Results 41 to 50 of about 128,214 (287)

Adaptive Divergence without Distinct Species Relationships Indicate Early Stage Ecological Speciation in Species of the Rhododendronpseudochrysanthum Complex Endemic to Taiwan

Plants, 2022
The testing association of environmental variables with genetic and epigenetic variation could be crucial to deciphering the effects of environmental factors playing roles as selective drivers in ecological speciation.
Jia-Jia Cao, Yi-Shao Li, Chung-Te Chang, Jeng-Der Chung, Shih-Ying Hwang   +4 more
doaj   +1 more source

Evidence for nonallopatric speciation among closely related sympatric Heliotropium species in the Atacama Desert [PDF]

, 2013
The genetic structure of populations of closely related, sympatric species may hold the signature of the geographical mode of the speciation process.
Hilger, Hartmut H., Jacobs, Pit, Luebert, Federico, Muller, Ludo A. H.   +3 more
core   +4 more sources

Three problems in the genetics of speciation by selection

Proceedings of the National Academy of Sciences, 2022
Speciation is the process by which barriers to gene flow evolve between populations. Although we now know that speciation is largely driven by natural selection, knowledge of the agents of selection and the genetic and genomic mechanisms that facilitate divergence is required for a satisfactory theory of speciation.
Dolph Schluter, Loren H. Rieseberg
openaire   +2 more sources

Continuation of the genetic divergence of ecological speciation by spatial environmental heterogeneity in island endemic plants

Scientific Reports, 2017
Divergent selection plays a critical role not only as a speciation driver but also in maintaining post-speciation divergence. In the absence of direct evidence, ancestral interspecific gene flow between incipient species can reflect ancient selective ...
Bing-Hong Huang, Chih-Wei Huang, Chia-Lung Huang, Pei-Chun Liao   +3 more
doaj   +1 more source

Frequency-dependent selection predicts patterns of radiations and biodiversity. [PDF]

PLoS Computational Biology, 2010
Most empirical studies support a decline in speciation rates through time, although evidence for constant speciation rates also exists. Declining rates have been explained by invoking pre-existing niches, whereas constant rates have been attributed to ...
Carlos J Melián, David Alonso, Diego P Vázquez, James Regetz, Stefano Allesina   +4 more
doaj   +1 more source

(Micro)evolutionary changes and the evolutionary potential of bird migration

, 2018
Seasonal migration is the yearly long-distance movement of individuals between their breeding and wintering grounds. Individuals from nearly every animal group exhibit this behavior, but probably the most iconic migration is carried out by birds, from ...
A Helbig, A Helbig, A Johnsen, AC Perdeck, AJ Helbig, AP Møller, BM Winger, BM Winger, Butlin R et al, The Marie Curie Speciation Network, C Bell, D Schluter, DE Irwin, DL Rabosky, E Schüz, E Schüz, E Yohannes, ESC Scordato, F Pulido, F Pulido, F Pulido, G Bazzi, G Rolshausen, G Voelker, GM Hewitt, GM Hewitt, GW Cox, H Rundle, HA Hochbaum, J Belliure, J Rappole, J Rolland, JA Rönn von, JB Phillips, JC Müller, JH Brown, JH Rappole, JS Lugo Ramos, K Ruegg, KA Hobson, KE Delmore, KE Delmore, KE Delmore, KE Delmore, KE Delmore, KE Plummer, KG O’Malley, M Caprioli, M Liedvogel, M Liedvogel, M Liedvogel, M Lundberg, N Chernetsov, N Chernetsov, N Saino, N Saino, P Berthold, P Berthold, P Berthold, P Berthold, P Berthold, P Nosil, PP Marra, PR Grant, R Dor, R Dor, R Mettler, R Zink, RJ Safran, RM Zink, S Bearhop, S Lamichhaney, S Rohwer, S Zhan, T Alerstam, T Veen, TD Price, V Salewski, VL Friesen, W Wiltschko, W Wiltschko, W Wiltschko, WW Cochran   +81 more
core   +1 more source

Selection and environmental adaptation along a path to speciation in the Tibetan frog Nanorana parkeri. [PDF]

, 2018
Tibetan frogs, Nanorana parkeri, are differentiated genetically but not morphologically along geographical and elevational gradients in a challenging environment, presenting a unique opportunity to investigate processes leading to speciation. Analyses of
Che, Jing, Chen, Hong-Man, Gao, Feng, Jin, Jie-Qiong, Jin, Li, Li, Haipeng, Li, Yong-Xin, Liu, Yan-Hu, Mao, Bingyu, Murphy, Robert W, Shao, Yong, Wake, David B, Wang, Guo-Dong, Yan, Fang, Yang, He-Chuan, Zhang, Bao-Lin, Zhang, Ya-Ping, Zhang, Yaoguang, Zhou, Wei-Wei   +18 more
core   +2 more sources

DNA sequence evidence for speciation, paraphyly and a Mesozoic dispersal of cancellothyridid articulate brachiopods [PDF]

, 2002
Because the classification of extant and fossil articulate brachiopods is based largely upon shell characters observable in fossils, it identifies morphotaxa whose biological status can, in practice, best be inferred from estimates of genetic divergence.
Cohen, B.L., Luter, C.
core   +1 more source

Hybrid speciation in a marine mammal: the clymene dolphin (Stenella clymene).

PLoS ONE, 2014
Natural hybridization may result in the exchange of genetic material between divergent lineages and even the formation of new taxa. Many of the Neo-Darwinian architects argued that, particularly for animal clades, natural hybridization was maladaptive ...
Ana R Amaral, Gretchen Lovewell, Maria M Coelho, George Amato, Howard C Rosenbaum   +4 more
doaj   +1 more source

Origin and diversification of Lake Ohrid’s endemic acroloxid limpets: the role of geography and ecology [PDF]

, 2016
Background: Ancient Lake Ohrid, located on the Albania-Macedonia border, is the most biodiverse freshwater lake in Europe. However, the processes that gave rise to its extraordinary endemic biodiversity, particularly in the species-rich gastropods, are ...
Albrecht, Christian, Föller, Kirstin, Shirokaya, Alena A., Stelbrink, Björn, Wilke, Thomas   +4 more
core   +1 more source