منابع مشابه
The evolution of plumage polymorphism in birds of prey and owls: the apostatic selection hypothesis revisited.
Co-evolution between phenotypic variation and other traits is of paramount importance for our understanding of the origin and maintenance of polymorphism in natural populations. We tested whether the evolution of plumage polymorphism in birds of prey and owls was supported by the apostatic selection hypothesis using ecological and life-history variables in birds of prey and owls and performing ...
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 کاملThe Evolution of Color Polymorphism: Crypticity, Searching Images, and Apostatic Selection
The development and maintenance of color polymorphism in cryptic prey species is a source of enduring fascination, in part because it appears to result from selective processes operating across multiple levels of analysis, ranging from cognitive psychology to population ecology. Since the 1960s, prey species with diverse phenotypes have been viewed as the evolved reflection of the perceptual an...
متن کاملSpatial heterogeneity, predator cognition, and the evolution of color polymorphism in virtual prey.
Cryptically colored prey species are often polymorphic, occurring in multiple distinctive pattern variants. Visual predators promote such phenotypic variation through apostatic selection, in which they attack more abundant prey types disproportionately often. In heterogeneous environments, disruptive selection to match the coloration of disparate habitat patches could also produce polymorphism,...
متن کاملTasteful and Distasteful Transactions--22 Nov 2016
Examples of tastefulness include suppressing self-promotion when one gives to charity and suppressing altruism when one is involved in business transaction. Otherwise, the acts would be judged, respectively, as self-aggrandizement and pity and, hence, distasteful. But how should we conceive tastefulness and distastefulness? Contrary to the standard economics and utilitarian approach, tastefulne...
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ژورنال
عنوان ژورنال: Heredity
سال: 1981
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1981.56