Pace-of-life syndrome: linking personality, metabolism and colour ornamentation in male guppies

Jean-Guy Godin, Amélie Le Roy, Alicia Burns, Frank Seebacher & Ashley Ward
Within populations, there commonly exists consistent among-individual differences in behaviour. As a potential mechanism maintaining this variation, the pace-of-life-syndrome (POLS) hypothesis posits that consistent differences in the behaviour of individuals (i.e. ‘personality’) are intercorrelated and have coevolved with consistent individual differences in metabolism and life-history traits. Here, using adult male guppies, Poecilia reticulata, we tested under laboratory conditions (1) whether behavioural and metabolic traits vary consistently among individuals over time (≤ 7 days) and (2)...
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