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Updated: Jun 5, 2025

Visually Sexing Loggerhead Shrike Lanius Ludovicianus Using Plumage Coloration and Pattern
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性別選択は,納屋スワローの繁殖孤立を促す

Drew R Schield1,2, Javan K Carter1, Elizabeth S C Scordato3

  • 1Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA.

Science (New York, N.Y.)
|December 12, 2024
PubMed
まとめ

羽毛の特徴による性選択は 繁殖の孤立と遺伝的に結びついています クープリングされた性特性の位置での選択は,遺伝子フローの障壁を促進することによって,種を駆り立てる.

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Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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Females, due to their biological roles in conception, pregnancy, and nursing,...
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