Deleterious Effects of Restricted Gene Flow in Fragmented Populations

I examined the expected detrimental effects of restricted gene flow, a consequence of population fragmentation, through a population genetics model The model predicts the frequency of deleterious mutations and the viability of the individuals in a set of populations, depending on the number of migra...

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Bibliographic Details
Published in:Conservation biology 2002-04, Vol.16 (2), p.369-376
Main Author: Couvet, Denis
Format: Article
Language:English
Subjects:
Alleles
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Conservation biology
Conservation, protection and management of environment and wildlife
Fundamental and applied biological sciences. Psychology
Gene flow
General aspects
Genetic loci
Genetic mutation
Genetics of eukaryotes. Biological and molecular evolution
population fragmentation
Population genetics
Population genetics, reproduction patterns
Population growth
Population migration
Population size
Theories and miscellaneous
Viability
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Summary:I examined the expected detrimental effects of restricted gene flow, a consequence of population fragmentation, through a population genetics model The model predicts the frequency of deleterious mutations and the viability of the individuals in a set of populations, depending on the number of migrants per generation per population. When the number of migrants is lower than one per generation, a large increase in the viability of the individuals along with the number of migrants is expected. With one migrant per generation, detrimental genetic effects on population survival are expected for low population size or low population growth rate. Finally, the negative effects of restricted gene flow depend not only on the number of migrants entering the population considered but also on the number of migrants entering the populations where the migrants came from.
ISSN:0888-8892
1523-1739
DOI:10.1046/j.1523-1739.2002.99518.x