Microsatellite variation in cyclically parthenogenetic populations of Myzus persicae in south-eastern Australia

Alexandra Wilson, P. Sunnucks, R. L. Blackman, D. F. Hales

Research output: Contribution to journalArticle

Abstract

We examined the population structure of the introduced aphid, Myzus persicae collected mainly from its primary host, Prunus persica, in south-east Australia. Myzus persicae has been present in Australia since at least 1893. Samples were collected in the spring of 1998 from two mainland and three Tasmanian localities and isofemale lines were established in the laboratory. The reproductive mode (life cycle), karyotype and 17-locus microsatellite genotype of each clone were determined. All populations showed significant population differentiation (FST 0.058-0.202) even over small geographic distances (<50 km). All clones were karyotypically normal except for a subset of clones from one site that was exposed to the carbamate insecticide, Pirimor, the week prior to sampling. Those clones were heterozygous for an autosomal 1, 3 translocation frequently associated in M. persicae with insecticide resistance. In contrast to other loci and despite being on different chromosomes, loci myz2A and M55A showed general and significant linkage disequilibrium. These loci may be affected by epistatic selection. We discuss the observed high clonal diversity, moderate but significant population differentiation, general conformance to Hardy-Weinberg equilibria and low linkage disequilibria with particular focus on the global population biology of M. persicae.

Original languageEnglish (US)
Pages (from-to)258-266
Number of pages9
JournalHeredity
Volume88
Issue number4
DOIs
StatePublished - Jan 1 2002
Externally publishedYes

Fingerprint

Aphids
South Australia
Microsatellite Repeats
Clone Cells
Population
Linkage Disequilibrium
Insecticide Resistance
Carbamates
Insecticides
Life Cycle Stages
Karyotype
Chromosomes
Genotype

Keywords

  • Aphid
  • Colonisation
  • Cyclical parthenogen
  • Microsatellite
  • Myzus
  • Population genetics

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Microsatellite variation in cyclically parthenogenetic populations of Myzus persicae in south-eastern Australia. / Wilson, Alexandra; Sunnucks, P.; Blackman, R. L.; Hales, D. F.

In: Heredity, Vol. 88, No. 4, 01.01.2002, p. 258-266.

Research output: Contribution to journalArticle

Wilson, Alexandra ; Sunnucks, P. ; Blackman, R. L. ; Hales, D. F. / Microsatellite variation in cyclically parthenogenetic populations of Myzus persicae in south-eastern Australia. In: Heredity. 2002 ; Vol. 88, No. 4. pp. 258-266.
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