Genetic evidence reveals temporal change in hybridization patterns in a wild baboon population

Molecular Ecology - Tập 17 Số 8 - Trang 1998-2011 - 2008
Jenny Tung1, Marie Charpentier, David Garfield, Jeanne Altmann, Susan C. Alberts
1Duke University, Durham

Tóm tắt

AbstractThe process and consequences of hybridization are of interest to evolutionary biologists because of the importance of hybridization in understanding reproductive isolation, speciation, and the influence of introgression on population genetic structure. Recent studies of hybridization have been enhanced by the advent of sensitive, genetic marker‐based techniques for inferring the degree of admixture occurring within individuals. Here we present a genetic marker‐based analysis of hybridization in a large‐bodied, long‐lived mammal over multiple generations. We analysed patterns of hybridization between yellow baboons (Papio cynocephalus) and anubis baboons (Papio anubis) in a well‐studied natural population in Amboseli National Park, Kenya, using genetic samples from 450 individuals born over the last 36 years. We assigned genetic hybrid scores based on genotypes at 14 microsatellite loci using the clustering algorithm implemented in structure 2.0, and assessed the robustness of these scores by comparison to pedigree information and through simulation. The genetic hybrid scores showed generally good agreement with previous morphological assessments of hybridity, but suggest that genetic methods may be more sensitive for identification of low levels of hybridity. The results of our analysis indicate that the proportion of hybrids in the Amboseli population has grown over time, but that the average proportion of anubis ancestry within hybrids is gradually decreasing. We argue that these patterns are probably a result of both selective and nonselective processes, including differences in the timing of life‐history events for hybrid males relative to yellow baboon males, and stochasticity in long‐distance dispersal from the source anubis population into Amboseli.

Từ khóa


Tài liệu tham khảo

10.1016/j.jhevol.2006.07.009

10.1111/j.1365-294X.2006.02917.x

10.1086/285740

10.1002/ajp.1

10.1006/anbe.2003.2106

10.1016/j.anbehav.2006.05.001

10.1002/ajhb.10157

10.1007/s00265-004-0870-x

10.1002/ajp.1350150304

10.1073/pnas.93.12.5797

10.1111/j.1558-5646.1954.tb01504.x

10.1146/annurev.es.23.110192.001321

10.1016/S0169-5347(00)88979-X

10.1046/j.1365-294x.2001.01216.x

10.1146/annurev.es.16.110185.000553

10.1046/j.1365-294x.2001.01196.x

10.1111/j.1471-8286.2005.01002.x

10.1111/j.1365-294X.2008.03724.x

10.1111/j.1365-294X.2005.02553.x

10.1126/science.256.5054.193

10.1002/evan.10121

10.1007/978-1-4899-3745-2_4

10.1002/ajpa.10021

Jolly CJ, 2007, Ecology, history and society as determinants of hybrid zone structure in baboons, American Journal of Physical Anthropology, 132, 138

Kingdon J, 1997, The Kingdon Field Guide to African Mammals

10.1111/j.1365-294X.2005.02812.x

10.1111/j.1558-5646.1966.tb03369.x

10.1073/pnas.0607662103

10.1111/j.1365-294X.2004.02308.x

Maples W, 1967, The Baboon in Medical Research, 13

Mayr E, 1942, Systematics and the Origin of Species

10.1086/409995

10.1007/BF00320408

10.1159/000155536

10.1002/ajpa.10340

10.1046/j.1365-294X.2003.01819.x

10.1046/j.1365-294X.2004.02097.x

10.1007/s10592-005-9075-8

10.1002/ajpa.1330710309

10.1046/j.1365-294X.2003.01939.x

10.1111/j.1365-294X.2004.02396.x

rDevelopment Core Team(2006)r: a language and environment for statistical computing.rFoundation for Statistical Computing Vienna Austria.

10.1146/annurev.ecolsys.27.1.83

10.1146/annurev.ecolsys.28.1.359

10.1126/science.1086949

10.1002/(SICI)1098-2345(1996)38:2<157::AID-AJP4>3.0.CO;2-Y

10.1006/geno.2000.6245

10.1046/j.0962-1083.2001.01438.x

10.1007/BF02692314

10.1007/BF02547555

10.1111/j.0014-3820.2002.tb01392.x

10.1111/j.1365-294X.2006.02995.x

10.1016/j.ympev.2003.12.014

10.1093/genetics/31.1.39

Thông tin
Thông tin xuất bản

Molecular Ecology

Tập 17 Số 8

1998-2011

Thông tin tác giả