Genital coupling and copulatory wounding in drosophila teissieri (diptera: Drosophilidae)

Yoshitaka Kamimura, Hiroyuki Mitsumoto

Research output: Contribution to journalComment/debate

4 Citations (Scopus)

Abstract

We report genital coupling of Drosophila teissieri Tsacas, 1971, a member of the Drosophila melanogaster species subgroup. The species subgroup consists of nine described species including the model organism Drosophila melanogaster Meigen, 1830. Despite numerous studies on the biology of this group, our understanding of the evolutionary significance of the diversity in their genital structures is limited. This study provides evidence that (i) during the copulation, which lasts 41.1 min, a paired male genital part (dorsal branches of the basal processes of the aedeagus) open after being inserted into the female reproductive tract, (ii) female D. teissieri have a pair of pockets on the dorsal side of their genitalia that receive bifurcated spines of the male genitalia (ventral branches of the basal processes of the aedeagus), and (iii) male genital parts, especially unique strong spines of the cerci, cause multiple copulatory wounds on membranous areas of the female genitalia. Within the established phylogeny of the D. melanogaster species subgroup, we discuss possible functions of and evolutionary transitions in these genital structures.

Original languageEnglish
Pages (from-to)1437-1440
Number of pages4
JournalCanadian Journal of Zoology
Volume90
Issue number12
DOIs
Publication statusPublished - 2012 Dec 12

Keywords

  • Copulatory wounding
  • Damaging mating
  • Drosophila teissieri
  • Evolution of genitalia
  • Sexual selection
  • Transparentizing technique

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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