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

Prionoglarididae)

Kazunori Yoshizawa, Rodrigo L. Ferreira, Izumi Yao, Charles Lienhard, Yoshitaka Kamimura

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
JournalBiology Letters
Volume14
Issue number11
DOIs
Publication statusPublished - 2018 Nov 21

Fingerprint

Psocodea
penis
Penis
vagina
Vagina
coevolution
caves
Insects
insects
Genitalia
genitalia
Male Genitalia
Female Genitalia
female genitalia
Phylogeny
male genitalia
animals

Keywords

  • cryptic mate choice
  • genital evolution
  • reversed direction of sexual selection
  • sexual conflict
  • sexually antagonistic coevolution

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Agricultural and Biological Sciences(all)

Cite this

Independent origins of female penis and its coevolution with male vagina in cave insects (Psocodea : Prionoglarididae). / Yoshizawa, Kazunori; Ferreira, Rodrigo L.; Yao, Izumi; Lienhard, Charles; Kamimura, Yoshitaka.

In: Biology Letters, Vol. 14, No. 11, 21.11.2018.

Research output: Contribution to journalArticle

Yoshizawa, Kazunori ; Ferreira, Rodrigo L. ; Yao, Izumi ; Lienhard, Charles ; Kamimura, Yoshitaka. / Independent origins of female penis and its coevolution with male vagina in cave insects (Psocodea : Prionoglarididae). In: Biology Letters. 2018 ; Vol. 14, No. 11.
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