收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

Genetic Variation Assessed with Microsatellites in Mass Selection Lines of the Pacific Oyster(Crassostrea gigas) in China

WANG Xubo  LI Qi  YU Hong  KONG Lingfeng  
【摘要】:Four successive mass selection lines of the Pacific oyster, Crassostrea gigas, selected for faster growth in breeding programs in China were examined at ten polymorphic microsatellite loci to assess the level of allelic diversity and estimate the effective population size. These data were compared with those of their base population. The results showed that the genetic variation of the four generations were maintained at high levels with an average allelic richness of 18.8–20.6, and a mean expected heterozygosity of 0.902–0.921. They were not reduced compared with those of their base population. Estimated effective population sizes based on temporal variances in microsatellite frequencies were smaller to that of sex ratio-corrected broodstock count estimates. Using a relatively large number of broodstock and keeping an equal sex ratio in the broodstock each generation may have contributed to retaining the original genetic diversity and maintaining relatively large effective population size. The results obtained in this study showed that the genetic variation was not affected greatly by mass selection progress and high genetic variation still existed in the mass selection lines, suggesting that there is still potential for increasing the gains in future generations of C. gigas. The present study provided important information for future genetic improvement by selective breeding, and for the design of suitable management guidelines for genetic breeding of C. gigas.

知网文化
【相似文献】
中国期刊全文数据库 前12条
1 王秋;;柱头虫(Balanoglossus gigas)积累碘[J];海洋科技资料;1978年01期
2 CHEN Xinjun;LI Jianghua;LIU Bilin;LI Gang;LU Huajie;;Fishery Biology of Jumbo Flying Squid Dosidicus gigas off Costa Rica Dome[J];Journal of Ocean University of China;2014年03期
3 刘必林;陈新军;陈勇;田思泉;李建华;方舟;杨铭霞;;Age, maturation, and population structure of the Humboldt squid Dosidicus gigas off the Peruvian Exclusive Economic Zones[J];Chinese Journal of Oceanology and Limnology;2013年01期
4 Jiang Cheng-zhe;Feng Jin-man;Zhang Jian-feng;Han IIhyun;Choung Seyoung;;Decursin Safety from Root of Angelica gigas in Rats[J];Journal of Northeast Agricultural University(English Edition);2013年04期
5 梁羡圆;我国新近引进的一种水产贝类养殖新品种——大瓶螺(Ampullaris gigas Spix)[J];海洋湖沼通报;1985年01期
6 金淼;周逸;徐亦及;唐剑波;杨文鸽;张进杰;;响应面法优化秘鲁鱿鱼(Dosidicus gigas)肌肉盐溶蛋白的提取和凝胶形成条件[J];核农学报;2013年07期
7 J.Hal Beattie;王颖洁;;日本真牡蛎(Grassostrea gigas)抗夏季死亡的育种试验[J];国外水产;1981年01期
8 周海;陈云雁;刘向东;陈建国;孙广利;;福寿螺控温越冬试验[J];天津农业科学;1991年02期
9 张继红;方建光;梁兴明;;Variations in retention efficiency of bivalves to different concentrations and organic content of suspended particles[J];Chinese Journal of Oceanology and Limnology;2010年01期
10 ;水产养殖[J];南方水产;1994年04期
11 张跃环;王昭萍;闫喜武;苏家齐;张辉;姚托;霍忠明;于瑞海;杨鹏;;香港巨牡蛎与长牡蛎种间杂交及早期杂种优势分析[J];水产学报;2012年09期
12 ;[J];;年期
中国重要会议论文全文数据库 前4条
1 ;Heterosis and allotriploid advantage between Crassostrea hongkongensis and C. gigas[A];中国动物学会·中国海洋湖沼学会贝类学分会第九次会员代表大会暨第十五次学术讨论会会议摘要集[C];2011年
2 ;Artificial interspecific hybridization between two oyster species,Crassostrea hongkongensis and C. gigas[A];中国动物学会·中国海洋湖沼学会贝类学分会第九次会员代表大会暨第十五次学术讨论会会议摘要集[C];2011年
3 ;Patterns of hybrid sterility in hybrids between Crassostrea hongkongensis and C. gigas[A];中国动物学会·中国海洋湖沼学会贝类学分会第九次会员代表大会暨第十五次学术讨论会会议摘要集[C];2011年
4 曾和期;;大瓶螺Ampullaria gigas Spix生长和饲料的初步研究[A];中国动物学会、中国海洋湖沼学会贝类学分会第三次代表大会暨第四次学术讨论会论文集[C];1988年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978