Development and Reproduction (한국발생생물학회지:발생과생식)

The Korean Society of Developmental Biology (한국발생생물학회)
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Hatching Rate of Eggs, and Growth of Larvae and Juveniles from Selected Olive Flounder, Paralichthys olivaceus

선발 육종된 넙치, Paralichthys olivaceus의 부화율 및 자치어 성장

  • Min, Byung-Hwa (Genetics and Breeding Research Center, National Fisheries Research and Development Institute) ;
  • Lee, Jeong-Ho (Genetics and Breeding Research Center, National Fisheries Research and Development Institute) ;
  • Noh, Jae-Koo (Genetics and Breeding Research Center, National Fisheries Research and Development Institute) ;
  • Kim, Hyun-Chul (Genetics and Breeding Research Center, National Fisheries Research and Development Institute) ;
  • Park, Choul-Ji (Genetics and Breeding Research Center, National Fisheries Research and Development Institute) ;
  • Choi, Sang-Jun (Genetics and Breeding Research Center, National Fisheries Research and Development Institute) ;
  • Myeong, Jeong-In (Genetics and Breeding Research Center, National Fisheries Research and Development Institute)
  • 민병화 (국립수산과학원 육종연구센터) ;
  • 이정호 (국립수산과학원 육종연구센터) ;
  • 노재구 (국립수산과학원 육종연구센터) ;
  • 김현철 (국립수산과학원 육종연구센터) ;
  • 박철지 (국립수산과학원 육종연구센터) ;
  • 최상준 (국립수산과학원 육종연구센터) ;
  • 명정인 (국립수산과학원 육종연구센터)
  • Published : 2009.12.31
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Abstract

Hatching rate, larval deformation and growth rate of selected olive flounder (Paralichthys olivaceus) for rapid growth were compared to those of the unselected fish. Fish were spawned on the same day and cultured under the similar conditions. The selected fish had a significantly higher eggs hatching rate, and lower larval deformation. The selected fish grew significantly faster, and at the end of the experiment (8 weeks after hatching) averaged 50.49${\pm}$2.67 mm in total length, 16.30${\pm}$0.08 mm in body height, and 1.036${\pm}$0.118 g in weight, compared to 40.55${\pm}$3.13 mm, 13.50${\pm}$0.96 mm, and 0.557${\pm}$0.073 g for unselected fish, respectively. The selected fish had a significantly higher body shape index, however lower condition factor than the unselected fish. The results of the present study demonstrate that the selected fish of the olive flounder for rapid growth had superior growth and improved body shape.

속성장 육종 넙치(selected line of olive flounder cultured, SF)의 수정란의 부화율 및 기형률, 자치어의 성장을 일반 넙치(unselected line of olive flounder cultured, UF)와 비교하였다. 동일한 날에 획득한 SF구 및 UF구 수정란의 부화율은 SF구가 96.2${\pm}$1.7%, UF구는 90.4${\pm}$2.1%로 SF구가 높았으며, 기형률은 UF가 유의하게 높았다. 이들 수정란으로부터 부화한 자어를 8주 동안 사육한 결과, 부화후 1주째에 SF 및 UF구의 전장은 각각 4.36${\pm}$0.24, 4.25${\pm}$0.20 mm였던 것이 실험 종료시에 각각 50.49${\pm}$2.67, 40.55${\pm}$3.13 mm로 SF구가 UF구에 비해 24.5% 빨랐다. 체고는 부화후 1주째에 각각 1.13${\pm}$0.08, 1.18${\pm}$0.07 mm였으며, 종료시에 각각 16.30${\pm}$0.085, 13.50${\pm}$0.96 mm로 SF가 UF구에 비해 20.7% 크게 나타났다. 실험 종료시에 체중은 각각 1.036${\pm}$0.118, 0.557${\pm}$0.073 g으로 SF구가 UF에 비해 43.0% 빨랐다. 또한 실험 종료시에 SF구와 UF구의 체형지수는 각각 0.85${\pm}$0.02, 0.82${\pm}$0.03으로 SF구가 유의하게 높았으며, 비만도는 각각 7.99${\pm}$0.33, 8.22${\pm}$0.52로 SF구가 UF구에 비해 낮았다. 이상의 결과는 속성장을 위해 선발 육종된 넙치가 일반 넙치에 비해 성장이 월등이 우수하며, 체형이 자연산 넙치에 가깝게 개선되었음을 나타내었다.

Keywords

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