Stag beetle Cyclommatus mniszechi employs both mutual- and self-assessment strategies in male-male combat

Zhen Yi Chen, Chung Ping Lin, Yuying Hsu*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

Animals may base contest decisions on their fighting ability alone (self-assessment) or also their opponents’ (mutual assessment). Many male stag beetles develop disproportionately enlarged mandibles and use them as weapons. Information on their assessment strategy is limited. To investigate their assessment strategy and whether they adopt the same strategy at different stages of contests, we used food to encourage male Cyclommatus mniszechi of different (random pairings) or similar (ML-matched pairings) mandible length (ML) to interact. For the random pairings, losers had shorter mandibles than winners and were faster to feed. Overall contest duration and the tendency to escalate to tussles associated positively with winners’ ML and average ML in the random and the ML-matched pairings, respectively, consistent with self-assessment. Non-tussle phase duration associated positively with average ML in the ML-matched pairings, consistent with self-assessment. Tussle phase duration, however, positively associated with losers’ ML in the random pairings and had no association with average ML in the ML-matched pairings, consistent with mutual assessment. These results show that (1) the males employ both assessment strategies, (2) winners have more control over contest intensity than losers, and (3) males with shorter mandibles are quicker to feed and also more likely to lose fights.

原文英語
文章編號104750
期刊Behavioural Processes
202
DOIs
出版狀態已發佈 - 2022 10月

ASJC Scopus subject areas

  • 動物科學與動物學
  • 行為神經科學

指紋

深入研究「Stag beetle Cyclommatus mniszechi employs both mutual- and self-assessment strategies in male-male combat」主題。共同形成了獨特的指紋。

引用此