The new variety of Fenneropenaeus chinensis "Huanghai No.2"
The new variety of Fenneropenaeus chinensis "Huanghai No.2"
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DOI：
10.3724/sp.j.1231.2012.28183
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发表时间：
2012
影响因子：
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通讯作者：
J. Kong;Kun Luo;Sheng Luan;Qing-yin Wang;Qing-wen Zhang;Tianshi Zhang;Xianhong Meng;Weiji Wang-Weiji
中科院分区：
文献类型：
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作者：
J. Kong;Kun Luo;Sheng Luan;Qing-yin Wang;Qing-wen Zhang;Tianshi Zhang;Xianhong Meng;Weiji Wang-Weiji
“黄海1号”和“吉抗98”两个养殖群体和四个野生群体2005年采用非平衡巢式育种设计，选择中国对虾（朝鲜半岛南岸群体、乳山湾群体、青岛沿海群体和海州湾群体）为基础群体，设计了多性状复合选择方法，并应用于中国对虾遗传育种，遗传参数估计结果表明，对虾170 d体重的遗传力为0.22，对虾抗白色斑点综合征病毒存活力的遗传力为0.14，根据用BLUP法和百分比权重法估计个体的育种值所获得的信息，以生长率、WSSV抗性和存活率为指标，分别加权80%、15%和5%进行群体选择，并对育种值（BV）进行标准化，得到综合选择指数，根据选择指数值对家系进行下一代选择，根据家系信息，经四代选择，统计结果表明，每代平均遗传增益为：生长率13.56%，抗病性6.76%，成活率5.05%，体重遗传力最高，体重最大，各世代的遗传增益稳定在12%以上，但抗WSSV存活率和存活率的遗传力相对较低，遗传增益较小且不稳定（更好的生长性能，更高的存活率和感染WSSV后更长的存活时间），“黄海2号”于2009年通过国家水产品种审定委员会审定为水产养殖新品种。
Two cultured populations of "Huanghai No.1" variety and "Jikang 98" strain and four wild populations(the south coast of the Korean Peninsula population,Rushan Bay population,Qingdao coast population and Haizhou Bay population) of F.chinensis were selected as basic population via unbalanced nested breeding design in 2005.The multi-traits composite selection method was designed and applied for shrimp F.chinensis genetic breeding program,and three goal traits for growth rate,survival time and survivorship in resistance to white spot syndrome virus(WSSV) were estimated.The estimated results of genetic parameters also show that the heritabilities of the shrimps were 0.22 for body weight at 170 d,0.14 for survivorship in resistance to WSSV,0.03 for survival time.According to the information obtained from estimating the breeding value of individuals using BLUP method and the method of percentage weight,the group was selected on an index weighted 80% for growth rate,15% for WSSV resistance and 5% for survival rate.In addition the breeding values(BV) were standardized,and then aggregate selection index was obtained.The next generation of families was selected to produce based on selection index values.According to the information of Pedigree,the best mating arrangement was designed and increasing number of inbreeding coefficient was lower than 0.01.After four generations of selection,statistical results show that the genetic gains of each generation on average were 13.56% for growth rate,6.76% for disease-resistance and 5.05% for survival rate.It was revealed that the heritability of body weight was the highest and with the maximal weight,in addition,the genetic gain of each generation was steadily above 12%.However,the heritability of survivorship in resistance to WSSV and survival rate were lower relatively,and the genetic gain of each generation was less and unstable.As the first F.chinensis new variety with multi-traits(better growth performance,higher survival rate and longer survival time after WSSV infection) for extensively farming in China,"Huanghai No.2" was approved by China National Aquaculture Variety Approval Committee as a new variety for aquaculture in 2009.