Assessment of parental contribution and effective population size from a 3×3 diallel cross of clam Meretrix meretrix
文献类型：CNKI期刊论文
| 作者 | Dai P(代平); Wang HX(王鸿霞); Liu BZ(刘保忠)
|
| 发表日期 | 2014-03-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | effective population size(Ne) Meretrix meretrix microsatellite markers parental contribution sex ratio |
| 英文摘要 | Unbalanced parental contribution and small effective population size(N e)are common issues during the artifi cial breeding of marine bivalves.The impact of hatchery-spawning practices on parental contribution,effective population size,the N e/N ratio,and genetic diversity are largely unknown.To address this,we conducted a parentage analysis on a complete 3×3 diallel cross of clam M eretrix meretrix using eight microsatellite markers.The genetic diversity of the parents was higher than that of their respective offspring in most crosses(8/9).Sires or dams from the same family contributed unequally to the pool of offspring from a particular cross,and the same parent clam exhibited large variation in parental contribution among different crosses.The variance in male contribution was higher than that of the female contribution in most crosses,suggesting that male contribution was more skewed than for females.The N e/N ratio for nine crosses ranged from 0.58 to 0.86.There was no linear relationship between the sex ratio and the N e/N ratio(P>0.05).Moreover,a sex ratio closer to one-to-one does not necessarily mean a larger effective population size.A solution to small effective population size in commercial breeding programs is increasing broodstock numbers and attempting to maintain a balanced sex ratio. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National High Technology Research and Development Program of China(863 Program)(No.2012AA10A410) ; the Key Technology R&D Program of Jiangsu Province,China(No.BE2011372) |
| 卷 | v.32期:02页:68-77 |
| 语种 | 英文; |
| 分类号 | S917.4 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190524]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofExperimentalMarineBiology,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Dai P,Wang HX,Liu BZ. Assessment of parental contribution and effective population size from a 3×3 diallel cross of clam Meretrix meretrix. 2014. |
入库方式： OAI收割
来源：海洋研究所
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