Effects of broken male intromittent organs on the sperm storage capacity of female earwigs, Euborellia plebeja

研究成果: Article査読

20 被引用数 (Scopus)

抄録

In earwigs of the family Anisolabididae, male intromittent organs (virgae) sometimes break off inside female sperm-storage organs (spermathecae) during mating. I examined the effects of this genital breakage on the sperm storage capacity of females using Euborellia plebeja as a representative species. When genital breakage was artificially induced in virgin females, subsequent males successfully inseminated these females. However the sperm-storage capacity of these females was limited by the presence of broken virgae in their spermathecae. In another experiment, genital breakage was experimentally induced in the spermathecae of inseminated females, and their reproductive performance was then monitored for 60 days. In all of four cases where the entire piece of the broken virga remained inside the spermatheca, females deposited fertile eggs (more than 60% hatchability). The average number of clutches, that of eggs laid, and that of hatchlings were similar to those of controls. On the other hand, females laid no eggs in the other two cases where the broken virgae protruded from the spermathecal opening. I discuss the relevance of the results to the mating system and possible removal of rival sperm, which has been reported for E. plebeja.

本文言語English
ページ(範囲)29-35
ページ数7
ジャーナルJournal of Ethology
21
1
DOI
出版ステータスPublished - 2003
外部発表はい

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 動物科学および動物学

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