Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/41453
Title: Why Did a Female Penis Evolve in a Small Group of Cave Insects?
Keywords: Afrotrogla
Genital evolution
Neotrogla
Sensitibillini
Sex‐role reversal
Sexual selection
insetos cavernícolas
Evolução genital
Reversão de papéis sexuais
Seleção sexual
Issue Date: Jun-2019
Publisher: Wiley Online Library
Citation: YOSHIZAWA, K. et al. Why Did a Female Penis Evolve in a Small Group of Cave Insects? BioEssays, [S.I.], v. 41, n. 6, Jun. 2019. https://doi.org/10.1002/bies.201900005.
Abstract: The evolution of a female penis is an extremely rare event and is only known to have occurred in a tribe of small cave insects, Sensitibillini (Psocodea: Trogiomorpha: Prionoglarididae). The female penis, which is protrudable and inserted into the male vagina‐like cavity during copulation to receive semen, is thought to have evolved independently twice in this tribe, in the Brazilian Neotrogla and the African Afrotrogla . These findings strongly suggest that there are some factors unique to Sensitibillini that have facilitated female penis evolution. Here, several hypothetical factors are presented that may have enabled the evolution of the female penis in Sensitibillini. The female–female competition for nutritious semen, the oligotrophic environment, and the twin insemination slots with switching valve are considered to be the driving factors for female penis evolution. Additionally, the following factors are considered responsible for relaxing the constraint against female penis evolution: preexistence of the female‐above mating position, the elongated duct connecting the female pre‐penis with the sperm storage organ, and the small male genital cavity accepting the female genital tubercle bearing the opening of this duct. Understanding the factors enabling female penis evolution may also shed light on the evolution of the male penis.
URI: https://onlinelibrary.wiley.com/doi/abs/10.1002/bies.201900005
http://repositorio.ufla.br/jspui/handle/1/41453
Appears in Collections:DBI - Artigos publicados em periódicos

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