Last-male paternity of Euborellia plebeja, an earwig with elongated genitalia and sperm-removal behavior

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Both sexes of the earwig Euborellia plebeja (Dermaptera: Anisolabididae) mate frequently. The elongated intromittent organs of males are as long as their bodies. Previous studies have revealed that this organ is used to remove rival sperm from the female sperm-storage organ (spermatheca), the length of which is twice that of the female body. The fitness benefit of sperm removal was quantified using two mating experiments with paternity analysis. As expected, given that the sperm-removal organ is shorter than the sperm-storage organ, males gained only about 20% of paternity per single mating with sperm-saturated females. The significance of frequent repeated matings with the same female by males is discussed.

Original languageEnglish
Pages (from-to)35-41
Number of pages7
JournalJournal of Ethology
Volume23
Issue number1
DOIs
Publication statusPublished - 2005 Jan
Externally publishedYes

Fingerprint

Euborellia
Genitalia
paternity
sperm
genitalia
Spermatozoa
spermatozoa
storage organs
Dermaptera
spermatheca
earwig
removal
fitness
organ
gender

Keywords

  • Anisolabididae
  • Earwigs
  • Euborellia plebeja
  • Last male paternity
  • Multiple matings
  • Sperm competition
  • Sperm displacement
  • Sperm storage

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Behavioral Neuroscience

Cite this

Last-male paternity of Euborellia plebeja, an earwig with elongated genitalia and sperm-removal behavior. / Kamimura, Yoshitaka.

In: Journal of Ethology, Vol. 23, No. 1, 01.2005, p. 35-41.

Research output: Contribution to journalArticle

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