Results 11 to 20 of about 7,250 (186)
Journal of Threatened Taxa, 2010 The prevailing notion is that allopatry is the main driver of divergence between populations, leading to speciation. But a number of recent studies show that speciation occurs in sympatry too, that sympatric speciation is quite common, perhaps more ...
K.K. Verma
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Sympatric speciation in structureless environments. [PDF]
BMC Evol Biol, 2016 Darwin and the architects of the Modern Synthesis found sympatric speciation difficult to explain and suggested it is unlikely to occur. Increasingly, evidence over the past few decades suggest that sympatric speciation can occur under ecological conditions that require at most intraspecific competition for a structured resource.
Getz WM +3 more
europepmc +6 more sources
On the origin of species by sympatric speciation [PDF]
Nature, 1999 Understanding speciation is a fundamental biological problem. It is believed that many species originated through allopatric divergence, where new species arise from geographically isolated populations of the same ancestral species. In contrast, the possibility of sympatric speciation (in which new species arise without geographical isolation) has ...
Dieckmann, U., Doebeli, M.
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Scientific Reports, 2022 The sibling species An. coluzzii and An. gambiae s.s. are major malaria vectors thought to be undergoing sympatric speciation with gene flow. In the absence of intrinsic post-zygotic isolation between the two taxa, speciation is thought possible through ...
Abdoulaye Niang +8 more
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Sympatric speciation revealed by genome-wide divergence in the blind mole ratSpalax [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2015 Hengwu Jiao +2 more
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Sympatric speciation by allochrony in a seabird [PDF]
Proceedings of the National Academy of Sciences, 2007 The importance of sympatric speciation (the evolution of reproductive isolation between codistributed populations) in generating biodiversity is highly controversial. Whereas potential examples of sympatric speciation exist for plants, insects, and fishes, most theoretical models suggest that it requires conditions that are ...
V L, Friesen +6 more
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Selection against accumulating mutations in niche-preference genes can drive speciation. [PDF]
PLoS ONE, 2011 Our current understanding of sympatric speciation is that it occurs primarily through disruptive selection on ecological genes driven by competition, followed by reproductive isolation through reinforcement-like selection against inferior intermediates ...
Niclas Norrström +2 more
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Sympatric speciation by sexual conflict [PDF]
Proceedings of the National Academy of Sciences, 2002 It is well established that sexual conflict can drive an endless coevolutionary chase between the sexes potentially leading to genetic divergence of isolated populations and allopatric speciation. We present a simple mathematical model that shows that sexual conflict over mating rate can result in two other general regimes.
Sergey, Gavrilets, David, Waxman
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Sympatric speciation by allochrony?
Molecular Ecology, 2022 Sympatric speciation was once thought most improbable, but careful study of some systems, particularly the apple maggot (Rhagoletis pomonella) and related Rhagoletis species has led to a re-evaluation of its likelihood. Different species and host races in this clade of flies often have highly specialized host preference, and along with frequent ...
Neil Rosser +2 more
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Repetitive DNA is Functional and Encodes Parts of the Non‐Coding RNA Repertoire
Advanced Genetics, 2022 This is a commentary on the article by Eviatar Nevo and Kexin Li entitled “Sympatric Speciation in Mole Rats and Wild Barley and Their Genome Repeatome Evolution: A Commentary”, published recently in Advanced Genetics.
James A. Shapiro
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