selection pressure


Also found in: Medical.

selection pressure

[si′lek·shən ‚presh·ər]
(evolution)
Those factors that influence the direction of natural selection.
References in periodicals archive ?
'We also unexpectedly found that the rotation technique, which adds increased mode-of-action diversity and reduced selection pressure on any single AI (active ingredient), was mostly ineffective at reducing cockroach populations due to cross-resistance among AIs,' the study read.
According to her, when diagnosis of malaria is parasite-based rather than presumptive, it improves patient care, avoids unnecessary antimalarial intake and reduces adverse effect of the antimalarial drug and its wastage as well as a selection pressure for drug resistance.
"It appears that there may have been strong selection pressure against or at least no selection for the presence of this version of TomLoxC early in the domestication of tomatoes," Giovannoni added.
This reduced the herbicide "workload" and lowered the selection pressure for resistant weeds.
Developed by the National Insecticide Resistance Management (NIRM) group, part of the GRDC-investment Grains Pest Advisory Committee (GPAC), the RMS aims to minimise selection pressure for resistance to the same chemical groups across consecutive generations of H.
The scientists discovered that cancer cells constantly evolve under the selection pressure of standard-of-care drugs.
It is reasonable to suppose from the foregoing that just as a selection pressure for tamability through domestication of the silver fox resulted over the generations to changes in physical and behavioral qualities altering the wild fox into a more human-friendly creature, a similar selection pressure, unique to our species, might also have been at work over the course of our evolution, bringing about the very physical and behavioral features to which Bowlby and others (Ebil-Eibesfeldt, 1970; Ebil-Eibesfeldt, 1989) have noted in the human infant.
| SELECTION PRESSURE CITY'S game at Lyon on Tuesday night is arguably more challenging than West Ham, especially after the shock home defeat in the Champions League.
However, because of the scarcity of zombie ant fossils, we can't be any more specific than that at the moment," Hughes added. "What is remarkable here is that we have shown that the complex manipulation of an animal by microbe has responded to selection pressure the climate imposes on animals and plants.
This result suggests that the selection pressure on the herd cows and the bulls that will be progenitors of the next generation can be increased in order to allow the animals of greater genetic merit for dairy traits to have a greater chance of remaining in the herd and to maximize genetic changes.
The authors said the industry must focus both on less use, and 'better use' by 'prioritizing the use of molecules that exert the weakest selection pressure'.