Sexual selection predicts species richness across the animal kingdom
Our improving knowledge of the animal tree of life consistently demonstrates that some taxa diversify more rapidly than others, but what contributes to this variation remains poorly understood. An influential hypothesis proposes that selection arising from competition for mating partners plays a key...
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Veröffentlicht in: | Proceedings of the Royal Society. B, Biological sciences Biological sciences, 2018-05, Vol.285 (1878), p.20180173-20180173 |
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container_issue | 1878 |
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container_title | Proceedings of the Royal Society. B, Biological sciences |
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creator | Janicke, Tim Ritchie, Michael G. Morrow, Edward H. Marie-Orleach, Lucas |
description | Our improving knowledge of the animal tree of life consistently demonstrates that some taxa diversify more rapidly than others, but what contributes to this variation remains poorly understood. An influential hypothesis proposes that selection arising from competition for mating partners plays a key role in promoting speciation. However, empirical evidence showing a link between proxies of this sexual selection and species richness is equivocal. Here, we collected standardized metrics of sexual selection for a broad range of animal taxa, and found that taxonomic families characterized by stronger sexual selection on males show relatively higher species richness. Thus, our data support the hypothesis that sexual selection elevates species richness. This could occur either by promoting speciation and/or by protecting species against extinction. |
doi_str_mv | 10.1098/rspb.2018.0173 |
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An influential hypothesis proposes that selection arising from competition for mating partners plays a key role in promoting speciation. However, empirical evidence showing a link between proxies of this sexual selection and species richness is equivocal. Here, we collected standardized metrics of sexual selection for a broad range of animal taxa, and found that taxonomic families characterized by stronger sexual selection on males show relatively higher species richness. Thus, our data support the hypothesis that sexual selection elevates species richness. 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subjects | Animals Bateman Gradient Bateman Principles Biological Evolution Diversification Environmental Sciences Evolution Genetic Speciation Invertebrates - genetics Invertebrates - physiology Macroevolution Mating Preference, Animal Protected species Reproductive Isolation Speciation Species Diversity Species extinction Species richness Vertebrates - genetics Vertebrates - physiology |
title | Sexual selection predicts species richness across the animal kingdom |
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