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Title: Genetic basis of species-specific genitalia reveals role in species diversification
Authors: Fujisawa, Tomochika
Sasabe, Masataka
Nagata, Nobuaki
Takami, Yasuoki
Sota, Teiji
Author's alias: 藤澤, 知親
雀部, 正毅
長太, 伸章
高見, 泰興
曽田, 貞滋
Issue Date: 5-Jun-2019
Publisher: American Association for the Advancement of Science (AAAS)
Journal title: Science Advances
Volume: 5
Issue: 6
Thesis number: eaav9939
Abstract: The diversity of genital morphology among closely related animals with internal fertilization is well known, but the genetic backgrounds are unclear. Here, we show that, in Carabus (Ohomopterus) beetles showing correlated evolution of male and female genital parts, only a few major quantitative trait loci (QTLs) determine differences in genital dimensions between sister species, and sequence divergence is pronounced in the genomic regions containing genital QTLs. The major QTLs for male and female genital dimensions reside in different locations within the same linkage group, implying that coevolution between the sexes is only loosely constrained and can respond to sexually antagonistic selection. The same genomic regions containing the major QTLs show elevated divergence between three pairs of parapatric species with marked differences in genital parts. Our study demonstrates that species diversification can follow coevolution of genitalia between the sexes, even without tight linkage of loci affecting male and female genital dimensions.
Description: 交尾器の進化で種が多様化することを示唆 --ゲノム研究で分かった隠れた種分化の仕組み--. 京都大学プレスリリース. 2019-07-03.
Rights: © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
DOI(Published Version): 10.1126/sciadv.aav9939
PubMed ID: 31249868
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