Please use this identifier to cite or link to this item: https://doi.org/10.1111/eth.12226
Title: Post-Contest Stridulation Used Exclusively as a Victory Display in Mangrove Crabs
Authors: Chen, P.Z.
Carrasco, L.R. 
Ng, P.K.L. 
Keywords: Brachyura
Fighting
Perisesarma eumolpe
Sesarmidae
Signalling
Issue Date: 2014
Citation: Chen, P.Z., Carrasco, L.R., Ng, P.K.L. (2014). Post-Contest Stridulation Used Exclusively as a Victory Display in Mangrove Crabs. Ethology 120 (6) : 532-539. ScholarBank@NUS Repository. https://doi.org/10.1111/eth.12226
Abstract: Victory or triumph display is a post-contest signal, performed only by winners and not by losers. While much is unknown about its function, there is mounting evidence that victory displays are widespread among animals. However, evidence remains anecdotal in crabs. Sesarmid crabs belonging to the genera Parasesarma and Perisesarma are known to have characteristic stridulatory structures on their chelipeds. In Perisesarma eumolpe, a mangrove crab, stridulation has been anecdotally purported as a triumph display. We examined whether stridulation in P. eumolpe is a victory display and the factors affecting it by staging 17 contest trials among males and investigating the factors influencing stridulations and fight outcome in 55 fights. Using generalised linear mixed-effects models, we find that stridulations were generally performed by winners and after fights, especially when the fights were intense. In addition, stridulation was only observed in the context of a contest, never before or outside of it. Stridulation in P. eumolpe is likely a victory display, and, unlike other forms of victory display described for other species, it appears exclusively used for asserting victory. © 2014 Blackwell Verlag GmbH.
Source Title: Ethology
URI: http://scholarbank.nus.edu.sg/handle/10635/101433
ISSN: 14390310
DOI: 10.1111/eth.12226
Appears in Collections:Staff Publications

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