Grouping and Cooperative Breeding in the Great Slaty Woodpecker
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چکیده
منابع مشابه
Temporal variability and cooperative breeding: testing the bet-hedging hypothesis in the acorn woodpecker.
Cooperative breeding is generally considered an adaptation to ecological constraints on dispersal and independent breeding, usually due to limited breeding opportunities. Although benefits of cooperative breeding are typically thought of in terms of increased mean reproductive success, it has recently been proposed that this phenomenon may be a bet-hedging strategy that reduces variance in repr...
متن کاملVariable helper effects, ecological conditions, and the evolution of cooperative breeding in the acorn woodpecker.
The ecological conditions leading to delayed dispersal and helping behavior are generally thought to follow one of two contrasting scenarios: that conditions are stable and predictable, resulting in young being ecologically forced to remain as helpers (extrinsic constraints and the habitat saturation hypothesis), or that conditions are highly variable and unpredictable, leading to the need for ...
متن کاملCooperative behaviour in cooperative breeders: costs, benefits, and communal breeding.
In this issue, Bergmüller et al. (2007) have provided a valuable review paper, re-establishing cooperative breeding within a theoretical framework in field studies of cooperative breeding vertebrates. I am in agreement with the authors in their outlook and suggestions. In this critical review, I wish to (1) review the costs and benefits approach previously taken in the field, (2) evaluate commu...
متن کاملPromiscuity and the evolution of cooperative breeding.
Empirical data suggest that low levels of promiscuity have played a key role in the evolution of cooperative breeding and eusociality. However, from a theoretical perspective, low levels of promiscuity can favour dispersal away from the natal patch, and have been argued to select against cooperation in a way that cannot be explained by inclusive fitness theory. Here, we use an inclusive fitness...
متن کاملWhat drives cooperative breeding?
Cooperative breeding, in which more than a pair of conspecifics cooperate to raise young at a single nest or brood, is widespread among vertebrates but highly variable in its geographic distribution. Particularly vexing has been identifying the ecological correlates of this phenomenon, which has been suggested to be favored in populations inhabiting both relatively stable, productive environmen...
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ژورنال
عنوان ژورنال: The Condor
سال: 2004
ISSN: 0010-5422,1938-5129
DOI: 10.1093/condor/106.2.309