Admixture and diversity in West African cattle populations
- 15 October 2004
- journal article
- Published by Wiley in Molecular Ecology
- Vol. 13 (11), 3477-3487
- https://doi.org/10.1111/j.1365-294x.2004.02311.x
Abstract
We present a population genetic analysis of microsatellite variation in 16 West African cattle populations. West Africa represents a unique juxtaposition of different climatic and ecological zones in a relatively small geographical area. While more humid coastal regions are inhabited by the tsetse fly, a vector which spreads trypanosomiasis among cattle, the disease is not transmitted in the drier areas outside this zone. This is the most thorough study of genetic diversity in cattle within this area, which contains genetically important trypanotolerant Bos taurus breeds. Genetic relationships among the many breeds are examined and levels of diversity are assessed. Admixture levels were determined using a variety of methods. Ancestry informative or population‐associated alleles (PAAs) were selected using populations from India, the Near East and Europe. Multivariate analysis, the admix program and model‐based Bayesian admixture analysis approaches were also employed. These analyses reveal the direct impact of ecological factors and the profound effect of admixture on the cattle of this region. They also highlight the importance of efforts to prevent further dilution of African taurine breeds by B. indicus cattle.Keywords
This publication has 19 references indexed in Scilit:
- FAST‐TRACK: Integrating QTL mapping and genome scans towards the characterization of candidate loci under parallel selection in the lake whitefish (Coregonus clupeaformis)Molecular Ecology, 2004
- Admixture analysis of South Asian cattleHeredity, 2003
- African Pastoralism: Genetic Imprints of Origins and MigrationsScience, 2002
- Juxtaposed Microsatellite Systems as Diagnostic Markers for Admixture: Theoretical AspectsMolecular Biology and Evolution, 1999
- Mitochondrial sequence variation suggests an African influence in Portuguese cattleProceedings Of The Royal Society B-Biological Sciences, 1999
- Estimating African American Admixture Proportions by Use of Population-Specific AllelesAmerican Journal of Human Genetics, 1998
- Zebu‐taurine variation in Y chromosomal DNA: a sensitive assay for genetic introgression in West African trypanotolerant cattle populationsAnimal Genetics, 1994
- The Pulse Model: Genesis and Accommodation of Specialization in the Middle NigerThe Journal of African History, 1993
- Evolution of modern humans: evidence from nuclear DNA polymorphismsPhilosophical Transactions Of The Royal Society B-Biological Sciences, 1992
- Admixture as a tool for finding linked genes and detecting that difference from allelic association between loci.Proceedings of the National Academy of Sciences, 1988