Parallel Sympatric Divergence Driven by Disruptive Selection Acting on a Magic Temporal Isolation Trait in a Wild Annual Fish
文献类型：期刊论文
| 作者 | Yang, Hao1,2,3; Xing, Teng-Fei1,2; Li, Yu-Long1,2; Liu, Jin-Xian1,2 |
| 刊名 | MOLECULAR ECOLOGY
 |
| 出版日期 | 2026 |
| 卷号 | 35期号:1页码:12 |
| 关键词 | disruptive selection magic trait seasonal reproduction standing genetic variation sympatric divergence |
| ISSN号 | 0962-1083 |
| DOI | 10.1111/mec.70224 |
| 通讯作者 | Liu, Jin-Xian(jinxianliu@gmail.com) |
| 英文摘要 | Sympatric speciation has long been of key interest among biologists, investigating how selection drives speciation in the absence of geographic isolation. However, the evolutionary trajectories and genetic architectures that underlie sympatric ecological divergence remain poorly understood. For the annual fish, Neosalanx brevirostris, from lakes in the Yangtze River basin, two sympatric ecotypes exhibit differences in reproductive season, with one breeding in spring and the other in autumn. Reproductive timing is considered a 'magic trait' in sympatric speciation, as it is both ecologically relevant and facilitates assortative mating. Using population genomic approaches, we investigated the genetic architecture of the adaptive sympatric divergence in reproductive season and the evolutionary forces driving this divergence by comparing two breeding ecotype pairs from two lakes and their ancestral anadromous population. Population genetic structure results provided strong evidence that sympatric ecological divergence has evolved independently and repeatedly in both lakes. Furthermore, we identified a set of genome-wide candidate adaptive SNPs, which were present as standing genetic variations in ancestral population with high frequencies, and changes of allele frequency support that disruptive natural selection, induced by intensive resource competition, drove the reproductive season divergence. These adaptive SNPs were involved in various biological functions pertinent to reproductive timing, including photosensory, circadian entrainment, temperature sensing, and hormone signalling, highlighting the complex genetic architecture underlying reproductive seasonality. These findings provide valuable insights into the evolutionary trajectories and genetic architecture in the early stages of sympatric ecological divergence and speciation. |
| WOS关键词 | SPECIATION ; POPULATION ; ASSOCIATION ; SALANGIDAE ; DIVERSITY ; FRAMEWORK ; PROGRAM ; FORMAT ; GENOME ; CDC42 |
| 资助项目 | Shandong Provincial Natural Science Foundation[ZR2024QD028] ; Shandong Provincial Natural Science Foundation[ZR2023QD121] ; National Natural Science Foundation of China[42176133] ; National Natural Science Foundation of China[32370563] |
| WOS研究方向 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001683341200014 |
| 出版者 | WILEY |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204697]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Liu, Jin-Xian |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Hao,Xing, Teng-Fei,Li, Yu-Long,et al. Parallel Sympatric Divergence Driven by Disruptive Selection Acting on a Magic Temporal Isolation Trait in a Wild Annual Fish[J]. MOLECULAR ECOLOGY,2026,35(1):12. |
| APA | Yang, Hao,Xing, Teng-Fei,Li, Yu-Long,&Liu, Jin-Xian.(2026).Parallel Sympatric Divergence Driven by Disruptive Selection Acting on a Magic Temporal Isolation Trait in a Wild Annual Fish.MOLECULAR ECOLOGY,35(1),12. |
| MLA | Yang, Hao,et al."Parallel Sympatric Divergence Driven by Disruptive Selection Acting on a Magic Temporal Isolation Trait in a Wild Annual Fish".MOLECULAR ECOLOGY 35.1(2026):12. |
入库方式： OAI收割
来源：海洋研究所
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