Genetic parameter estimates for female proportion in tongue sole (Cynoglossus semilaevis)
Genetic parameter estimates for female proportion in tongue sole (Cynoglossus semilaevis)
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舌鳎（Cynoglossus semilaevis）雌性比例的遗传参数估计
DOI：
10.1016/j.aquaculture.2021.737652
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发表时间：
2021-10
期刊：
影响因子：
4.5
通讯作者：
Songlin Chen
中科院分区：
文献类型：
--
作者：
Yangzhen Li;Yuanri Hu;Yingming Yang;Jiayu Cheng;Xiangming Cheng;Songlin Chen
比目鱼是一种重要的经济鱼类，具有显著的性生长二型性，即雌性具有上级生长性能，但在养殖条件下雌性比例较低（10%~ 30%）。了解FP是否存在遗传变异是确定将这一理想性状纳入舌鳎育种目标的可行性所必需的。本研究的目的是估计FP的遗传力和FP与生长性状（体重，BW，全长，TL）之间的遗传相关性，通过使用157个全同胞家庭（涉及四年级（YC），连续三个家系世代）的16,240个个体。在幼鱼期，随机抽取各家系的鱼进行体重和总长度的测定，然后通过显微镜下观察性腺组织进行性别鉴定。所有年级的总生育率为43.8%，家庭生育率从25.4%到69.9%不等。在YC中，FP存在低但显著的遗传变异，遗传力估计值为0.02 ± 0.00（观察量表）和0.03 ± 0.01（基础量表）。在YC内，观察量表上的遗传力估计值在0.00 ± 0.00至0.08 ± 0.01之间变化，基础量表上的遗传力估计值在0.00 ± 0.00至0.04 ± 0.01之间变化。FP与BW、TL的遗传相关均为中度正相关，分别为0.46 ± 0.09和0.39 ± 0.10，差异显著（P< 0.05）。这些结果证实了FP的遗传变异的存在，并证明了通过选择育种联合改良FP和生长性状的可行性。
Tongue sole is an economically important marine flatfish with significant sexual growth dimorphism that female with superior growth performance, and phenotypic female proportion (FP) is rather low (10%–30%) under rearing conditions. Knowledge of whether genetic variation exists for FP is needed for determining the feasibility of including this desirable trait into breeding goal in tongue sole. The aims of this study were to estimate the heritability of FP and genetic correlations between FP and growth traits (body weight, BW; total length, TL) by using a population of 16,240 individuals from 157 full-sib families (involving four year-classes (YCs), three consecutive pedigreed generations). At juvenile stage, fish from each family were random sampled to measure BW and TL, and then sexed by examining gonad tissues under microscope. The overall FP was 43.8% across all year-classes, and family FP ranges from 25.4% to 69.9%. Across YCs, there was a low but significant genetic variation for FP with heritability estimates of 0.02 ± 0.00 (observed scale) and 0.03 ± 0.01 (underlying scale). Within YC, heritability estimates varied from 0.00 ± 0.00 to 0.08 ± 0.01 on observed scale, and from 0.00 ± 0.00 to 0.04 ± 0.01 on underlying scale. Genetic correlations between FP and BW, and between FP and TL were both of moderately positive magnitude, which were 0.46 ± 0.09 and 0.39 ± 0.10 respectively, and significantly different from zero (P< 0.05). These results confirm the existence of genetic variation for FP and demonstrate the feasibility of joint improvement of FP and growth traits through selective breeding.
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影响因子：
4.5
作者：
S. Wessels;G. Hörstgen-Schwark
通讯作者：
S. Wessels;G. Hörstgen-Schwark
半滑舌鳎 (Cynoglossus semilaevis) 哈维氏弧菌抗病性遗传分析
影响因子：
4.5
作者：
Li, Yangzhen;Wang, Lei;Chen, Songlin
通讯作者：
Chen, Songlin
影响因子：
2
作者：
L. Lester;K. S. Lawson;T. Abella;M. Palada
通讯作者：
L. Lester;K. S. Lawson;T. Abella;M. Palada
DOI：
10.1534/g3.116.036822
发表时间：
2017-02-09
期刊：
G3 (Bethesda, Md.)
影响因子：
--
作者：
Jiang L;Li H
通讯作者：
Li H
影响因子：
4.5
作者：
Yangzhen Li;Yuanri Hu;Yingming Yang;Weiwei Zheng;Changshan Chen;Zhongming Li
通讯作者：
Yangzhen Li;Yuanri Hu;Yingming Yang;Weiwei Zheng;Changshan Chen;Zhongming Li