| First Evidence for Hybrid Breakdown in the Backcross of Olive Flounder, Paralichthys olivaceus, and Summer Flounder, Paralichthys dentatus | |
| Xu, Dongdong1,2; You, Feng1; Li, Jun1; Wu, Zhihao1; Xiao, Zhizhong1; Zhang, Peijung1; Xu, Yongli1; Wang, Bo3 | |
| 2011-06-01 | |
| 发表期刊 | JOURNAL OF THE WORLD AQUACULTURE SOCIETY
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| ISSN | 0893-8849 |
| 卷号 | 42期号:3页码:347-353 |
| 文章类型 | Article |
| 摘要 | Hybrid and parental backcross experiments were performed using olive flounder, Paralichthys olivaceus, summer flounder, Paralichthys dentatus, and their female F(1) hybrids to examine hybrid fitness in the backcross. Fertilization rate, hatching rate, and combined fitness measure (CFM, product of fertilization rate and hatching rate) were detected and the results showed that the CFM of hybrid and backcross generations was reduced significantly compared to pure olive flounder crosses. Genomic inheritance from parents to backcross progeny was also detected by amplified fragment length polymorphism (AFLP). Almost all AFLP bands observed in parents were presented in backcross progeny (backcross1, 218/227; backcross2, 265/282), although 9 and 17 parental bands were missing in backcross1 and backcross2, respectively. Novel bands (absent in parents) also occurred in progeny at the frequencies of 5.63% (13/231) in backcross1 and 3.28% (9/274) in backcross2. Additionally, 27.40 and 31.18% of AFLP markers deviated from expected Mendelian ratio in backcross1 and backcross2, respectively. The present study suggests that genetic incompatibilities may exist between olive flounder and summer flounder. Furthermore, possible implications of segregation distortion for reduced hybrid fitness in backcross generations are discussed.; Hybrid and parental backcross experiments were performed using olive flounder, Paralichthys olivaceus, summer flounder, Paralichthys dentatus, and their female F(1) hybrids to examine hybrid fitness in the backcross. Fertilization rate, hatching rate, and combined fitness measure (CFM, product of fertilization rate and hatching rate) were detected and the results showed that the CFM of hybrid and backcross generations was reduced significantly compared to pure olive flounder crosses. Genomic inheritance from parents to backcross progeny was also detected by amplified fragment length polymorphism (AFLP). Almost all AFLP bands observed in parents were presented in backcross progeny (backcross1, 218/227; backcross2, 265/282), although 9 and 17 parental bands were missing in backcross1 and backcross2, respectively. Novel bands (absent in parents) also occurred in progeny at the frequencies of 5.63% (13/231) in backcross1 and 3.28% (9/274) in backcross2. Additionally, 27.40 and 31.18% of AFLP markers deviated from expected Mendelian ratio in backcross1 and backcross2, respectively. The present study suggests that genetic incompatibilities may exist between olive flounder and summer flounder. Furthermore, possible implications of segregation distortion for reduced hybrid fitness in backcross generations are discussed. |
| 学科领域 | Fisheries |
| DOI | 10.1111/j.1749-7345.2011.00473.x |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291226500008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/12017 |
| 专题 | 海洋生物技术研发中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.China & Marine Fishery Inst Zhejiang Prov, Zhoushan 316100, Peoples R China 3.SOA, Inst Oceanog 1, Qingdao, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Xu, Dongdong,You, Feng,Li, Jun,et al. First Evidence for Hybrid Breakdown in the Backcross of Olive Flounder, Paralichthys olivaceus, and Summer Flounder, Paralichthys dentatus[J]. JOURNAL OF THE WORLD AQUACULTURE SOCIETY,2011,42(3):347-353. |
| APA | Xu, Dongdong.,You, Feng.,Li, Jun.,Wu, Zhihao.,Xiao, Zhizhong.,...&Wang, Bo.(2011).First Evidence for Hybrid Breakdown in the Backcross of Olive Flounder, Paralichthys olivaceus, and Summer Flounder, Paralichthys dentatus.JOURNAL OF THE WORLD AQUACULTURE SOCIETY,42(3),347-353. |
| MLA | Xu, Dongdong,et al."First Evidence for Hybrid Breakdown in the Backcross of Olive Flounder, Paralichthys olivaceus, and Summer Flounder, Paralichthys dentatus".JOURNAL OF THE WORLD AQUACULTURE SOCIETY 42.3(2011):347-353. |
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