Abstract

In an interesting article, Biro and Stamps [ 1 Biro P.A. Stamps J.A. Are animal personality traits linked to life-history productivity?. Trends Ecol. Evol. 2008; 23: 361-368 Abstract Full Text Full Text PDF PubMed Scopus (765) Google Scholar ] suggest that consistent individual variation in behavioural traits (animal personality) can be explained by associations with traits involved in life-history (LH) tradeoffs. Such associations would favour personality traits when individuals differ consistently in rates of biomass production through growth or reproduction (LH productivity). We agree that LH tradeoffs are likely to be important in shaping personality traits, but we suggest that correlations between personality traits and LH productivity can often vary between environments.

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