Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Islands on the plains: metapopulation dynamics and female biased dispersalin hyraxes (Hyracoidea) in the Serengeti National Park
Autore:
Gerlach, G; Hoeck, HN;
Indirizzi:
Univ Konstanz, Fak Biol, D-78434 Constance, Germany Univ Konstanz Constance Germany D-78434 Biol, D-78434 Constance, Germany Max Planck Inst Verhaltensphysiol, D-82319 Seewiesen, Germany Max Planck Inst Verhaltensphysiol Seewiesen Germany D-82319 sen, Germany
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 9, volume: 10, anno: 2001,
pagine: 2307 - 2317
SICI:
0962-1083(200109)10:9<2307:IOTPMD>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
RECENT POPULATION BOTTLENECKS; ENDEMIC AFRICAN MAMMALS; ALLELE FREQUENCY DATA; ESTIMATING RELATEDNESS; MULTILOCUS GENOTYPES; SOCIAL-ORGANIZATION; EFFECTIVE SIZE; LOCI; INDIVIDUALS; EXTINCTION;
Keywords:
dispersal; DNA microsatellites; Heterohyrax brucei; metapopulation; Procavia johnstoni;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Gerlach, G Univ Konstanz, Fak Biol, Postfach 5560 M657, D-78434 Constance,Germany Univ Konstanz Postfach 5560 M657 Constance Germany D-78434 any
Citazione:
G. Gerlach e H.N. Hoeck, "Islands on the plains: metapopulation dynamics and female biased dispersalin hyraxes (Hyracoidea) in the Serengeti National Park", MOL ECOL, 10(9), 2001, pp. 2307-2317

Abstract

Two species of hyrax, Heterohyrax brucei and Procavia johnstoni, inhabit rock outcrops, or kopjes, in the Serengeti National Park, Tanzania. Such distinct 'island' habitats provide an excellent model to investigate natural metapopulation dynamics with distinct small populations with extinction and colonization events, as well as migration between populations. Allele frequencies, genetic variability and genetic distances between populations were calculated based on DNA microsatellite markers. The genetic diversity in both species of hyrax, especially P. johnstoni, was surprisingly low: allelicdiversity ranged from 2 to 7 alleles per locus. This may have been inducedby colonization by a small number of individuals from single source populations. F-statistics, assignment tests and calculations of pairwise relatedness all indicated female-biased dispersal in H. brucei but not P. johnstoni. Values of FIS in P. johnstoni showed an excess of homozygotes indicative of high rates of inbreeding; evidence for inbreeding could not be detected in H. brucei. Although female dispersal patterns in H. brucei seem to prevent inbreeding and consequently reduce risk of local extinction, this seems not to be the case in P. johnstoni.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 04:13:40