Evolution Of Diet Specialization

This in turn sets the stage for disruptive or divergent selection and may promote sympatric speciation.

Evolution of diet specialization. Given the recent discovery of multiple origins of apose. Evolution of dietary specialization and chemical defense in poison frogs dendrobatidae. We study the combined evolutionary dynamics of herbivore specialization and ecological character displacement taking into account foraging behavior of the herbivores and a quality gradient of. Coloma and d.

A comparative analysis author catherine r. A critical prediction of this diet toxicity hypothesis is that independent origins of dietary specialization will be correlated with independent origins of chemical defense. Futuyma and gabriel moreno department of ecology and evolution state university of new york at stony brook stony brook new york 11794 introduction the evolution of niche breadth or niche width was a more popular topic in the evolutionary ecological literature of the 1960s and 1970s. Adjustment of gut volume and processing thus selects for different degrees of diet specialization or opportunism and thus may promote niche diversification.

Evolution of aposematism and diversification in dendro batids caldwell 1996. Evolution of diet specialization in poison dart frogs dendrobatidae. Work for testing hypotheses on the evolution of diet specialization in the family dendrobatidae. See trade offs and specialization as an evolutionary dead end.

Distribution of the diet specialization index through the phylogeny of cuckoo species across the world by calculating the phylogenetic signal. The landmark paper for the field in the late 20th century is futuyma and moreno 1988 also see the historical overview in berenbaum 1996 the study of specialization was growing rapidly in the 1980s and condensing around a set of core hypotheses e g the trade off hypothesis the dead end hypothesis. Our data are derived from two sources. 2 produce one or more expla 2 diets evolve to become narrower see text because not.

The evolution of ecological specialization douglas j. In this paper we examine the nature and extent of diet specialization in resident and transient killer whale popu lations in coastal british columbia and contiguous waters of washington state and southeastern alaska. Finally we ran a statistical model focusing on the potential associations between diet specialization index distribution range body mass and brood parasitism in cuckoo species taking phyloge. Darst and pablo a.

1 observations of predatory events and documentation of prey species by visual means.