Disruptive selection and then what?

Disruptive selection occurs when extreme phenotypes have a fitness advantage over more intermediate phenotypes. The phenomenon is particularly interesting when selection keeps a population in a disruptive regime. This can lead to increased phenotypic variation while disruptive selection itself is di...

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Veröffentlicht in:Trends in ecology & evolution (Amsterdam) 2006-05, Vol.21 (5), p.238-245
Hauptverfasser: Rueffler, Claus, Van Dooren, Tom J.M., Leimar, Olof, Abrams, Peter A.
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container_title Trends in ecology & evolution (Amsterdam)
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creator Rueffler, Claus
Van Dooren, Tom J.M.
Leimar, Olof
Abrams, Peter A.
description Disruptive selection occurs when extreme phenotypes have a fitness advantage over more intermediate phenotypes. The phenomenon is particularly interesting when selection keeps a population in a disruptive regime. This can lead to increased phenotypic variation while disruptive selection itself is diminished or eliminated. Here, we review processes that increase phenotypic variation in response to disruptive selection and discuss some of the possible outcomes, such as sympatric species pairs, sexual dimorphisms, phenotypic plasticity and altered community assemblages. We also identify factors influencing the likelihoods of these different outcomes.
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subjects Adaptation, Physiological
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Biological and medical sciences
Biological Evolution
Fundamental and applied biological sciences. Psychology
General aspects
Genetic Variation
Genetics of eukaryotes. Biological and molecular evolution
Phenotype
Selection, Genetic
Sexual Behavior, Animal
title Disruptive selection and then what?
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