• WordNet 3.6
    • n speciation the evolution of a biological species
    • ***


In literature:

Speciation of the Wandering Shrew.
"Mammals of Mesa Verde National Park, Colorado" by Sydney Anderson
Speciation of the wandering shrew.
"The Amphibians and Reptiles of Michoacán, México" by William E. Duellman
The occurrence of any physical or biotic barrier that would have separated this homogeneous group would be conducive to speciation.
"Speciation and Evolution of the Pygmy Mice, Genus Baiomys" by Robert L. Packard
San Francisco Bay as a factor influencing speciation in rodents.
"North American Jumping Mice (Genus Zapus)" by Philip H. Krutzsch
Additional remarks on the distribution of this species are in the section on Zoogeography and Speciation.
"Systematics of Megachiropteran Bats in the Solomon Islands" by Carleton J. Phillips

In news:

Our findings have implications for evolution given that socially learned mate preferences may lead to reproductive isolation, setting the stage for speciation.
The evidence is vast and diverse that speciation occurs over time and that all species have a common ancestor.

In science:

Sympatric speciation is defined as the establishment of two reproductively isolated daughter populations within the dispersal range of the parent population.
Biological Evolution and Statistical Physics
Most models of sympatric speciation, however, consider the possibly more relevant case where ecological diversification drives reproductive isolation.
Biological Evolution and Statistical Physics
Many more models and publications on sympatric speciation exist, and a good selection of references can be found in the three papers just discussed.
Biological Evolution and Statistical Physics
Such a function can be obtained if one assumes that each genus initially consists of one species, and that within a genus each species gives rise to a speciation event with a rate p, and becomes extinct with a rate q .
Biological Evolution and Statistical Physics
Next, Raup considered the survival times of genera separately for each “cohort”, and found that the data for the different cohorts scatter broadly, much more than a model with constant speciation and extinction rates would predict.
Biological Evolution and Statistical Physics