Colorful facial markings are associated with foraging rates and affiliative relationships in a wild group-living cichlid fish  

作　　者：Brett M.Culbert James B.Barnett Isaac Y.Ligocki Matthew G.Salena Marian Y.L.Wong Ian M.Hamilton Sigal Balshine 

机构地区：[1]Department of Integrative Biology,University of Guelph,Guelph,Ontario,Canada [2]Department of Psychology,Neuroscience&Behaviour,McMaster University,Hamilton,Ontario,Canada [3]Department of Evolution,Ecology,and Organismal Biology,The Ohio State University,Columbus,OH,USA [4]Department of Biology,Millersville University,Millersville,PA,USA [5]School of Earth,Atmospheric and Life Sciences,University of Wollongong,Wollongong,New South Wales,Australia [6]Department of Mathematics,The Ohio State University,Columbus,OH,USA

出　　处：《Current Zoology》2024年第1期70-78,共9页动物学报（英文版）

基　　金：supported by a Natural Sciences and Engineering Research Council of Canada(NSERC)Discovery grant provided to SB(RGPIN-2016-05772);the National Science Foundation under grant No.1557836 provided to IMH.

摘　　要：Many animals use color to signal their quality and/or behavioral motivations.Colorful signals have been well studied in the contexts of competi-tion and mate choice;however,the role of these signals in nonsexual,affiliative relationships is not as well understood.Here,we used wild social groups of the cichlid fish Neolamprologus pulcher to investigate whether the size of a brightly colored facial patch was related to 1)individual quality,2)social dominance,and/or 3)affiliative relationships.Individuals with larger patches spent more time foraging and tended to perform more aggressive acts against conspecific territory intruders.We did not find any evidence that the size of these yellow patches was related to social rank or body size,but dominant males tended to have larger patches than dominant females.Additionally,patch size had a rank-specific relationship with the number of affiliative interactions that individuals engaged in.Dominant males with large patches received fewer affiliative acts from their groupmates compared to dominant males with small patches.However,subordinates with large patches tended to receive more affiliative acts from their groupmates while performing fewer affiliative acts themselves.Taken together,our results suggest that patch size reflects interindividual variation in foraging effort in this cichlid fish and offer some of the first evidence that colorful signals may shape affiliative relationships withinwildsocialgroups.

关 键 词：affiliation FORAGING Lake Tanganyika Neolamprologus pulcher visual signals 

分 类 号：Q95[生物学—动物学]