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Interspecific assistance: fiddler crabs help heterospecific neighbours in territory defence

Booksmythe, Isobel; Jennions, Michael; Backwell, Patricia

Description

Theory predicts that territory owners will help established neighbours to repel intruders, when doing so is less costly than renegotiating boundaries with successful usurpers of neighbouring territories. Here, we show for the first time, to our knowledge, cooperative territory defence between heterospecific male neighbours in the fiddler crabs Uca elegans and Uca mjoebergi. We show experimentally that resident U. elegans were equally likely to help a smaller U. mjoebergi or U. elegans neighbour...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/62240
Source: Biology Letters
DOI: 10.1098/rsbl.2010.0454

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