Genetic parameters of growth and resistance to
            <i>Polydora ciliata</i>
            in the pearl oyster
            <i>Pinctada fucata</i>

Liu, Bao-Suo; Caigang, Tan; Zhang, Dongling; Chen, Mingqiang; Zhikai, Niu; Huang, Guiju; Li, Youning; Zhang, Tianshi; Yu, Dahui

doi:10.1111/are.13036

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…In Pinctada fuctua , Liu et al. (2017) reported that genetic correlation between shell width and body weight was positive and high (0.883). In C. gigas , Wang et al.…”

Section: Discussionmentioning

confidence: 99%

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Genetic parameters of growth and survival in the Pacific oyster Crassostrea gigas

Chi

Liu

et al. 2020

Aquac. Res.

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The Pacific oyster Crassostrea gigas is a representative bivalve mollusc that is widely cultured in the world and is the largest molluscan group cultured in China. In order to assess the feasibility of improving survival of C. gigas through genetic selection, the heritability and genetic correlations for growth and survival traits between different life stages were examined. Genetic parameters were estimated based on intraclass correlations of 49 full-sib families (29 half-sib families) in larvae (4 and 20 days after fertilization) and spat (140 days after fertilization) stages. The heritability for growth traits in larvae and spat was 0.30-0.86 and 0.53-0.59, respectively, and varied with ages. The heritability of survival was low in larvae (0.13 ± 0.05 and 0.17 ± 0.04, respectively for 4 and 20 days after fertilization) but medium (0.39 ± 0.07) in spat, suggesting that selection for increasing spat survival was feasible. The genetic correlation between growth traits within age was medium to high and positive (ranging from 0.47 to 0.96, respectively, between shell length (SL) and shell height (SH) at 20 days and between SL and SH at 140 days after fertilization), suggesting that selection to improve single growth trait will cause positive response in another growth traits in C. gigas. The genetic correlations between survival and growth traits at 140 days were low but positive (ranging from 0.23 to 0.27, respectively, between survival and SH and between survival and SL at 140 days after fertilization), suggesting that selection for survival may not have a negative response in growth. Overall, this study suggests that survival traits should be taken as improving target of next selection breeding programme in C. gigas.

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“…In Pinctada fuctua , Liu et al. (2017) reported that genetic correlation between shell width and body weight was positive and high (0.883). In C. gigas , Wang et al.…”

Section: Discussionmentioning

confidence: 99%

“…The genetic correlations between growth traits have been widely reported. In Pinctada fuctua, Liu et al (2017) reported that genetic correlation between shell width and body weight was positive and high (0.883). In C. gigas, Wang et al (2012) identified positive and high (0.76) genetic correlation between SH and SL.…”

Section: Genetic and Phenotypic Correlationsmentioning

confidence: 99%