Genetic Diversity–Area Relationships across Bird Species
| Autor: | Juanjuan Rao 饶娟娟, Jingwen Cao 曹静文, Haiying Fan 樊海英, Xin Lu 卢欣, Qingchen Zhang 张清臣 |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Genetic diversity education.field_of_study Habitat fragmentation Range (biology) Population 010607 zoology Biodiversity Genetic Variation Species diversity Models Theoretical Biology 010603 evolutionary biology 01 natural sciences Birds Evolutionary biology Animals Microsatellite Animal Migration Species richness education Animal Distribution Ecology Evolution Behavior and Systematics Microsatellite Repeats |
| Zdroj: | The American Naturalist. 194:736-740 |
| ISSN: | 1537-5323 0003-0147 |
| Popis: | The genetic diversity-area relationship (GAR), compared with the extensively explored species-area relationship (SAR), remains poorly recognized despite the importance of understanding it for the development and application of biodiversity theory. It has been hypothesized that maintaining genetic diversity within a population is mechanistically similar to maintaining species diversity within a community, implying that GAR trajectories should behave mathematically as SAR ones. Here we test this prediction by fitting microsatellite heterozygosity and allelic richness in relation to distribution range size across bird species against eight well-known SAR models. The Monod model best described the data on resident and migratory species combined and especially the data on resident species only, showing that with increasing range size, genetic diversity across species rapidly increased up to a certain level and then tended toward an asymptote. None of the candidate models provided an adequate fit for the data on migratory species, likely because their breeding range size mostly is large in that a GAR curve has become flat. Our work takes the first step toward formulating GARs and applying them to predicting the effect of habitat fragmentation on genetic diversity. |
| Databáze: | OpenAIRE |
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