species (excepts H. labeo and Cyprinus carpio).

2005년 5월부터 2006년 3월까지 6회에 걸쳐 안동호에 서식하는 주요어종의 어류상과 길이-무게 상관관계를 조사한 결과는 다음과 같다. 본 조사에서 확인된 어류는 총 7과 20종2540개체였으며, 우점종은 누치 (Hemibarbus labeo, 19.6%), 아우점종은 떡붕어(Carassius cuvieri, 19.2%)로 나타났다. 한국고유종은 치리(Hemiculter eigenmanni, 7.1%), 참몰개(Squalidus chankaensis tsuchigae, 0.1%), 꺽지 (Coreoperca herzi, 0.1%) 등 3종, 외래어종은 떡붕어(Carassius cuvieri, 19.21%), 블루길(Lepomis macrochirus,4.2%), 베스(Micropterus salmoides, 0.2%)3종으로 나타났으며, 우점도는 0.388, 종다양도 3.159, 종풍부도 2.423, 균등도는 0.730이었다. 주요 출현어종 9종에 대한길이-무게 상관관계식에서 피라미(Zacco platypus, 3.2509, $R^{2}$= 0.9928)가 가장 높은 성장도를 나타냈으며, 누치(H. labeo, 2.9162, $R^{2}$ = 0.9567)가 가장 낯은 성장도를 나타냈다. 각 어종에 패한 비대지수에서는 누치( H. labeo)와 잉어(Cyprinus carpio)를 제외한 7개 어종에서 기울기가 양의 값으로 나타나 건강상태가 비교적 양호한 것으로 확인되었다. 각 어종에 대한 길이-무게 상관관계에서 매개변수 b의 값의 평균은 3.1079로 성장상태가 매우 양호한 것으로 확인되었다.

Keywords

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