Interspecific offspring killing in owls
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چکیده
منابع مشابه
Interspecific Killing among Mammalian Carnivores.
Interspecific killing among mammalian carnivores is common in nature and accounts for up to 68% of known mortalities in some species. Interactions may be symmetrical (both species kill each other) or asymmetrical (one species kills the other), and in some interactions adults of one species kill young but not adults of the other. There is a positive significant relationship between the body mass...
متن کاملDiet, morphology, and interspecific killing in carnivora.
Interspecific killing is a key determinant of the abundances and distributions of carnivores, their prey, and nonprey community members. Similarity of body size has been proposed to lead competitors to seek similar prey, which increases the likelihood of interference encounters, including lethal ones. We explored the influence of body size, diet, predatory habits, and taxonomic relatedness on i...
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Barred Owls (Strix varia) expanded their range to include western North America and have been competing with federally threatened Northern Spotted Owls (S. occidentalis caurina) for the past few decades. To help protect Spotted Owls, the US Fish and Wildlife Service is considering conducting a 3to 10-y study in which as many as 2150 to 4650 Barred Owls would be killed and, possibly, conducting ...
متن کاملDoes interspecific competition affect offspring provisioning?
Offspring size is one of the most well-studied life-history traits, yet it is remarkable that few field studies have examined the manner in which the relationship between offspring size and performance (and thus, optimal offspring size) is affected by the local environment. Furthermore, while offspring size appears to be plastic in a range of organisms, few studies have linked changes in offspr...
متن کاملPrairie dogs increase fitness by killing interspecific competitors.
Interspecific competition commonly selects for divergence in ecology, morphology or physiology, but direct observation of interspecific competition under natural conditions is difficult. Herbivorous white-tailed prairie dogs (Cynomys leucurus) employ an unusual strategy to reduce interspecific competition: they kill, but do not consume, herbivorous Wyoming ground squirrels (Urocitellus elegans)...
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ژورنال
عنوان ژورنال: Biological Journal of the Linnean Society
سال: 2008
ISSN: 0024-4066,1095-8312
DOI: 10.1111/j.1095-8312.2008.01064.x