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Partitioning within-species variance in behaviour to within- and between-population components for understanding evolution

AuthorsGaramszegi, László Z. ; Møller, Anders P.
KeywordsPace of Life Syndromes
Life history
Bariation in behavior
Ecological plasticity
Issue Date2017
PublisherBlackwell Publishing
CitationEcology Letters 20: 599- 608 (2017)
AbstractPhenotypes vary at multiple hierarchical levels, of which the interspecific variance is the primary focus of phylogenetic comparative studies. However, the evolutionary role of particular within-species variance components (between-population, between- or within-individual variances) remains neglected. Here, we partition the variance in an anti-predator behaviour, flight initiation distance (FID), and assess how its within- and between-population variance are related to life history, distribution, dispersal and habitat ecology. Although the composition of within-species variance in FID depended on the phylogeny, most variance occurred within populations. When accounting for allometry, density-dependence, uncertainty in the phylogenetic hypothesis and heterogeneity in data quality, within-population variance was significantly associated with habitat diversity and population size. Between-population variance was a significant predictor of natal dispersal, senescence and habitat diversity. Accordingly, not only species-specific mean values of a behavioural trait, but also its variance within and among populations can shape the evolutionary ecology of species.
Identifiersdoi: 10.1111/ele.12758
issn: 1461-0248
Appears in Collections:(EBD) Artículos
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