Assessment of the Health of Fish Species Collected in Agricultural Reservoirs, AsanHo and NamyangHo

농업용저수지 아산호와 남양호에 서식하는 어류의 건전성 평가

  • Kim, Byung-Seok (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Park, Kyung-Hun (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Park, Yoen-Ki (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Joeng, Mi-Hye (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • You, Are-Sun (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Yang, Yu-Jung (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Choi, Ju-Byun (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Kwon, Ok-Kyung (National Institute of Agricultural Science and Technology (NIAST), Rural Development Administration (RDA)) ;
  • Ahn, Young-Joon (School of Agricultural Biotechnology, Seoul National University)
  • 김병석 (농업과학기술원 농산물안전성부) ;
  • 박경훈 (농업과학기술원 농산물안전성부) ;
  • 박연기 (농업과학기술원 농산물안전성부) ;
  • 정미혜 (농업과학기술원 농산물안전성부) ;
  • 유아선 (농업과학기술원 농산물안전성부) ;
  • 양유정 (농업과학기술원 농산물안전성부) ;
  • 최주현 (농업과학기술원 농산물안전성부) ;
  • 권오경 (농업과학기술원 농산물안전성부) ;
  • 안용준 (서울대학교 농생명공학부)
  • Published : 2008.03.31

Abstract

The purpose of this study was to establish biomonitoring method for the assessment of the health of fish species in agricultural reservoirs polluted from various environmental contaminants. The ichthyofauna and fish community were investigated in the AsanHo and NamyangHo from September to November 2007. We measured abundance, size distribution, biomass, the number of fish with external and internal lesions, organosomatic index of the fishes collected in the AsanHo and NamyangHo. Dominant species were Lepomis macrochirus, Carassius auratus and the highest biomass were found in Cyprinus carpio, Carassius auratus in the AsanHo and NamyangHo, respectively. The composition of age in the population of Carassius auratus in the AsanHo and NamyangHo was stabled by size distribution analysis. The sex ratio of Carassius auratus were 1:0.36, 1:0.52 as female: male ratio in AsanHo and NamyangHo, respectively. The GSI of were 4.30, 1.69 of female and 1.45, 1.70 of male in AsanHo and NamyangHo, respectively. Most carp were 10-70 cm long in the AsanHo and 20-50 cm in the NamyangHo. The sex ratio of Cyprinus carpio were 1:0.42, 1:0.59 as female: male ratio in AsanHo and NamyangHo, respectively. The GSI of were 0.16, 3.46 of female and 0.93, 2.37 of male in AsanHo and NamyangHo, respectively. Of the 227 fish examined, 1.8% had some type of external lesion in AsanHo and 10% in NamyangHo. Overall, HAI scores ranged from 10-60 and HAI scores of AsanHo relatively lower than that of NamyangHo.

Keywords

ichthyofauna;organosomatic index;fish health assessment index;biomonitoring;agricultural reservoirs

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