open access

https://hdl.handle.net/2115/97988

Aggression, but Not Familiar Recognition, Occurs During Cohabitation in Females of a Hermit Crab

英語

social selection

2025-07

John Wiley & Sons

Ethology

Aggressive interactions are ubiquitous in the animal kingdom and are a key context favoring the evolution of familiar recognition. This cognitive ability has been widely reported in male crustaceans, including Pagurus hermit crabs. However, our understanding of female-female aggression and female cognitive ability remains relatively limited. Here, we describe the pattern of intrasexual aggression and assess the presence of familiar recognition in females of the hermit crab Pagurus middendorffii through two consecutive trials with 1-day's cohabitation. In the first trial, pairs of similar-sized females typically engaged in aggression using their appendages, though shell fights were rare. Following a 1-day's cohabitation, in the second trial, female behaviors did not differ between familiar (previously paired) females and unfamiliar (newly paired) females. As familiar recognition is beneficial in avoiding the associated costs of aggression, the lower frequency of energetically costly shell fights might explain the lack of evidence for familiar recognition in female P. middendorffii, as the benefits of recognizing opponents in such less intense interactions may be limited.

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: Haruka Kudo, Chiaki I. Yasuda. Aggression, but Not Familiar Recognition, Occurs During Cohabitation in Females of a Hermit Crab. Ethology. 2025, which has been published in final form at https://doi.org/10.1111/eth.70011. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

0179-1613

1439-0310

AA10516300