Results 21 to 30 of about 995 (50)

The evolution of reproductive isolation in Daphnia

BMC Evolutionary Biology, 2019
Background The process by which populations evolve to become new species involves the emergence of various reproductive isolating barriers (RIB). Despite major advancements in understanding this complex process, very little is known about the order in ...
Tiffany A. Chin, Carla E. Cáceres, Melania E. Cristescu   +2 more
doaj   +1 more source

Ecological opportunity may facilitate diversification in Palearctic freshwater organisms: a case study on hydrobiid gastropods

BMC Evolutionary Biology, 2018
Background Differences in species richness among phylogenetic clades are attributed to clade age and/or variation in diversification rates. Access to ecological opportunity may trigger a temporary increase in diversification rates and ecomorphological ...
Diana Delicado, Torsten Hauffe, Thomas Wilke   +2 more
doaj   +1 more source

Genetic tests for ecological and allopatric speciation in anoles on an island archipelago. [PDF]

PLoS Genetics, 2010
From Darwin's study of the Galapagos and Wallace's study of Indonesia, islands have played an important role in evolutionary investigations, and radiations within archipelagos are readily interpreted as supporting the conventional view of allopatric ...
Roger S Thorpe, Yann Surget-Groba, Helena Johansson   +2 more
doaj   +1 more source

A Study of Hybridization Between Marmota baibacina and M. sibirica in Their Secondary Contact Zone in Mongolian Altai

Frontiers in Ecology and Evolution, 2021
The role of hybridization as one of the factors of speciation in mammals has been underestimated for a long time, but now there is a lot of data on its impact in mammalian evolution. Hybridization of species often occurs in their secondary contact zones,
Oleg V. Brandler, Svetlana Yu. Kapustina, Alexander A. Nikol’skii, Viacheslav V. Kolesnikov, Bair B. Badmaev, Yansanjav Adiya   +5 more
doaj   +1 more source

Divergent selection on opsins drives incipient speciation in Lake Victoria cichlids. [PDF]

PLoS Biology, 2006
Divergent natural selection acting on ecological traits, which also affect mate choice, is a key element of ecological speciation theory, but has not previously been demonstrated at the molecular gene level to our knowledge.
Yohey Terai, Ole Seehausen, Takeshi Sasaki, Kazuhiko Takahashi, Shinji Mizoiri, Tohru Sugawara, Tetsu Sato, Masakatsu Watanabe, Nellie Konijnendijk, Hillary D J Mrosso, Hidenori Tachida, Hiroo Imai, Yoshinori Shichida, Norihiro Okada   +13 more
doaj   +1 more source

Admixture between old lineages facilitated contemporary ecological speciation in Lake Constance stickleback

Nature Communications, 2019
Ecological speciation can proceed rapidly, but the origin of genetic variation facilitating it has remained elusive. Here, the authors show that secondary contact and introgression between deeply diverged lineages of stickleback fish facilitated rapid ...
David A. Marques, Kay Lucek, Vitor C. Sousa, Laurent Excoffier, Ole Seehausen   +4 more
doaj   +1 more source

How common is ecological speciation in plant-feeding insects? A 'Higher' Nematinae perspective

BMC Evolutionary Biology, 2010
Background Ecological speciation is a process in which a transiently resource-polymorphic species divides into two specialized sister lineages as a result of divergent selection pressures caused by the use of multiple niches or environments.
Nyman Tommi, Vikberg Veli, Smith David R, Boevé Jean-Luc   +3 more
doaj   +1 more source

Does speciation between Arabidopsis halleri and Arabidopsis lyrata coincide with major changes in a molecular target of adaptation? [PDF]

PLoS ONE, 2011
Ever since Darwin proposed natural selection as the driving force for the origin of species, the role of adaptive processes in speciation has remained controversial.
Camille Roux, Vincent Castric, Maxime Pauwels, Stephen I Wright, Pierre Saumitou-Laprade, Xavier Vekemans   +5 more
doaj   +1 more source

Genomic resequencing provides new insights into ecological diversification of four Saccharina Japonica varieties

BMC Genomics
Background  Saccharina japonica is a commercially and ecologically important seaweed and shows rapid ecological speciation. This kelp represents an excellent model for understanding the process and genetic mechanism of diversification and speciation of ...
Jie Zhang, Norishige Yotsukura, Sang-Yun Han, Alexander Jueterbock, Xiuliang Wang, Dmitry A. Galanin, Anna V. Klimova, Hwan Su Yoon, Delin Duan   +8 more
doaj   +1 more source

Microevolutionary processes impact macroevolutionary patterns

BMC Evolutionary Biology, 2018
Background Macroevolutionary modeling of species diversification plays important roles in inferring large-scale biodiversity patterns. It allows estimation of speciation and extinction rates and statistically testing their relationships with different ...
Jingchun Li, Jen-Pen Huang, Jeet Sukumaran, L. Lacey Knowles   +3 more
doaj   +1 more source