speciation


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Related to speciation: Sympatric speciation

spe·ci·a·tion

(spē'shē-ā'shŭn),
The evolutionary process by which diverse species of animals or plants are formed from a common ancestral stock.

speciation

/spe·ci·a·tion/ (spe″se-a´shun) the evolutionary formation of new species.

speciation

(spē′shē-ā′shən, -sē-)
n.
The formation of new biological species through the process of evolution.

spe′ci·ate′ v.
spe′ci·a′tion·al adj.

spe·ci·a·tion

(spē'shē-ā'shŭn)
The evolutionary process by which diverse species of animals or plants are formed from a common ancestral stock.

speciation

the process by which new species are formed. Speciation occurs when gene flow has effectively ceased between populations where it previously existed and is brought about by ISOLATING MECHANISMS.see GEOGRAPHICAL ISOLATION.
References in periodicals archive ?
As mentioned above, one of the most controversial hypotheses of White was the stasipatric mode of speciation, largely based on his extensive studies of karyotypic differentiation in the 'viatica' group of the genus Vandiemenella (White 1978).
One conclusion of the authors is that insect shifts to different plant families have been very conservative speciation events.
The book is directed at risk assessors and regulators, to emphasize the importance of consideration of speciation which is hardly taken into consideration as a part of most hazard and risk assessments.
When considering speciation analysis by HPLC/ICP-MS, there are a number of innovations that have been incorporated over the past few years that have lead to faster, more robust, simpler analyses.
71) There is undoubtedly a correlation between the rates of speciation and chromosome rearrangement.
Paraphyly at the species level is not uncommon (Funk & Omland 2003), and may even be expected under the scenario of ecological speciation.
This is the officially recognized method for speciation, which is an advantage.
Investigating the geochemical cycling and speciation of Hg in aquatic systems is of critical importance to understanding the mechanisms responsible for its accumulation in higher trophic levels.
Sessions throughout the week included inorganic and organic speciation, methodologies for determining trace elements in complex matrices, food characterization, advanced inorganic methodology, recent requirements for reference materials, dietary supplements, food characterization, and foundations for environmental measurements.
Speciation of arsenic compounds in urine is essential for the biological monitoring of inorganic arsenic exposure.
Unfortunately, the authors do not provide data that allow one to determine whether speciation was facilitated by the examination of thick films.