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Predictors of dominance rank and agonistic interactions in captive Livingstone's fruit bats

Current Zoology 2023年第6期69卷 694-702页

作者： sarah richdon Eluned Price Dominic Wormell Gareth Jones Grainne McCabe School of Biological Sciences University of Bristol24 Tyndall AvenueBristolBS81TQUK Bristol Zoological Society CliftonBristoiBS83HAUK Jersey Zoo La Profonde RueJerseyJE35BPUK

Male dominance hierarchies have been studied in many animals but rarely in bats(Chiroptera).The dominance rank of social animals may dictate access to resources and mates;therefore,it has important implications for an individual's fitness and is crucial for successful captive *** January and December 2018,at both Bristoi Zoo Gardens(Bristol,UK)and Jersey Zoo(Jersey,British Isles),we observed 19 male Livingstone's fruit bats Pteropus livingstonii using focal follows for 345 h overall,noting the outcome of all agonistic *** recorded instigators of interactions,along with winners and losers,and analyzed these data using the R-package"EloRating"to create Elo-rating temporal plots of dominance *** used generalized linear mixed models and multiple linear regression to analyze interaction data and test hypotheses regarding predictors of dominance rank,frequency of agonistic interaction,and choice of interaction *** was positively correlated with dominance rank up to around year 9,when an asymptote was *** ranked bats instigated the most agonistic interac-tions,and largely directed these interactions at bats with much lower rankings than *** were extremely stable throughout the data collection period at both *** conclude that Livingstone's fruit bats have a stable linear dominance hierarchy,with high-ranking,typ-ically older males instigating the most interactions with lowest ranking males to secure dominance *** study adds to the limited discourse on Pteropus social behaviors,indicating that some bat species may have social systems similar in complexity to some nonhuman primates.

关键词： bats Chiroptera captive Elo-rating social hierarchy

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