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Inversion of initial dominance relationships following the interchange of roles of resident and intruder within pairs of male swordtail fish (Xiphophorus helleri)

Goulet, Claude and Beaugrand, Jacques (2001) Inversion of initial dominance relationships following the interchange of roles of resident and intruder within pairs of male swordtail fish (Xiphophorus helleri). [Preprint]

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Abstract

This experiment consisted of 75 different pairs composed of two male adults Xiphophorus helleri meeting each other twice. On the first occasion, one of the fish was familiarized with the meeting place for 3h (resident) while its opponent was familiarized with another aquarium (intruder). Upon dominance of one individual over the other, the pair members were separated and returned to their respective home groups for 168 hours (7 days). After this period of separation, the same pair members were reunited and met while roles had been reversed: the initial resident became the intruder, and the initial intruder was given prior-residency. Individuals in the initial resident role defeated the initial intruder in a significant majority of cases (76%). On their second meeting, the newly established dominance relationship was noted in favour of the new resident in a significant majority of cases (82%), and in a reversed direction as compared to the initially established dominance order. This shows that prior-residence is a powerful determinant of dyadic dominance outcome in Xiphophorus males when fish show minimal size differences.

Item Type:Preprint
Keywords:Inversion of dominance; Prior residence; Swordtail fish; Xiphophorus helleri
Subjects:Biology > Animal Behavior
Biology > Ethology
ID Code:1933
Deposited By:Beaugrand, Jacques
Deposited On:30 Nov 2001
Last Modified:11 Mar 2011 08:54

References in Article

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