Results 151 to 160 of about 25,956 (178)

Ecological speciation by sexual selection

Journal of Theoretical Biology, 1988
Quantitative genetic models are used to investigate a mechanism of speciation involving natural and sexual selection on a population with more than one ecological niche available. Female choice of mates, based on ecologically important characters, can initiate a sudden shift into a new niche.
R, Lande, M, Kirkpatrick
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ECOLOGICAL SPECIATION IN GAMBUSIA FISHES

Evolution, 2007
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 ...
R Brian, Langerhans, Matthew E, Gifford, Everton O, Joseph   +2 more
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Adaptive radiation, nonadaptive radiation, ecological speciation and nonecological speciation

Trends in Ecology & Evolution, 2009
Radiations of ecologically and morphologically differentiated sympatric species can exhibit the pattern of a burst of diversification, which might be produced by ecological divergence between populations, together with the acquisition of reproductive isolation ('ecological speciation').
Rebecca J, Rundell, Trevor D, Price
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Ecological Speciation

2016
This chapter examines how populations in different environments can fall at different stages along a continuum of progress toward ecological speciation. It traces how variation can be used to infer ecological speciation through either of two general approaches: (1) integrated signatures of reproductive isolation based on measures of gene flow, and (2 ...
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Evidence for ecology's role in speciation

Nature, 2004
A principal challenge in testing the role of natural selection in speciation is to connect the build-up of reproductive isolation between populations to divergence of ecologically important traits. Demonstrations of 'parallel speciation', or assortative mating by selective environment, link ecology and isolation, but the phenotypic traits mediating ...
Jeffrey S, McKinnon, Seiichi, Mori, Benjamin K, Blackman, Lior, David, David M, Kingsley, Leia, Jamieson, Jennifer, Chou, Dolph, Schluter   +7 more
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The Ecological Genetics of Speciation

The American Naturalist, 2002
Ecological interactions and the natural selection they cause play a prominent causal role in biological diversification and speciation. As a discipline, ecological genetics integrates the two components of adaptive evolution (natural selection and genetic variability) to study the mechanisms of evolution.
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Chemical speciation drives hydrothermal vent ecology

Nature, 2001
The physiology and biochemistry of many taxa inhabiting deep-sea hydrothermal vents have been elucidated; however, the physicochemical factors controlling the distribution of these organisms at a given vent site remain an enigma after 20 years of research.
G W, Luther, T F, Rozan, M, Taillefert, D B, Nuzzio, C, Di Meo, T M, Shank, R A, Lutz, S C, Cary   +7 more
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Ecological Speciation in Corals

2018
The ocean is generally a homogenous environment with few geographic barriers that allow populations to connect over hundreds of kilometers, increasing gene flow and slowing down diversification and the formation of species. However, biodiversity in the ocean is vast across thousands of kilometers and even within single individuals (e.g., coral colonies)
Ana M. González, Carlos A. Prada, Viridiana Ávila, Mónica Medina   +3 more
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Ecological speciation in phytophagous insects

Entomologia Experimentalis et Applicata, 2009
AbstractDivergent natural selection has been shown to promote speciation in a wide range of taxa. For example, adaptation to different ecological environments, via divergent selection, can result in the evolution of reproductive incompatibility between populations.
Kei W. Matsubayashi, Issei Ohshima, Patrik Nosil   +2 more
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Ecology of plant speciation

TAXON, 2010
AbstractEcology affects each of the three principal processes leading to speciation: genetic differentiation among populations within species, acquisition of reproductive isolation among populations, and the rise of ecological differentiation among such populations, allowing them to coexist.
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