closed population


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Related to closed population: population profile

closed population

a population into which there is no gene input from outside, i.e. the only possible genetic change is through MUTATION.
References in periodicals archive ?
The Kermack-McKendrick model [8] is a SIR model (S-Susceptible, I-Infected, R-Resistance) for the number of people infected with a spreadable illness in a closed population over time.
Certain fish species, especially freshwater tiynpheas biting lakes, may comprise a large part of the group of species for which this type of study is possible because of the ability to identify closed populations and the presence of historical tissue collections.
Mathematical model for obesity in a closed population has been constructed in this paper.
The present study used the SchumacherEschmeyer method for closed populations (see Krebs, 1999 for details) to estimate and compare the population size of Aegla paulensis from a Conservation Unit (Jaragua State Park, Sao Paulo, Brazil) sampled in two periods of the year with contrasting climatic conditions (winter and summer) to verify whether the results observed by Bueno et al.
In a small closed population, inbreeding increases at a higher rate, leading to loss of alleles, which is impossible to counterbalance without migration (Wooliams, 2007).
Considering all these aspects, many honey bees relatively genetic closed population breeding programs have been elaborated, most of them using selection index mating control by instrumental insemination [13], or modern BLUP animal model approach [14].
Inquiring with your leadership, you may get several competing explanations, including a drop in new incoming features (which shifts your closed population to older files), a change in procedure that prolongs the investigation time, and customers who are negotiating more because of tough economic times.
Vaccination may also be beneficial to reduce mortality in this small, geographically closed population.
Another important clarification is that, unlike some populations studied, our system was "open" and not "closed." A closed population restricts movement in and out of the population.