Food Chain and Intraguild Predation
نویسندگان
چکیده
منابع مشابه
Species coexistence in a food web with intraguild predation
We studied species coexistence in a protist community consisting of a bacterial resource, five protist consumers, and an intraguild predator, Blepharisma americanum. Spatial heterogeneity was manipulated by constructing spatial arrays of interlinked bottles. In the heterogeneous treatment species were permitted to disperse naturally between bottles whereas in the homogenous treatment half the w...
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Coccinellid communities across North America have experienced significant changes in recent decades, with declines in several native species reported. One potential mechanism for these declines is interference competition via intraguild predation; specifically, increased predation of native coccinellid eggs and larvae following the introduction of exotic coccinellids. Our previous studies have ...
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Invasion of an exotic species initiated by its local introduction is considered subject to intraguild predation (IGP). Mathematically, the system dynamics is described by three nonlinear diffusion-reaction equations in two spatial dimensions. The key factors that determine successful invasion are investigated bymeans of extensive numerical simulations.The results reveal high asymmetry. An exoti...
متن کاملThe influence of vigilance on intraguild predation.
Theoretical work on intraguild predation suggests that if a top predator and an intermediate predator share prey, the system will be stable only if the intermediate predator is better at exploiting the prey, and the top predator gains significantly from consuming the intermediate predator. In mammalian carnivore systems, however, there are examples of top predator species that attack intermedia...
متن کاملIntraguild predation in raptor assemblages: a review
Intraguild predation, the killing of species that use similar resources, has been largely overlooked in raptor investigations. To help fill this gap in knowledge, we conducted a literature review, focusing on studies that tested the behavioural and demographic impact of intraguild predation on individuals, populations, and assemblages of diurnal and nocturnal raptorial species. Overall, data we...
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ژورنال
عنوان ژورنال: Journal of Pesticide Science
سال: 1996
ISSN: 1348-589X,1349-0923
DOI: 10.1584/jpestics.21.223