“黄海1号”中国对虾体长遗传力的估计  

Estimates for the Heritability of Body Length in Shrimp Fenneropenaeus chinensis Named "Huanghai No.1"

作　　者：黄付友[1] 何玉英[1] 李健[2] 马甡[1] 王学忠 

机构地区：[1]中国海洋大学水产学院,山东青岛266003 [2]中国水产科学研究院黄海水产研究所农业部海洋渔业资源可持续利用重点开放实验室,山东青岛266071 [3]山东省昌邑市海丰水产养殖有限责任公司,山东昌邑261312

出　　处：《中国海洋大学学报（自然科学版）》2008年第2期269-274,共6页Periodical of Ocean University of China

基　　金：国家科技支撑计划项目(2006BAD01A13);国家自然科学基金项目(40706052)资助

摘　　要：应用数量遗传学原理和全同胞组内相关法估计了“黄海1号”中国对虾（Fenneropennes chinensis）孵化后3月龄和4月龄体长的遗传力。实验中的36尾亲虾均来自人工养殖的“黄海1号”第9代选育群体。通过人工授精技术，构建了9个半同胞家系和21个全同胞家系，分别测定了，3月龄和4月龄时30尾后代个体的体长。利用SPSS软件的一般线性模型（GI-M）过程，计算表型变量的方差组分，估计体长性状的遗传力。分析结果表明，“黄海1号”中国对虾3月龄和4月龄体长的狭义遗传力估计值分别在0．46～0．53和0．44～0．48之间。雌性遗传方差组分均显著大于雄性遗传方差组分（P〈0．05），说明雌性遗传方差组分存在非加性效应或受环境影响较大。另外，雌性方差组分估计的遗传力由3月龄的0．53下降到4月龄的0．48，下降程度最大，说明雌性方差组分可能存在显著的母体效应。In the study, the heritability of body length in shrimp Fenneropenaeus chinensis named ＂Huanghai No. 1＂ shrimp was estimated by means of intra group correlation of full-sibs at 3 and 4 months after hatching. A total of 36 maturing shrimp were from the ninth cultured populations of ＂Huanghai No. 1＂. Fifteen sires and twenty-one dams were mated by an artificial insemination technique. Each sire was mated from one to four dams, producing 9 half-sib families and 21 full-sib families. A random sample of 30 individuals from each family was harvested and the body length of each individual was measured at 3 and 4 months after hatching. Causal components of phenotypic variance were calculated with the GLM （General Linear Model） procedure of SPSS software. The results showed the heritabilities of body length at 3 and 4 months of age were 0.46-0.53 and 0. 44-0. 48, respectively. The dam components were greater, suggesting large non-additive genetic effects or common environment effects that could not be differentiated. A reduction in the dam component of the body length from approximately 0.53 at 3 months to 0.48 at 4 months suggested potential maternal effects that are likely to play an important role in development.

关 键 词：中国对虾 黄海1号 体长 遗传力 全同胞 

分 类 号：S917[农业科学—水产科学]