Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/28337
Title: The influence of habitats on female mobility in Central and Western Africa inferred from human mitochondrial variation
Authors: Montano, Valeria
Marcari, Veronica
Pavanello, Mariano
Anyaele, Okorie
Comas, David
Destro-Bisol, Giovanni
Batini, Chiara
First Published: 29-Jan-2013
Publisher: BioMed Central Ltd
Citation: BMC Evolutionary Biology, 2013, 13:24
Abstract: Background:When studying the genetic structure of human populations, the role of cultural factors may be difficult to ascertain due to a lack of formal models. Linguistic diversity is a typical example of such a situation. Patrilocality, on the other hand, can be integrated into a biological framework, allowing the formulation of explicit working hypotheses. The present study is based on the assumption that patrilocal traditions make the hypervariable region I of the mtDNA a valuable tool for the exploration of migratory dynamics, offering the opportunity to explore the relationships between genetic and linguistic diversity. We studied 85 Niger-Congo-speaking patrilocal populations that cover regions from Senegal to Central African Republic. A total of 4175 individuals were included in the study. Results:By combining a multivariate analysis aimed at investigating the population genetic structure, with a Bayesian approach used to test models and extent of migration, we were able to detect a stepping-stone migration model as the best descriptor of gene flow across the region, with the main discontinuities corresponding to forested areas. Conclusions:Our analyses highlight an aspect of the influence of habitat variation on human genetic diversity that has yet to be understood. Rather than depending simply on geographic linear distances, patterns of female genetic variation vary substantially between savannah and rainforest environments. Our findings may be explained by the effects of recent gene flow constrained by environmental factors, which superimposes on a background shaped by pre-agricultural peopling.
DOI Link: 10.1186/1471-2148-13-24
eISSN: 1471-2148
Links: http://www.biomedcentral.com/1471-2148/13/24
http://hdl.handle.net/2381/28337
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2013 Montano et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Appears in Collections:Published Articles, Dept. of Genetics

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