Intraspecific competition reduces niche width in experimental populations
نویسندگان
چکیده
منابع مشابه
Intraspecific competition reduces niche width in experimental populations
Intraspecific competition is believed to drive niche expansion, because otherwise suboptimal resources can provide a refuge from competition for preferred resources. Competitive niche expansion is well supported by empirical observations, experiments, and theory, and is often invoked to explain phenotypic diversification within populations, some forms of speciation, and adaptive radiation. Howe...
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Theory and empirical evidence show that intraspecific competition can drive selection favouring the use of novel resources (i.e. niche expansion). The evolutionary response to such selection depends on genetic variation for resource use. However, while genetic variation might facilitate niche expansion, genetically diverse groups may also experience weaker competition, reducing density-dependen...
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Competition for resources has long been viewed as a key agent of divergent selection. Theory holds that populations facing severe intraspecific competition will tend to use a wider range of resources, possibly even using entirely novel resources that are less in demand. Yet, there have been few experimental tests of these ideas. Using the bacterial virus (bacteriophage) 6 as a model system, we ...
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ژورنال
عنوان ژورنال: Ecology and Evolution
سال: 2014
ISSN: 2045-7758,2045-7758
DOI: 10.1002/ece3.1254