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Titolo:
Genetic variation ln the spread of Drosophila subobscura from a nonequilibrium population
Autore:
Noor, MAF; Pascual, M; Smith, KR;
Indirizzi:
Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA Louisiana State Univ Baton Rouge LA USA 70803 , Baton Rouge, LA 70803 USA Univ Barcelona, Fac Biol, Dept Genet, E-08028 Barcelona, Spain Univ Barcelona Barcelona Spain E-08028 t Genet, E-08028 Barcelona, Spain
Titolo Testata:
EVOLUTION
fascicolo: 2, volume: 54, anno: 2000,
pagine: 696 - 703
SICI:
0014-3820(200004)54:2<696:GVLTSO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROSATELLITE LOCI; MULTIPLE INSEMINATION; NATURAL-POPULATIONS; MITOCHONDRIAL-DNA; FOUNDER EVENT; COLONIZATION; AMERICA; PSEUDOOBSCURA; BOTTLENECKS; EVOLUTION;
Keywords:
colonization; Drosophila subobscura; founder effect; microsatellites; nonequilibrium populations; RFLP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Noor, MAF Louisiana State Univ, Dept Biol Sci, Life Sci Bldg, Baton Rouge,LA 70803 USA Louisiana State Univ Life Sci Bldg Baton Rouge LA USA 70803 USA
Citazione:
M.A.F. Noor et al., "Genetic variation ln the spread of Drosophila subobscura from a nonequilibrium population", EVOLUTION, 54(2), 2000, pp. 696-703

Abstract

Drosophila subobscura was first identified in North America in the early 1980s, and a newer D. subobscura population in Utah appears to have been established more than 10 years later. In this study, we use nuclear microsatellite allele frequencies, mitochondrial restriction fragment length polymorphism (RFLP) allele frequencies, and computer simulations to investigate possible scenarios of how this species has spread across North America. Our method develops a 95% confidence interval for the maximum and minimum number of founders that could have colonized the new population given various scenarios for spread. Unlike many other methods, it may be applied to nonequilibrium source populations given certain conditions. We find that observed allele frequency differences between newer and older D. subobscura populations are consistent with very few inseminated females being transported east from the coast in a single step or with larger numbers of colonizers invading after several intermediate steps. They are not consistent with a large, panmictic population of D. subobscura colonizing Utah in a single step.

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Documento generato il 03/12/20 alle ore 21:49:06