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Sinead English, Elise Huchard, Johanna F. Nielsen and Tim H. Clutton-Brock Early growth, dominance acquisition and lifetime reproductive success in male and female cooperative meerkats Ecology and Evolution 3

Version of Record online: 9 OCT 2013 | DOI: 10.1002/ece3.820

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Theory predicts that the sex with highest variance in reproductive success should be more susceptible to conditions favouring competitive traits, yet few studies have measured these effects in sexually monomorphic species. Here, we show that early growth influences later breeding success in female but not male cooperative meerkats, a sexually monomorphic species with intense female competition. Our results highlight how the link between growth and later fitness reflects the intensity of intrasexual competition and that such processes may only be revealed in studies considering several measures of growth and mass.

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