Climate Change Data Portal
DOI | 10.1073/pnas.2000388117 |
Triad hybridization via a conduit species | |
Grant P.R.; Grant B.R. | |
发表日期 | 2020 |
ISSN | 0027-8424 |
起始页码 | 7888 |
结束页码 | 7896 |
卷号 | 117期号:14 |
英文摘要 | Introgressive hybridization can affect the evolution of populations in several important ways. It may retard or reverse divergence of species, enable the development of novel traits, enhance the potential for future evolution by elevating levels of standing variation, create new species, and alleviate inbreeding depression in small populations. Most of what is known of contemporary hybridization in nature comes from the study of pairs of species, either coexisting in the same habitat or distributed parapatrically and separated by a hybrid zone. More rarely, three species form an interbreeding complex (triad), reported in vertebrates, insects, and plants. Often, one species acts as a genetic link or conduit for the passage of genes (alleles) between two others that rarely, if ever, hybridize. Demographic and genetic consequences are unknown. Here we report results of a long-term study of interbreeding Darwin's finches on Daphne Major island, Galápagos. Geospiza fortis acted as a conduit for the passage of genes between two others that have never been observed to interbreed on Daphne: Geospiza fuliginosa, a rare immigrant, and Geospiza scandens, a resident. Microsatellite gene flow from G. fortis into G. scandens increased in frequency during 30 y of favorable ecological conditions, resulting in genetic and morphological convergence. G. fortis, G. scandens, and the derived dihybrids and trihybrids experienced approximately equal fitness. Especially relevant to young adaptive radiations, where species differ principally in ecology and behavior, these findings illustrate how new combinations of genes created by hybridization among three species can enhance the potential for evolutionary change. © 2020 National Academy of Sciences. All rights reserved. |
英文关键词 | Convergence; Fitness; Introgression; Speciation; Trihybrids |
语种 | 英语 |
scopus关键词 | adaptive radiation; allele; article; Daphne; demography; ecology; finch; gene flow; genetic susceptibility; human; immigrant; insect; introgression; nonhuman; resident; species differentiation; animal; beak; breeding; evolution; genetics; growth, development and aging; hybridization; vertebrate; microsatellite DNA; Alleles; Animals; Beak; Biological Evolution; Breeding; Daphne; Finches; Hybridization, Genetic; Microsatellite Repeats; Vertebrates |
来源期刊 | Proceedings of the National Academy of Sciences of the United States of America
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/161003 |
作者单位 | Grant, P.R., Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, United States; Grant, B.R., Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, United States |
推荐引用方式 GB/T 7714 | Grant P.R.,Grant B.R.. Triad hybridization via a conduit species[J],2020,117(14). |
APA | Grant P.R.,&Grant B.R..(2020).Triad hybridization via a conduit species.Proceedings of the National Academy of Sciences of the United States of America,117(14). |
MLA | Grant P.R.,et al."Triad hybridization via a conduit species".Proceedings of the National Academy of Sciences of the United States of America 117.14(2020). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Grant P.R.]的文章 |
[Grant B.R.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Grant P.R.]的文章 |
[Grant B.R.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Grant P.R.]的文章 |
[Grant B.R.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。