creators_name: Goulet, Claude
creators_name: Beaugrand, Jacques
type: preprint
datestamp: 2001-11-30
lastmod: 2011-03-11 08:54:50
metadata_visibility: show
title: Inversion of initial dominance relationships following the interchange of roles of resident and intruder within pairs of male swordtail fish (Xiphophorus helleri)
subjects: bio-ani-behav
subjects: bio-etho
full_text_status: public
keywords: Inversion of dominance;  Prior residence; Swordtail fish; Xiphophorus helleri
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. 
date: 2001-11
date_type: published
refereed: FALSE
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citation:   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]     
document_url: http://cogprints.org/1933/3/goulet-beaugrand-inversions.pdf