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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
The role of Pleistocene refugia and rivers in shaping gorilla genetic diversity in central Africa
Proceedings of the National Academy of Sciences of the United States of America, Volume 104, No. 51, Year 2007
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Description
The role of Pleistocene forest refugia and rivers in the evolutionary diversification of tropical biota has been the subject of considerable debate. A range-wide analysis of gorilla mitochondrial and nuclear variation was used to test the potential role of both refugia and rivers in shaping genetic diversity in current populations. Results reveal strong patterns of regional differentiation that are consistent with refugial hypotheses for central Africa. Four major mitochondrial haplogroups are evident with the greatest divergence between eastern (A, B) and western (C, D) gorillas. Coalescent simulations reject a model of recent east-west separation during the last glacial maximum but are consistent with a divergence time within the Pleistocene. Microsatellite data also support a similar regional pattern of population genetic structure. Signatures of demographic expansion were detected in eastern lowland (B) and Gabon/Congo (D3) mitochondrial haplogroups and are consistent with a history of postglacial expansion from formerly isolated refugia. Although most mitochondrial haplogroups are regionally defined, limited admixture is evident between neighboring haplogroups. Mantel tests reveal a significant isolation-by-distance effect among western lowland gorilla populations. However, mitochondrial genetic distances also correlate with the distance required to circumnavigate intervening rivers, indicating a possible role for rivers in partitioning gorilla genetic diversity. Comparative data are needed to evaluate the importance of both mechanisms of vicariance in other African rainforest taxa. © 2007 by The National Academy of Sciences of the USA.
Available Materials
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_104_51_20432__index.html
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_0704816105_04816Table1.pdf
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_0704816105_04816Table2.pdf
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_0704816105_04816Table3.pdf
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_0704816105_04816Fig4.pdf
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_0704816105_04816Fig5.pdf
https://efashare.b-cdn.net/share/pmc/articles/PMC2154448/bin/supp_0704816105_04816Fig6.pdf
Authors & Co-Authors
Anthony, Nicola Mary
United States, New Orleans
University of new Orleans
United Kingdom, Cardiff
College of Biomedical and Life Sciences
Johnson-Bawe, Mireille
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Jeffery, Kathryn J.
United Kingdom, Cardiff
College of Biomedical and Life Sciences
United Kingdom, Stirling
University of Stirling
Clifford, Stephen L.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Abernethy, Katharine A.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
United Kingdom, Stirling
University of Stirling
Tutin, Caroline E.G.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
United Kingdom, Stirling
University of Stirling
Lahm, Sally A.
Gabon, Libreville
Institut de Recherche en Ecologie Tropicale
White, Lee J.T.
United States, New York
Wildlife Conservation Society
Utley, John F.
United States, New Orleans
University of new Orleans
Wickings, Elisabeth Jean
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Bruford, Michael W.
United Kingdom, Cardiff
College of Biomedical and Life Sciences
Statistics
Citations: 196
Authors: 11
Affiliations: 6
Identifiers
Doi:
10.1073/pnas.0704816105
ISSN:
00278424
Research Areas
Cancer
Genetics And Genomics
Study Design
Cross Sectional Study
Study Locations
Congo
Gabon