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Titolo:
Microsatellite analysis of genetic variation among and within Alpine marmot populations in the French Alps
Autore:
Goossens, B; Chikhi, L; Taberlet, P; Waits, LP; Allaine, D;
Indirizzi:
Univ Grenoble 1, Lab Biol Populat Altitude, CNRS, UMR 5553, F-38041 Grenoble 9, France Univ Grenoble 1 Grenoble France 9 , UMR 5553, F-38041 Grenoble 9, France Univ London Queen Mary & Westfield Coll, Sch Biol Sci, London E1 4NS, England Univ London Queen Mary & Westfield Coll London England E1 4NS S, England Univ Lyon 1, CNRS, UMR 5553, Lab Biol Populat Altitude, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 de, F-69622 Villeurbanne, France
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 1, volume: 10, anno: 2001,
pagine: 41 - 52
SICI:
0962-1083(200101)10:1<41:MAOGVA>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
TAILED PRAIRIE DOGS; INBREEDING AVOIDANCE; VARIABILITY; DISPERSAL; MAMMALS; DNA; EVOLUTION; DIFFERENTIATION; INDIVIDUALS; SOCIALITY;
Keywords:
F-statistics; inbreeding avoidance; isolation by distance; Marmota marmota; microsatellites; population genetic structure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
58
Recensione:
Indirizzi per estratti:
Indirizzo: Goossens, B Cardiff Univ, Sch Biosci, Biodivers & Ecol Proc Grp, POB 915 Cathays Pk, Cardiff CF10 3TL, S Glam, Wales Cardiff Univ POB 915 Cathays Pk Cardiff S Glam Wales CF10 3TL
Citazione:
B. Goossens et al., "Microsatellite analysis of genetic variation among and within Alpine marmot populations in the French Alps", MOL ECOL, 10(1), 2001, pp. 41-52

Abstract

The genetic structure of the Alpine marmot, Marmota marmota, was studied by an analysis of five polymorphic microsatellite loci. Eight locations weresampled in the French Alps, one from Les Ecrins valley (n = 160), another from La Sassiere valley (n = 289) and the six others from the Maurienne valley (n = 139). Information on social group structure was available for bothLes Ecrins and La Sassiere but not for the other samples. The high levels of genetic diversity observed are at odds with the results obtained using microsatellites, minisatellites and allozymes on Alpine marmots from Germany, Austria and Switzerland. Strong deficits in heterozygotes were found in Les Ecrins and La Sassiere. They are caused by a Wahlund effect due to the family structure (i.e. differentiation between the family groups). The family groups exhibit excess of heterozygotes rather than deficits. This may be caused by outbreeding and this is compatible with recent results from the genetics of related social species when information on the social structure is taken into account. The observed outbreeding could be the result of females mating with transient males or males coming from neighbouring colonies. Both indicate that the species may not be as monogamous as is usually believed, The results are also compatible with a male-biased dispersal but do not allow us to exclude some female migration. We also found a significant correlation between geographical and genetic distance indicating that isolation by distance could be an issue in marmots. This study is the first that analysed populations of marmots taking into account the social structure within populations and assessing inbreeding at different levels (region, valley, population, and family groups), Our study clearly demonstrated that thesampling strategy and behavioural information can have dramatic effects onboth the results and interpretation of the genetic data.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 15:02:16