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Titolo:
Post-bottleneck genetic diversity of elephant populations in South Africa,revealed using microsatellite analysis
Autore:
Whitehouse, AM; Harley, EH;
Indirizzi:
Univ Cape Town, Sch Med, Dept Chem Pathol, Cape Town, South Africa Univ Cape Town Cape Town South Africa m Pathol, Cape Town, South Africa Univ Port Elizabeth, Dept Zool, Terr Ecol Res Unit, Port Elizabeth, South Africa Univ Port Elizabeth Port Elizabeth South Africa Elizabeth, South Africa
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 9, volume: 10, anno: 2001,
pagine: 2139 - 2149
SICI:
0962-1083(200109)10:9<2139:PGDOEP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALLELE FREQUENCY DATA; INBREEDING DEPRESSION; CONSERVATION; DNA; EXTINCTION; LOCI; DIFFERENTIATION; VARIABILITY; SUBDIVISION; VIABILITY;
Keywords:
African elephant; bottleneck; genetic diversity; genetic drift; inbreeding; microsatellites;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
86
Recensione:
Indirizzi per estratti:
Indirizzo: Whitehouse, AM Univ Cape Town, Sch Med, Dept Chem Pathol, Observ 7925, Cape Town, South Africa Univ Cape Town Observ 7925 Cape Town South Africa Africa
Citazione:
A.M. Whitehouse e E.H. Harley, "Post-bottleneck genetic diversity of elephant populations in South Africa,revealed using microsatellite analysis", MOL ECOL, 10(9), 2001, pp. 2139-2149

Abstract

Widespread hunting had fragmented and severely reduced elephant populations in South Africa by 1900. Elephant numbers increased during the 1900s, although rates of recovery of individual populations varied. The Kruger National Park elephant population increased rapidly, to more than 6000 by 1967, with recruitment boosted by immigration from Mozambique. The Addo Elephant National Park population was reduced to 11 elephants in 1931 and remains relatively small (n = 325). Loss of genetic variation is expected to occur whenever a population goes through a bottleneck, especially when post-bottleneck recovery is slow. Variation at nine polymorphic microsatellite loci was analysed for Kruger and Addo elephants, as well as museum specimens of Addoelephants shot prior to the population bottleneck. Significantly reduced genetic variation and heterozygosity were observed in Addo in comparison to Kruger (mean alleles/locus and H-E: Addo 1.89, 0.18; Kruger 3.89, 0.44). Two alleles not present in the current Addo population were observed in the museum specimens. Addo elephants represent a genetic subset of the Kruger population, with high levels of genetic differentiation resulting from rapid genetic drift. The Kruger population is low in genetic diversity in comparison to East African elephants, confirming this population also suffered an appreciable bottleneck.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 08:31:07