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- W2015463959 abstract "In small and fragmented populations, genetic diversity may be reduced owing to increased levels of drift and inbreeding. This reduced diversity is often associated with decreased fitness and a higher threat of extinction. However, it is difficult to determine when a population has low diversity except in a comparative context. We assessed genetic variability in the critically endangered Cross River gorilla (Gorilla gorilla diehli), a small and fragmented population, using 11 autosomal microsatellite loci. We show that levels of diversity in the Cross River population are not evenly distributed across the three genetically identified subpopulations, and that one centrally located subpopulation has higher levels of variability than the others. All measures of genetic variability in the Cross River population were comparable to those of the similarly small mountain gorilla (G. beringei beringei) populations (Bwindi and Virunga). However, for some measures both the Cross River and mountain gorilla populations show lower levels of diversity than a sample from a large, continuous western gorilla population (Mondika, G. gorilla gorilla). Finally, we tested for the genetic signature of a bottleneck in each of the four populations. Only Cross River showed strong evidence of a reduction in population size, suggesting that the reduction in size of this population was more recent or abrupt than in the two mountain gorilla populations. These results emphasize the need for maintaining connectivity in fragmented populations and highlight the importance of allowing small populations to expand." @default.
- W2015463959 created "2016-06-24" @default.
- W2015463959 creator A5038140076 @default.
- W2015463959 creator A5049813495 @default.
- W2015463959 creator A5088173860 @default.
- W2015463959 creator A5090931551 @default.
- W2015463959 date "2008-09-01" @default.
- W2015463959 modified "2023-10-06" @default.
- W2015463959 title "Effects of habitat fragmentation, population size and demographic history on genetic diversity: the cross river gorilla in a comparative context" @default.
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- W2015463959 doi "https://doi.org/10.1002/ajp.20559" @default.
- W2015463959 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18521886" @default.
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