Polygamy and purifying selection in birds

Kees Wanders; Guangji Chen; Shaohong Feng; Guojie Zhang; Tamás  Székely; Mike Bruford; Zsolt  Végvári; G. Eichhorn; Araxi Urrutia

doi:10.1093/evolut/qpac010

Polygamy and purifying selection in birds

Kees Wanders^* (Co-auteur), Guangji Chen, Shaohong Feng, Guojie Zhang, Tamás Székely, Mike Bruford, Zsolt Végvári, G. Eichhorn, Araxi Urrutia^* (Co-auteur)

^*Corresponding author voor dit werk

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgave › Artikel › Wetenschappelijk › peer review

4 Citaten (Scopus)

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Good genes theories of sexual selection predict that polygamy will be associated with more efficient removal of deleterious alleles (purifying selection), due to the alignment of sexual selection with natural selection. On the other hand, runaway selection theories expect no such alignment of natural and sexual selection, and may instead predict less efficient purifying selection in polygamous species due to higher reproductive variance. In an analysis of polymorphism data extracted from 150-bird genome assemblies, we show that polygamous species carry significantly fewer nonsynonymous polymorphisms, relative to synonymous polymorphisms, than monogamous bird species (p = .0005). We also show that this effect is independent of effective population size, consistent with the alignment of natural selection with sexual selection and “good genes” theories of sexual selection. Further analyses found no impact of polygamy on genetic diversity, while polygamy in females (polyandry) had a marginally significant impact (p = .045). We also recapitulate previous findings that smaller body mass and greater geographic range size are associated with more efficient purifying selection, more intense GC-biased gene conversion, and greater genetic diversity.

Originele taal-2	Engels
Aantal pagina's	13
Tijdschrift	Evolution; international journal of organic evolution
Vroegere onlinedatum	08 dec. 2022
DOI's	https://doi.org/10.1093/evolut/qpac010
Status	Gepubliceerd - 10 jan. 2023

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10.1093/evolut/qpac010Licentie: CC BY

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title = "Polygamy and purifying selection in birds",

abstract = "Good genes theories of sexual selection predict that polygamy will be associated with more efficient removal of deleterious alleles (purifying selection), due to the alignment of sexual selection with natural selection. On the other hand, runaway selection theories expect no such alignment of natural and sexual selection, and may instead predict less efficient purifying selection in polygamous species due to higher reproductive variance. In an analysis of polymorphism data extracted from 150-bird genome assemblies, we show that polygamous species carry significantly fewer nonsynonymous polymorphisms, relative to synonymous polymorphisms, than monogamous bird species (p = .0005). We also show that this effect is independent of effective population size, consistent with the alignment of natural selection with sexual selection and “good genes” theories of sexual selection. Further analyses found no impact of polygamy on genetic diversity, while polygamy in females (polyandry) had a marginally significant impact (p = .045). We also recapitulate previous findings that smaller body mass and greater geographic range size are associated with more efficient purifying selection, more intense GC-biased gene conversion, and greater genetic diversity.",

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AU - Wanders, Kees

AU - Chen, Guangji

AU - Feng, Shaohong

AU - Zhang, Guojie

AU - Székely, Tamás

AU - Bruford, Mike

AU - Végvári, Zsolt

AU - Eichhorn, G.

AU - Urrutia, Araxi

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AB - Good genes theories of sexual selection predict that polygamy will be associated with more efficient removal of deleterious alleles (purifying selection), due to the alignment of sexual selection with natural selection. On the other hand, runaway selection theories expect no such alignment of natural and sexual selection, and may instead predict less efficient purifying selection in polygamous species due to higher reproductive variance. In an analysis of polymorphism data extracted from 150-bird genome assemblies, we show that polygamous species carry significantly fewer nonsynonymous polymorphisms, relative to synonymous polymorphisms, than monogamous bird species (p = .0005). We also show that this effect is independent of effective population size, consistent with the alignment of natural selection with sexual selection and “good genes” theories of sexual selection. Further analyses found no impact of polygamy on genetic diversity, while polygamy in females (polyandry) had a marginally significant impact (p = .045). We also recapitulate previous findings that smaller body mass and greater geographic range size are associated with more efficient purifying selection, more intense GC-biased gene conversion, and greater genetic diversity.

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JO - Evolution; international journal of organic evolution

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Polygamy and purifying selection in birds

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