Ejaculatory strategies associated with experience of losing

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Modulation of behaviours as a result of fighting experience has been observed in many animals and can influence pre-copulatory sexual selection. This study investigated how fighting experience affects ejaculatory strategies. In male flour beetles, Gnatocerus cornutus, experience of losing a fight decreases a male's aggressiveness for up to 4 days. We found that males losing a fight show increased ejaculatory investment, but there was no ejaculatory modulation owing to winning. However, the increase in ejaculate investment following a loss was no longer observed after 5 days. These results indicate that males adjust their investment in sperm competition according to their experience, and that fighting experience can significantly influence pre-and post-copulatory reproductive tactics. This journal is

Original languageEnglish
Pages (from-to)593-596
Number of pages4
JournalBiology Letters
Volume6
Issue number5
DOIs
Publication statusPublished - Oct 23 2010

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Gnatocerus cornutus
Tenebrionidae
sperm competition
Beetles
Flour
sexual selection
Spermatozoa
aggression
animals

Keywords

  • Alternative tactics
  • Phenotypic plasticity
  • Sperm competition
  • Winner and loser effects

ASJC Scopus subject areas

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

Cite this

Ejaculatory strategies associated with experience of losing. / Okada, Kensuke; Yamane, Takashi; Miyatake, Takahisa.

In: Biology Letters, Vol. 6, No. 5, 23.10.2010, p. 593-596.

Research output: Contribution to journalArticle

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