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Vorburger, C (2006). Temporal dynamics of genotypic diversity reveal strong clonal selection in the aphid Myzus persicae. Journal of Evolutionary Biology, 19(1):97-107.

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Abstract

Parthenogenetic organisms often harbour substantial genotypic diversity. This diversity may be the result of recurrent formations of new clones, or it may be maintained by environmental heterogeneity acting on ecological differences among clones. In aphids, both processes may be important because obligate and cyclical parthenogens can form mixed populations. Using microsatellites, I analysed the temporal dynamics of clonal diversity in such a population of the aphid Myzus persicae over a 1-year period. The frequency distribution of clonal genotypes was very skewed, with many rare and few common clones. The relative frequencies of common clones underwent strong and rapid changes indicative of intense clonal selection. Differences in their host associations suggest that these shifts may partly be caused by changes in the abundance of annual host plants. Other selective factors of potential importance are also discussed. New, sexually produced genotypes made a minor contribution to clonal diversity, consistent with the observed heterozygote excess characteristic of predominantly asexual populations in M. persicae.

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
DDC:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:1 January 2006
Deposited On:11 Feb 2008 12:14
Last Modified:28 Nov 2013 01:49
Publisher:Wiley-Blackwell
ISSN:1010-061X
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:10.1111/j.1420-9101.2005.00985.x
PubMed ID:16405581
Citations:Web of Science®. Times Cited: 37
Google Scholar™
Scopus®. Citation Count: 36

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