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Estimation of Genetic Parameters and Reproductivity Test of Genetic Evaluation for Growth-related Traits of olive Flounder Paralichthys olivaceus at 180 Days of Age  

Kim, Hyun-Chul (Genetics and Breeding Research Center, NFRDI)
Noh, Jae-Koo (Genetics and Breeding Research Center, NFRDI)
Lee, Jeong-Ho (Genetics and Breeding Research Center, NFRDI)
Kim, Jong-Hyun (Genetics and Breeding Research Center, NFRDI)
Park, Choul-Ji (Genetics and Breeding Research Center, NFRDI)
Kang, Jung-Ha (Biotechnology Research Center, NFRDI)
Kim, Kyung-Kil (Biotechnology Research Center, NFRDI)
Lee, Jung-Gyu (Division of Applied Life Science, GyeongSang National University)
Myeong, Jeong-In (Genetics and Breeding Research Center, NFRDI)
Publication Information
Journal of Aquaculture / v.21, no.4, 2008 , pp. 317-324 More about this Journal
Abstract
This study estimated the genetic parameters and breeding values for the growth-related traits of the 1st generation produced in 2005. The heritability of body weight, total length, body height, body shape and condition factor of 180 days old olive flounders Paralichthys olivaceus, the 1st generation of selection, was estimated as 0.564, 0.590, 0.588, 0.306 and 0.332, respectively. And reproductivity of genetic evaluation for crossing superior flounders and inferior ones was tested using the subsequent generation produced in 2006 based on the breeding values of 1st generation. In the least-squares means of body weight and total length for each group of crossing, the values of crossing group between superior flounders ($S{\times}S$) showed $145.6{\pm}1.8\;g$ and $22.4{\pm}0.1\;cm$, respectively. The values of crossing group between superior and inferior flounders ($S{\times}I$) showed $133.2{\pm}2.5\;g$ and $22.1{\pm}0.1\;cm$, respectively. The values of crossing group between inferior flounders ($I{\times}I$) showed $114.0{\pm}2.1\;g$ and $21.08{\pm}0.12\;cm$, respectively. In the results, flounders are determined as appropriate selective breeding fish with the high heritability of flounders in early ages at 180 days old, and the reproductivity of genetic evaluation was also high.
Keywords
Paralichthys olivaceus; Olive flounder; Genetic parameter; Genetic evaluation;
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