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Titolo:
Patterns of population subdivision, gene flow and genetic variability in the African wild dog (Lycaon pictus)
Autore:
Girman, DJ; Vila, C; Geffen, E; Creel, S; Mills, MGL; McNutt, JW; Ginsberg, J; Kat, PW; Mimiya, KH; Wayne, RK;
Indirizzi:
Univ Calif Los Angeles, Dept Organism Biol Ecol & Evolut, Los Angeles, CA 90095 USA Univ Calif Los Angeles Los Angeles CA USA 90095 Los Angeles, CA 90095 USA Sonoma State Univ, Dept Biol, Rohnert Park, CA 94928 USA Sonoma State Univ Rohnert Park CA USA 94928 l, Rohnert Park, CA 94928 USA Univ Uppsala, Dept Evolut Biol, S-75105 Uppsala, Sweden Univ Uppsala Uppsala Sweden S-75105 Evolut Biol, S-75105 Uppsala, Sweden Tel Aviv Univ, Inst Nat Conservat Res, IL-69978 Tel Aviv, Israel Tel Aviv Univ Tel Aviv Israel IL-69978 at Res, IL-69978 Tel Aviv, Israel Montana State Univ, Dept Biol, Bozeman, MT 59717 USA Montana State Univ Bozeman MT USA 59717 Dept Biol, Bozeman, MT 59717 USA S African Natl Parks & Endangered Wildlife Trust, Skukuza, South Africa S African Natl Parks & Endangered Wildlife Trust Skukuza South Africa a Botswana Wild Dog Res Project, Maun, Botswana Botswana Wild Dog Res Project Maun Botswana Res Project, Maun, Botswana Wildlife Conservat Soc, Asia Program, New York, NY USA Wildlife Conservat Soc New York NY USA c, Asia Program, New York, NY USA Okavango Lion Res Project, Maun, Botswana Okavango Lion Res Project MaunBotswana ion Res Project, Maun, Botswana
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 7, volume: 10, anno: 2001,
pagine: 1703 - 1723
SICI:
0962-1083(200107)10:7<1703:POPSGF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN MITOCHONDRIAL-DNA; RESTRICTION ENDONUCLEASES; CONSERVATION GENETICS; SOCIAL-ORGANIZATION; MICROSATELLITE LOCI; NATURAL-POPULATIONS; FORTRAN PROGRAM; SEQUENCE DATA; BROWN BEARS; GRAY WOLF;
Keywords:
demography; microsatellites; mitochondrial DNA; nucleotide diversity; phylogeography; population structure;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
119
Recensione:
Indirizzi per estratti:
Indirizzo: Wayne, RK Univ Calif Los Angeles, Dept Organism Biol Ecol & Evolut, 621 Charles E Young Dr, Los Angeles, CA 90095 USA Univ Calif Los Angeles 621 Charles E Young Dr Los Angeles CA USA 90095
Citazione:
D.J. Girman et al., "Patterns of population subdivision, gene flow and genetic variability in the African wild dog (Lycaon pictus)", MOL ECOL, 10(7), 2001, pp. 1703-1723

Abstract

African wild dogs are large, highly mobile carnivores that are known to disperse over considerable distances and are rare throughout much of their geographical range. Consequently, genetic variation within and differentiation between geographically separated populations is predicted to be minimal. We determined the genetic diversity of mitochondrial DNA (mtDNA) control region sequences and microsatellite loci in seven populations of African wilddogs. Analysis of mtDNA nucleotide diversity suggests that, historically, wild dog populations have been small relative to other large carnivores. However, population declines due to recent habitat loss have not caused a dramatic reduction in genetic diversity. We found one historical and eight recent mtDNA genotypes in 280 individuals that defined two highly divergent clades. In contrast to a previous, more limited, mtDNA analysis, sequences from these clades are not geographically restricted to eastern or southern African populations. Rather, we found a large admixture zone spanning populations from Botswana, Zimbabwe and south-eastern Tanzania. Mitochondrial and microsatellite differentiation between populations was significant and unique mtDNA genotypes and alleles characterized the populations. However, geneflow estimates (Nm) based on microsatellite data were generally greater than one migrant per generation. In contrast, gene flow estimates based on the mtDNA control region were lower than expected given differences in the mode of inheritance of mitochondrial and nuclear markers which suggests a male bias in long-distance dispersal.

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Documento generato il 10/07/20 alle ore 09:44:23