Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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Effects of Bisphenol A to interspecific hybrids between marine medaka Oryzias dancena and javanese medaka O. javanicus

바다송사리, Oryzias dancena와 자바송사리, O. javanicus 간 잡종에 대한 비스페놀 A의 효과

  • Kim, Bong-Seok (Biotechnology Research Division, National Fisheries Research & Development Institute) ;
  • Song, Ha-Yeun (Department of Marine Bio-Materials & Aquaculture, Pukyong National University) ;
  • Nam, Yoon-Kwon (Department of Marine Bio-Materials & Aquaculture, Pukyong National University) ;
  • Kim, Dong-Soo (Department of Marine Bio-Materials & Aquaculture, Pukyong National University)
  • 김봉석 (국립수산과학원 생명공학과) ;
  • 송하연 (부경대학교 해양바이오신소재학과) ;
  • 남윤권 (부경대학교 해양바이오신소재학과) ;
  • 김동수 (부경대학교 해양바이오신소재학과)
  • Received : 2011.04.12
  • Accepted : 2011.07.06
  • Published : 2011.08.31
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Abstract

Bisphenol A (BPA) is mainly used in the production of epoxy resins and polycarbonate plastics, which is a known endocrine disruptor and acutely toxic to aquatic organisms. In this study, estrogenic effect of BPA was investigated on hybrid between Oryzias dancena and O. javanicus (ODJ). ODJ were exposed to BPA of various concentrations (eg. 2.5 mg/L, 5.0 mg/L and 10.0 mg/L) for 56 days. The growth rate, abnormality and the ratio of female and male were observed in test group and control group. As a result, the growth was $14.7{\pm}2.0$ mm in total length (TL) in 2.5 mg/L, $13.7{\pm}2.5$ mm in 5.0 mg/L, $12.8{\pm}2.5$ mm in 10.0 mg/L in test group while it was $18.0{\pm}1.2$ mm in TL in control group which was not treated with bisphenol A. The result showed that the growth decreased as the concentration of BPA increased. The abnormality rate was 13.6% in control group, 65.4% in 2.5 mg/L, 81.3% in 5.0 mg/L and 98.1 % in 10.0 mg/L which showed increase in abnormality as an increase of BPA concentration. As a result of analyzing ratio of sex in the test group and control group, 6.0% was examined to be interspecific in controls, 76.9% in 2.5 mg/L and 100.0% in 5.0 mg/L and 10.0 mg/L. In conclusion, these results suggest that BPA has estrogenic effect on ODJ.

본 연구에서는 비스페놀 A를 사용하여 바다 송사리 Oryzias dancena와 자바 송사리 O. javanicus의 잡종군(ODJ)의 성전환을 유도하였다. 부화 직후의 ODJ에 비스페놀 A를 2.5 mg/L, 5.0 mg/L와 10.0 mg/L의 농도로 56일간 처리한 결과 대조군의 경우 평균 전장이 $18.0{\pm}1.2$ mm로 나타났고 비스페놀 A 처리군에서는 2.5 mg/L로 처리한 경우 $15.0{\pm}2.0$ mm, 5.0 mg/L 처리군은 $13.7{\pm}2.5$ mm, 10.0 mg/L 처리군에서는 $12.8{\pm}2.5$ mm로 나타나 대조군과 비스페놀 A 처리군에서 성장 차이가 관찰되었다. 또한, 처리군 간에서도 비스페놀 A의 농도가 높을수록 성장이 느린 것으로 나타났다. 기형률을 조사한 결과 대조군은 13.6%였고, 비스페놀 A 처리군의 경우 2.5 mg/L는 65.4%로 대조군에 비해 매우 높게 나타났으며, 이보다 농도가 높은 5.0 mg/L와 10.0 mg/L에서는 각각 81.3%와 98.1%로 처리 농도가 높아질수록 기형률이 높게 나타났다. 성전환율을 분석하기 위하여 조직학적 분석을 한 결과 대조군에서 사용된 ODJ 50마리 중 정상 수컷이 47마리였으나, 3마리가 간성(intersex)을 나타내었으며, 비스페놀 A 농도가 2.5 mg/L인 그룹에서 76.9%인 40마리가 간성으로 나타났으며, 23.1%인 12마리가 수컷으로 나타났다. 비스페놀 A 농도 5.0 mg/L와 10.0 mg/L인 그룹에서는 52마리 중 수컷은 한 마리도 나타나지 않았으며, 모든 개체에서 간성이 나타났다.

Keywords

References

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