Estimation of genetic parameters for resistance to Aeromonas hydrophila in blunt snout bream (Megalobrama amblycephala)
Estimation of genetic parameters for resistance to Aeromonas hydrophila in blunt snout bream (Megalobrama amblycephala)
复制标题
钝口鳊（团头鲂）嗜水气单胞菌抗性遗传参数的估计
DOI：
10.1016/j.aquaculture.2017.07.011
复制
发表时间：
2017-10
期刊：
影响因子：
4.5
通讯作者：
Gao Ze-Xia
中科院分区：
文献类型：
--
作者：
Xiong Xue-Mei;Chen Yu-Long;Liu Li-Fang;Wang Weimin;Robinson Nicholas Andrew;Gao Ze-Xia
由嗜水气单胞菌引起的细菌性出血性疾病是对水产养殖有害的细菌性疾病之一。本研究的目的是评价抗a的遗传参数。亲水动物钝鼻鲷。对27个家庭的834只1岁幼仔进行了实验感染。hydrophila。在5天的攻毒试验期间，死亡率在感染后第2天达到高峰，整个人群的平均死亡率为83.93%（家庭平均值为97.22% ~ 22.22%）。a的遗传力。在横截面线性模型（LIN）和横截面阈值模型（THRp和THRI）下，亲水性（死亡或存活在死亡高峰时，第2天，动物模型下）差异很大，范围为0 ~ 0.33。与表型相关系数相比，抗病与生长相关性状的遗传相关系数在所有遗传参数中均较高。抗a的遗传相关性。亲水性因子体高（0.63）、体长（0.65）、体重（0.60）极显著（P< 0.01）且呈阳性；抗性与性别的相关性无统计学意义（P < 0.05）。这些结果首次报道了抗a遗传力。hydrophilainM。与体高、体长、体重3个生长相关性状的相关性可以有效地促进双头鱼的间接选择。amblycephalawith highA。hydrophilaresistance。
Bacterial hemorrhagic disease caused by Aeromonas hydrophila is one of the harmful bacterial diseases for aquaculture. The aim of this study was to evaluate the genetic parameters for resistance toA. hydrophilain blunt snout breamMegalobrama amblycephala. A total of 834 individuals at one-year old from 27 families were experimentally infected withA. hydrophila. During five days duration of the challenge test, deaths peaked at the second day after infection and average mortality over the whole population was 83.93% (family averages ranging from 97.22% to 22.22%). The heritability ofA. hydrophilaresistance (dead or alive at peak mortality, day 2, under an animal model) under cross-sectional linear (LIN), cross-sectional threshold models (THRp and THRI) was quite different, ranging from zero to 0.33. Compared with the phenotypic correlation coefficient, the genetic correlation coefficient between disease resistance and growth related traits, was relatively high for all genetic parameters. Genetic correlations of resistance toA. hydrophilawith body height (0.63), body length (0.65) and body weight (0.60) were significant (P< 0.01) and positive; however, correlations of resistance with sex was non-significant (P> 0.05). These results provide the first report for heritability of resistance toA. hydrophilainM. amblycephala, and correlation with three growth related traits (body height, body length and body weight) could efficiently facilitate indirect selection ofM. amblycephalawith highA. hydrophilaresistance.
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DOI：
10.1186/1297-9686-43-14
发表时间：
2011-03-21
期刊：
Genetics, selection, evolution : GSE
影响因子：
--
作者：
Ødegård J;Gitterle T;Madsen P;Meuwissen TH;Yazdi MH;Gjerde B;Pulgarin C;Rye M
通讯作者：
Rye M
使用基于微卫星的谱系估计钝口鳊（团头鲂）生长相关性状的遗传参数
影响因子：
2
作者：
Luo, Wei;Zeng, Cong;Gao, Zexia
通讯作者：
Gao, Zexia
DOI：
10.1186/1297-9686-29-2-145
发表时间：
1997-05-15
期刊：
Genetics, Selection, Evolution : GSE
影响因子：
--
作者：
Moreno C;Sorensen D;García-Cortés L;Varona L;Altarriba J
通讯作者：
Altarriba J
DOI：
10.1016/b978-0-12-804564-0.00002-8
发表时间：
2017
期刊：
--
影响因子：
--
作者：
N. Robinson;T. Gjedrem;E. Quillet
通讯作者：
N. Robinson;T. Gjedrem;E. Quillet
影响因子：
4.7
作者：
A. K. Nayak;B. Das;M. Kohli;S. Mukherjee
通讯作者：
A. K. Nayak;B. Das;M. Kohli;S. Mukherjee