Results 31 to 40 of about 7,250 (186)

Simulated ecology-driven sympatric speciation [PDF]

open access: yesPhysical Review E, 2001
11 pages, 5 figures, 1 table, uses package ...
Martins, J. S. Sa'   +2 more
openaire   +3 more sources

Evolution of blind beetles in isolated aquifers: a test of alternative modes of speciation.

open access: yesPLoS ONE, 2012
Evidence is growing that not only allopatric but also sympatric speciation can be important in the evolution of species. Sympatric speciation has most convincingly been demonstrated in laboratory experiments with bacteria, but field-based evidence is ...
Remko Leijs   +5 more
doaj   +1 more source

Genetic population structure of sympatric and allopatric populations of Baltic ciscoes (Coregonus albula complex, Teleostei, Coregonidae)

open access: yesBMC Evolutionary Biology, 2010
Background Teleost fishes of the Coregonidae are good model systems for studying postglacial evolution, adaptive radiation and ecological speciation. Of particular interest is whether the repeated occurrence of sympatric species pairs results from in ...
Nitz Barbara   +5 more
doaj   +1 more source

Hybridization, Homogamy, and Sympatric Speciation [PDF]

open access: yesEvolution, 1955
Mayr (1947) has presented a strong case against the hypothesis of sympatric speciation in the course of supporting the universal hypothesis of geographic (or at least microgeographic) speciation. In the summary (p. 286) of that paper he made the following statement: "It is unproven and unlikely that reproductive isolation can develop between contiguous
openaire   +1 more source

Description of six new species of the subgenus Panophrys within the genus Megophrys (Anura, Megophryidae) from southeastern China based on molecular and morphological data [PDF]

open access: yesZooKeys, 2019
The diversity of the subgenus Panophrys within the genus Megophrys has been revealed to be extremely underestimated from southeastern China. Herpetological surveys coupled with extensive sampling in a longitudinal mountain belt located in southeastern ...
Jian Wang   +7 more
doaj   +3 more sources

Sympatric Speciation: Why the Controversy? [PDF]

open access: yesCurrent Biology, 2006
Two recent studies provide convincing evidence that speciation without geographic isolation--sympatric speciation--has occurred within isolated island habitats, but we remain ignorant of how frequent the process really is.
openaire   +2 more sources

Ability of Current Phylogenetic Clustering to Detect Speciation History

open access: yesFrontiers in Ecology and Evolution, 2021
Phylogenetic diversity aims to quantify the evolutionary relatedness among the species comprising a community, using the phylogenetic tree as the metric of the evolutionary relationships.
Athanasios S. Kallimanis   +4 more
doaj   +1 more source

Sampling genetic diversity in the sympatrically and allopatrically speciating Midas cichlid species complex over a 16 year time series

open access: yesBMC Evolutionary Biology, 2007
Background Speciation often occurs in complex or uncertain temporal and spatial contexts. Processes such as reinforcement, allopatric divergence, and assortative mating can proceed at different rates and with different strengths as populations diverge ...
Bunje Paul ME   +2 more
doaj   +1 more source

Visual mate preference evolution during butterfly speciation is linked to neural processing genes

open access: yesNature Communications, 2020
The genetic mechanisms underlying mate choice decisions can inform our understanding of speciation. A study on Heliconius butterflies identifies 5 candidate genes that would allow sympatric species to evolve distinct preferences without altering their ...
Matteo Rossi   +7 more
doaj   +1 more source

Sympatric speciation under incompatibility selection [PDF]

open access: yesProceedings of the National Academy of Sciences, 2006
The existing theory of sympatric speciation assumes that a local population splits into two species under one-dimensional disruptive selection, which favors both of the opposite extreme values of a quantitative trait. Here we model sympatric speciation under selection that favors high values of either of the two independently inherited traits, each ...
Yael, Artzy-Randrup   +1 more
openaire   +2 more sources

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