Hard boundaries influence African wild dogs' diet and prey selection
نویسندگان
چکیده
منابع مشابه
African Wild Dogs (lycaon Pictus) Can Subsist on Small Prey: Implications for Conservation
In mammalian predators, prey size typically increases with body size, such that most carnivores weighing .21.5 kg specialize on prey weighing 45% of their own mass. By hunting in packs, endangered African wild dogs (Lycaon pictus) are able to feed primarily on ungulates weighing .100% of their own individual mass and, in most populations, wild dogs specialize on such large prey. However, we sho...
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Increasingly, the restoration of large carnivores is proposed as a means through which to restore community structure and ecosystem function via trophic cascades. After a decades-long absence, African wild dogs (Lycaon pictus) recolonized the Laikipia Plateau in central Kenya, which we hypothesized would trigger a trophic cascade via suppression of their primary prey (dik-dik, Madoqua guentheri...
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Compared to their main competitors, African wild dogs (Lycaon pictus) have inferior competitive abilities and interspecific competition is a serious fitness-limiting factor. Lions (Panthera leo) are the dominant large carnivore in African savannah ecosystems and wild dogs avoid them both spatially and temporally. Wild dog young are particularly vulnerable and suffer high rates of mortality from...
متن کاملOptimal diet selection, frequency dependence and prey renewal.
This paper extends existing models of frequency-dependent diet selection by considering the optimal diet selection of a predator feeding upon prey populations which can be depleted but are also capable of renewal (e.g. immigration, growth, or reproduction). This model and existing models which include prey depletion, predict partial-preference and a generic diet preference for the commonest pre...
متن کاملAfrican wild dogs test the 'survival of the fittest' paradigm.
Charles Darwin first used the term 'survival of the fittest' in the 5th edition of The origin of species. A literal interpretation implies that predators will selectively prey upon the weakest members of a population. We demonstrate that this is true for African wild dogs hunting impala.
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ژورنال
عنوان ژورنال: Journal of Applied Ecology
سال: 2013
ISSN: 0021-8901
DOI: 10.1111/1365-2664.12129