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dc.contributor.authorÓrfão, Inês
dc.contributor.authorBarbosa, Miguel
dc.contributor.authorOjanguren, Alfredo F.
dc.contributor.authorVicente, Luis
dc.contributor.authorVarela, Susana
dc.contributor.authorMagurran, Anne E.
dc.identifier.citationÓrfão , I , Barbosa , M , Ojanguren , A F , Vicente , L , Varela , S & Magurran , A E 2019 , ' Me against who? Male guppies adjust mating behaviour according to their rival’s presence and attractiveness ' , Ethology , vol. Early View , pp. 1-10 .
dc.identifier.otherPURE: 258371874
dc.identifier.otherPURE UUID: 766af2db-cc7c-4e1f-ab40-be7e0b36758d
dc.identifier.otherScopus: 85063255962
dc.identifier.otherORCID: /0000-0002-0036-2795/work/55901218
dc.identifier.otherORCID: /0000-0003-0327-9580/work/60630784
dc.identifier.otherWOS: 000467579500008
dc.descriptionThis work was supported by Portuguese National Funds through FCT (Fundação para a Ciência e a Tecnologia), within the cE3c Unit FCT funding (grant number UID/BIA/00329/2013), IO PhD grant (SFRH/BD/90686/2012) and SAMV (SFRH/BPD/66042/2009 and PTDC/BIA‐ANM/0810/14) and MB (SFRH/BPD/82259/2011) Post‐Doctoral research grants. This work was also supported by the ERC (European Research Council) AdG BioTIME (250189) to AEM.en
dc.description.abstractSexual selection theory suggests that males need to constantly reappraise their mating decisions to take account of the presence and the phenotypes of their rivals. Here we examine this expectation by asking: (i) If the presence of a rival influences male mating behaviour; (ii) How important is the attractiveness of the rival (absolute attractiveness) in shaping male behaviour; and (iii) How does a male's attractiveness in comparison to his rival (relative attractiveness) influence a male's mating decisions. Using the Trinidadian guppy, a species in which female mate choice (based on males’ attractive traits) plays an important role in male mating outcomes, we recorded the frequency of courtship displays and unsolicited attempts by focal males. First, we quantified focal male mating behaviour with and without a rival. Since the probability of a successful mating is, on average, halved by the presence of a rival, we predicted that under competition the focal male would invest more in less costly mating tactic—unsolicited attempts. Second, we examined how the rival's standard length and area of orange coloration mediated focal male mating behaviour. We found that rival presence influenced how focal males responded to females in terms of both mating tactics. However, the rival attractiveness elicited changes only in male courtship display. Focal males increased courtship display rate if his rival was small or if possessed large amounts of orange, regardless of considering rival absolute or relative attractiveness. Our results show that males invest in the costlier mating tactic when there is no rival or in the presence of a smaller rival. Interestingly, they make a similar investment in the presence of an attractive orange rival. Overall, this study highlights the importance of fine‐grained male decisions in mating encounters and shows that mating tactics are differentially shaped by multiple competition risk cues.
dc.rightsCopyright © 2019 Blackwell Verlag GmbH. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectBehavioural flexibilityen
dc.subjectBody colorationen
dc.subjectBody sizeen
dc.subjectFemale mate choiceen
dc.subjectIntrasexual competitionen
dc.subjectSocial informationen
dc.subjectQH301 Biologyen
dc.titleMe against who? Male guppies adjust mating behaviour according to their rival’s presence and attractivenessen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.contributor.institutionUniversity of St Andrews.Centre for Biological Diversityen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews.St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews.Fish Behaviour and Biodiversity Research Groupen
dc.contributor.institutionUniversity of St Andrews.Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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