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KMID : 0894520090130040239
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Development & Reproduction
2009 Volume.13 No. 4 p.239 ~ p.247
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Hatching Rate of Eggs, and Growth of Larvae and Juveniles from Selected Olive Flounder, Paralichthys olivaceus
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Min Byung-Hwa
Lee Jeong-Ho
Noh Jae-Koo
Kim Hyun-Chul
Park Choul-Ji
Choi Sang-Jun
Myeong Jeong-In
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Abstract
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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±2.67 ㎜ in total length, 16.30±0.08 ㎜ in body height, and 1.036±0.118 g in weight, compared to 40.55±3.13 ㎜, 13.50±0.96 ㎜, and 0.557±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.
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KEYWORD
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Paralichthys olivaceus, Selective breeding, Hatching rate, Growth,
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