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Even Weak Males Help Their Neighbours: Defence Coalitions in a Fiddler Crab

Bolton, Jessica; Callander, Sophia; Jennions, Michael; Backwell, Patricia


Large male fiddler crabs sometimes help smaller neighbours to defend their territories against intruders. These coalitions occur when the helper is likely to defeat the intruder (helper larger than intruder) and the neighbour is likely to lose his territory without help (intruder larger than neighbour). Previous studies of coalitions have excluded males with regenerated claws. Such claws are weaker weapons that make the bearer competitively inferior. Here, we show that male Uca annulipes with...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Ethology
DOI: 10.1111/j.1439-0310.2011.01961.x


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