Male aggressiveness and risk-taking during reproduction are repeatable but not correlated in a wild bird population
نویسندگان
چکیده
Abstract The existence of among-individual variation in behaviour within populations is poorly understood. Recent theory suggests that fine-scale individual differences investment into current versus future reproduction may lead to a ‘slow-fast’-pace-of-life continuum, also referred as the ‘pace-of-life-syndrome’ (POLS) hypothesis. According this idea, individuals are predicted differ their level risk-taking, which drive and covariation behaviours. Consistent aggression, an ecologically relevant potentially risky behaviour, have been reported across animal kingdom. Here we test whether such aggression manifestation underlying risk-taking. In wild blue tit ( Cyanistes caeruleus ) population, used standard behavioural tests investigate if male territorial aggressiveness risk-taking during breeding positively related. At start breeding, simulated conspecific intrusions obtain repeated measures aggressiveness. Subsequently, measured latency resume brood provisioning after presenting two different predators at nest: human sparrowhawk, common predator adult songbirds. First, found substantial repeatability for R = 0.56 ± 0.08 SE). Second, while males took longer presentation sparrowhawk mount compared observer, was repeatable these contexts 0.51 0.13 Finally, no evidence correlation between thereby providing little support main prediction POLS Significance statement Consistent, often correlated, basal behaviours, exploration sociability, Why consistently understood, traits would seem inherently flexible. ‘pace-of-life syndrome’ hypothesis proposes observed reflect associated with reproductive strategies. We tested idea population by investigating were more aggressive toward intruders risk when nestlings under threat predation. While consistent both behaviours not significantly correlated. Therefore, our study demonstrates tits but provides
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aDépartement de Sciences Biologiques, Université de Montréal, Pavillon Marie-Victorin, Montréal, QC, Canada b School of Psychology, University of St Andrews, St Andrews, U.K. cDepartment of Biology, McGill University, Montréal, QC, Canada dCNRS, Université de Lyon, Université Lyon 1, Department of Biometry and Evolutionary Biology, Villeurbanne, France eAnimal Ecology, Department of Ecology and...
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ژورنال
عنوان ژورنال: Behavioral Ecology and Sociobiology
سال: 2021
ISSN: ['1432-0762', '0340-5443']
DOI: https://doi.org/10.1007/s00265-021-03044-x