Frequency dependence limits divergent evolution by favouring rare immigrants over residents

In a study using stickleback fish, negative frequency-dependent selection favours rare immigrants over common residents, weakening the effect of divergent natural selection. Rare migrants limit divergent selection Natural selection nudges populations in different environments to diverge. This is div...

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Veröffentlicht in:	Nature (London) 2017-06, Vol.546 (7657), p.285-288
Hauptverfasser:	Bolnick, Daniel I., Stutz, William E.
Format:	Artikel
Sprache:	eng
Schlagworte:	45/23 45/47 45/77 631/158 631/181 631/181/759 Abundance Acclimatization - genetics Amplification Animal Migration Animals Biodiversity Biological Evolution Biological research Body Size Divergence Divergent evolution Ecological effects Ecosystem Ecotype Ecotypes Effectiveness Evolution Female Fish Frequency dependence Genetic diversity Genetic Speciation Genetic Variation Genotype Genotypes Habitats Humanities and Social Sciences Immigrants Introduced species Lakes letter Loads (forces) Major histocompatibility complex Major Histocompatibility Complex - genetics Male Migration multidisciplinary Natural history Natural selection Noncitizens Parasites Parasites - isolation & purification Population Density Population genetics Populations Relative abundance Rivers Scales Science Selection, Genetic Smegmamorpha - anatomy & histology Smegmamorpha - genetics Smegmamorpha - parasitology Smegmamorpha - physiology Speciation Survival Survival Rate
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