منابع مشابه
Factors Influencing Progress toward Ecological Speciation
1CNRS, UMR 7205, Muséum National d’Histoire Naturelle, 45 Rue Buffon, CP50, 75005 Paris, France 2CIBIO/UP—Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, R. Monte-Crasto, 4485-661 Vairão, Portugal 3 IBE—Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, PRBB, Avenue Doctor Aiguader N88, 08003 Barcelona, Spain 4Dep...
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Although theory indicates that natural selection can facilitate speciation as a by-product, demonstrating ongoing speciation via this by-product mechanism in nature has proven difficult. We examined morphological, molecular, and behavioral data to investigate ecology's role in incipient speciation for a post-Pleistocene radiation of Bahamas mosquitofish (Gambusia hubbsi) inhabiting blue holes. ...
متن کاملGenetics and ecological speciation.
Species originate frequently by natural selection. A general mechanism by which this occurs is ecological speciation, defined as the evolution of reproductive isolation between populations as a result of ecologically-based divergent natural selection. The alternative mechanism is mutation-order speciation in which populations fix different mutations as they adapt to similar selection pressures....
متن کاملREV I EW Ecological speciation
Howard D. Rundle* and Patrik Nosil Department of Zoology and Entomology, University of Queensland, Brisbane, Queensland 4072, Australia Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada *Correspondence: E-mail: [email protected] Abstract Ecological processes are central to the formation of new species when barriers to gene flow (reproductive isolation) evo...
متن کاملSpeciation, ecological opportunity, and latitude
Evolutionary hypotheses to explain the greater numbers of species in the tropics than the temperate zone include greater age and area, higher temperature and metabolic rates, and greater ecological opportunity. These ideas make contrasting predictions about the relationship between speciation processes and latitude, which I elaborate and evaluate. Available data suggest that per capita speciati...
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ژورنال
عنوان ژورنال: Evolution
سال: 1947
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1947.tb02723.x