The determinants of genetic diversity in butterflies

Nature Communications
Alexander MackintoshKonrad Lohse

Abstract

Under the neutral theory, genetic diversity is expected to increase with population size. While comparative analyses have consistently failed to find strong relationships between census population size and genetic diversity, a recent study across animals identified a strong correlation between propagule size and genetic diversity, suggesting that r-strategists that produce many small offspring, have greater long-term population sizes. Here we compare genome-wide genetic diversity across 38 species of European butterflies (Papilionoidea), a group that shows little variation in reproductive strategy. We show that genetic diversity across butterflies varies over an order of magnitude and that this variation cannot be explained by differences in current abundance, propagule size, host or geographic range. Instead, neutral genetic diversity is negatively correlated with body size and positively with the length of the genetic map. This suggests that genetic diversity is determined both by differences in long-term population size and the effect of selection on linked sites.

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Citations

Jul 21, 2020·Evolutionary Applications·Pierre-Alexandre Gagnaire
Jul 14, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jurriaan M de VosKay Lucek
Feb 29, 2020·PLoS Biology·Simon H MartinRichard H Ffrench-Constant
Jun 10, 2020·Nature Ecology & Evolution·Claire R PeartJochen B W Wolf
Aug 26, 2020·Genetics·Nicolas Galtier, Marjolaine Rousselle
Oct 24, 2020·Genome Biology and Evolution·Jennifer James, Adam Eyre-Walker
Apr 15, 2020·Molecular Phylogenetics and Evolution·Gerard TalaveraNaomi E Pierce
May 7, 2021·Genetics·Nicolas Galtier, Marjolaine Rousselle
Mar 25, 2021·Genome Biology and Evolution·Jesper BomanNiclas Backström
Jul 1, 2021·Molecular Ecology·J Andrew DeWoodyJanna R Willoughby
Jul 27, 2021·Molecular Ecology·Esteban San JuanCarezza Botto-Mahan
Sep 30, 2021·Proceedings. Biological Sciences·Giulia Francesca Azzurra DonatiLoïc Pellissier
Nov 23, 2021·Evolution; International Journal of Organic Evolution·Chloé SchmidtColin J Garroway

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Methods Mentioned

BETA
RNA-seq

Software Mentioned

FlowJo
R package MCMCglmm
R package rbgif
Diva
R package

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