| Inbreeding depression for fitness-related traits and purging the genetic load in the hermaphroditic bay scallop Argopecten irradians irradians (Mollusca: Bivalvia) | |
| Zheng, Huaiping1,2; Li, Li1; Zhang, Guofan1; Zhang, GF (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China. | |
| 2012-11-05 | |
| 发表期刊 | AQUACULTURE
 |
| ISSN | 0044-8486 |
| 卷号 | 366页码:27-33 |
| 文章类型 | Article |
| 摘要 | To investigate effects of inbreeding on the fitness related traits in the hermaphroditic bay scallop Argopecten irradians irradians, six groups of offspring with inbreeding coefficients (F) ranging from 0.041 to 0.75 were created by self-fertilization and mass-mating using parents with different inbreeding history. Fitness-related traits of hatching success, larval survival, and size in shell length at days 10, 50, and 160 were studied and compared. All fitness-related traits were significantly affected by inbreeding levels. Compared with their counterpart control of mass-mating line, the line experienced successive two generations of self-fertilization produced significantly lower inbreeding depression for almost all tested traits than those only experienced one generation of self-fertilization. Regression analysis indicated that exponential decrease in both hatching success and larval survival with F (P<0.001), both quadratic decrease in size at day 10 and day 160 with F (P<0.001), and only linear decrease in size at day 50 with F (P<0.001). The degree of phenotypic depression is predicted as that a 10% increase in F will result in a 10.48% decrease in hatching, an 11.11% decrease in survival, a 3.38% decrease in larval size at day 10, a 5.85% decrease in spat size at day 50, and a 9.50% decrease in adult size at day 160. Moreover, the present results indicate that significant purging of the genetic load has occurred after two successive-generations of selfing or severe inbreeding in this organism. These results suggest that it is possible to achieve a characteristic-stable line by successive self-fertilization in the hermaphroditic animals. (c) 2012 Elsevier B.V. All rights reserved. |
| 关键词 | Scallop Argopecten Irradians Irradians Self-fertilization Fitness Inbreeding Depression Purging |
| 学科领域 | Fisheries ; Marine & Freshwater Biology |
| DOI | 10.1016/j.aquaculture.2012.08.029 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000310572000004 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/12230 |
| 专题 | 海洋生物技术研发中心 |
| 通讯作者 | Zhang, GF (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China. |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Shantou Univ, Inst Marine Biol, Shantou 515063, Peoples R China |
| 第一作者单位 | 实验海洋生物学重点实验室 |
| 推荐引用方式 GB/T 7714 | Zheng, Huaiping,Li, Li,Zhang, Guofan,et al. Inbreeding depression for fitness-related traits and purging the genetic load in the hermaphroditic bay scallop Argopecten irradians irradians (Mollusca: Bivalvia)[J]. AQUACULTURE,2012,366:27-33. |
| APA | Zheng, Huaiping,Li, Li,Zhang, Guofan,&Zhang, GF .(2012).Inbreeding depression for fitness-related traits and purging the genetic load in the hermaphroditic bay scallop Argopecten irradians irradians (Mollusca: Bivalvia).AQUACULTURE,366,27-33. |
| MLA | Zheng, Huaiping,et al."Inbreeding depression for fitness-related traits and purging the genetic load in the hermaphroditic bay scallop Argopecten irradians irradians (Mollusca: Bivalvia)".AQUACULTURE 366(2012):27-33. |
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