菲律宾蛤仔选育群体幼虫和稚贝生长性状的选择响应  

Selection response for shell length in Manila clam (Ruditapes philippinarum) larval and juvenile

作　　者：祁剑飞[1] 巫旗生[1] 宁岳[1] 郭香[1] 郑雅友[1] 曾志南[1] 江泽贵 贾圆圆[1] QI Jianfei;WU Qisheng;NING Yue;GUO Xiang;ZHENG Yayou;ZENG Zhinan;JIANG Zegui;JIA Yuanyuan(Key laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province,Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources,Fisheries Research Institute of Fujian,Xiamen 361013,China)

机构地区：[1]福建省水产研究所福建省海洋生物增养殖与高值化利用重点实验室福建省海洋生物资源开发利用协同创新中心

出　　处：《渔业研究》2019年第5期418-423,共6页Journal of Fisheries Research

基　　金：国家贝类产业技术体系专项(CARS-49);国家科技基础条件平台建设运行资助项目“福建几种常见水生生物资源标准化整理与保存”(2016DKA30470);福建省属公益类科研院所基本科研专项(2017R1003-13)

摘　　要：为培育菲律宾蛤仔(Ruditaps philippinarum)高产新品种,采用群体选择对其壳长进行定向选育。研究比较了选育系F 2与对照组幼虫和稚贝的壳长差异,并计算了选择反应(SR)、现实遗传力(h 2 R)和遗传获得(GG)。结果表明:12、45、60和75日龄,F 2壳长均显著大于对照组(P<0.05);幼虫期SR、h 2 R和GG分别是(0.516±0.297)、(0.324±0.187)和(2.902±2.114),稚贝期分别为(0.300±0.262)、(0.188±0.164)和(9.463±8.418)。以上研究表明,对壳长的群体选育是有效的。The Manila clam(Ruditapes philippinarum),production of which was 4 million tons in 2015,is a kind of important economic shellfish in China.In order to improve the productivity traits of R.philippinarum,a mass selection program for faster growth was carried out.The shell length of the second generation of R.philippinarum breeding line were compared with the controls in larval and juvenile stage.Selection response(SR),realized heritability(h 2 R),and genetic gain(GG)were also estimated.The average selection response,realized heritability and genetic gain were(0.516±0.297),(0.324±0.187),and(2.902±2.114)during larval stage,respectively and were(0.300±0.262),(0.188±0.164),and(9.463±8.418)during juvenile stage,respectively.It is concluded that mass selection is an effective approach to improving growth traits in the stocks of R.philippinarum.

关 键 词：菲律宾蛤仔 幼虫 稚贝 选择反应 现实遗传力 遗传获得 

分 类 号：Q346[生物学—遗传学] S917.4[农业科学—水产科学]