speciation

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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 ?
List of ground-based monitoring station networks with aerosol measurements: particle number concentration N, particle number size distribution (NSD), cloud condensation nucleus concentration (CCN), speciated mass concentration/composition (Comp), black carbon mass concentration (BC), and particle mass concentration less than 2.
As a result, much of the existing gap between the results for total hydrocarbons and the current speciated hydrocarbons up to [C.
were presumptively identified as per National Mastitis Council (1990) and then maintained at -70oC in trypticase soya broth with 20% glycerol in cryogenic vials until speciated.
Of these 133 NTM, 114 were fully speciated by the molecular assay; 8 could not be speciated further as the molecular assays only contain probes that allow for the detection of 40 commonly isolated NTM, and the remaining 11 represented mixed NTM species.
All enterococcal isolates (n = 1349) were verified, enumerated, speciated and the antibiotic resistance patterns determined.
All our analyses conclusively demonstrated that house dust mites have abandoned a parasitic lifestyle, secondarily becoming free-living, and then speciated in several habitats, including human habitations," University of Michigan biologists Pavel Klimov and Barry O'Connor wrote in a paper published in the journal Systematic Biology on Friday.
Washington's Environmental Biomonitoring Survey collected urine from a random sampling of the general population for both total and speciated arsenic.
0f the 52 total Basmati rice samples, two were not speciated and one had a value of As below the quantitation limit (i.
Offering images of slaughter as a public antidote to speciated violence, the film echoes the appeal to animal visibility long invoked by transnational animal rights campaigns, which suggest the potential of redress, for example, "if slaughterhouses had glass walls .
The opihi then speciated within the Hawaiian Archipelago along an ecological gradient, as they invaded deeper habitats, forming the three species that we observe today (in order from shallow to deep) 'opihi makai'auli, 'opihi 'alinalina, 'opihi ko'ele.
Mosquitoes are captured at specific geographical locations using Geographical Information System (GIS) coordinates, where they are speciated and sent to the laboratory for testing.