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Independent origins of female penis and its coevolution with male vagina in cave insects (Psocodea : Prionoglarididae)

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Title: Independent origins of female penis and its coevolution with male vagina in cave insects (Psocodea : Prionoglarididae)
Authors: Yoshizawa, Kazunori Browse this author →KAKEN DB
Ferreira, Rodrigo L. Browse this author
Yao, Izumi Browse this author →KAKEN DB
Lienhard, Charles Browse this author
Kamimura, Yoshitaka Browse this author
Keywords: genital evolution
reversed direction of sexual selection
cryptic mate choice
sexual conflict
sexually antagonistic coevolution
Issue Date: 21-Nov-2018
Publisher: Royal Society
Journal Title: Biology letters
Volume: 14
Issue: 11
Start Page: 20180533
Publisher DOI: 10.1098/rsbl.2018.0533
PMID: 30463921
Abstract: The cave-dwelling psocid tribe Sensitibillini (Afrotrogla, Neotrogla and Sensitibilla) is of special morphological and evolutionary interest because of its possession of reversed copulatory organs: i.e. females of Afrotrogla and Neotrogla have a penis-like organ. The female penis structure is highly variable among taxa, as is the case of the male penis in animals with normal copulatory organs. Here, we present the first molecular phylogeny of Sensitibillini and analyse the evolutionary pattern of their genitalia. Afrotrogla and Neotrogla did not form a monophyletic clade, and their female penis structures are significantly different, suggesting two independent origins of the female penis within Sensitibillini. In Neotrogla, the species that has a simple female penis is embedded among species that have an elaborate penis, and detailed structures of the female penis elaborations are in exact agreement among species, suggesting a secondary simplification of the female penis. A correlated evolutionary pattern between male and female genitalia was also detected. This coevolution of genitalia may suggest that sexual conflict or cryptic 'male' choice drove the diversity of the female penis, as is the case of male penile diversity in animals with conventional genitalia.
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉澤 和徳

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