Helpers increase long-term but not short-term productivity in cooperatively breeding long-tailed tits
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چکیده
منابع مشابه
Helpers benefit offspring in both the short and long-term in the cooperatively breeding banded mongoose.
Helpers in cooperative and communal breeding species are thought to accrue fitness benefits through improving the condition and survival of the offspring that they care for, yet few studies have shown conclusively that helpers benefit the offspring they rear. Using a novel approach to control for potentially confounding group-specific variables, I compare banded mongoose (Mungos mungo) offsprin...
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The decision of whether to divorce a breeding partner between reproductive attempts can significantly affect individual fitness. In this paper, we report that 63% of surviving pairs of long-tailed tits Aegithalos caudatus divorced between years. We examine three likely explanations for the high divorce rate in this cooperative breeder. The 'better option' hypothesis predicts that divorce and re...
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Inclusive fitness theory provides the conceptual framework for our current understanding of social evolution, and empirical studies suggest that kin selection is a critical process in the evolution of animal sociality. A key prediction of inclusive fitness theory is that altruistic behaviour evolves when the costs incurred by an altruist (c) are outweighed by the benefit to the recipient (b), w...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2004
ISSN: 1465-7279
DOI: 10.1093/beheco/arg091