Host range expansion of an introduced insect pest through multiple colonizations of specialized clones

Molecular Ecology
J PeccoudJ-C Simon

Abstract

Asexuality confers demographic advantages to invasive taxa, but generally limits adaptive potential for colonizing of new habitats. Therefore, pre-existing adaptations and habitat tolerance are essential in the success of asexual invaders. We investigated these key factors of invasiveness by assessing reproductive modes and host-plant adaptations in the pea aphid, Acyrthosiphon pisum, a pest recently introduced into Chile. The pea aphid encompasses lineages differing in their reproductive mode, ranging from obligatory cyclical parthenogenesis to fully asexual reproduction. This species also shows variation in host use, with distinct biotypes specialized on different species of legumes as well as more polyphagous populations. In central Chile, microsatellite genotyping of pea aphids sampled on five crops and wild legumes revealed three main clonal genotypes, which showed striking associations with particular host plants rather than sampling locations. Phenotypic analyses confirmed their strong host specialization and demonstrated parthenogenesis as their sole reproductive mode. The genetic relatedness of these clonal genotypes with corresponding host-specialized populations from the Old World indicated that each clone descended ...Continue Reading

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Citations

Apr 22, 2009·Proceedings of the National Academy of Sciences of the United States of America·Jean PeccoudJean-Christophe Simon
Jun 17, 2009·Proceedings of the National Academy of Sciences of the United States of America·Sara Via
Oct 15, 2011·Molecular Biology and Evolution·Julie JaquiéryJean-Christophe Simon
Jul 19, 2012·PloS One·Sarina Macfadyen, Darren J Kriticos
Oct 7, 2009·Proceedings of the National Academy of Sciences of the United States of America·Jean PeccoudNancy A Moran
Jan 15, 2009·Molecular Ecology·Loren RiesebergNolan Kane
Jan 27, 2012·Evolution; International Journal of Organic Evolution·Julia FerrariH Charles J Godfray
Sep 26, 2013·Evolutionary Applications·Francisca A Zepeda-PauloBlas Lavandero
Oct 21, 2010·Molecular Ecology·F A Zepeda-PauloC C Figueroa
Jun 24, 2014·Journal of Evolutionary Biology·P NouhaudJ-C Simon
Jan 3, 2014·Insect Science·Jean PeccoudJean-Christophe Simon
Jun 25, 2014·Evolution; International Journal of Organic Evolution·Jean PeccoudJean-Christophe Simon
Jul 31, 2016·Molecular Ecology·Isobel EyresJulia Ferrari
Jan 24, 2018·Genome Biology and Evolution·Julie JaquiéryClaude Rispe
May 28, 2019·Integrative and Comparative Biology·Amanda K Gibson
Jun 9, 2019·Environmental Entomology·Monique F de Souza, Jeffrey A Davis
Aug 14, 2020·Ecology and Evolution·Sebastián I MartelFrancisco Bozinovic
Aug 25, 2017·Biological Reviews of the Cambridge Philosophical Society·Hugh D Loxdale, Adalbert Balog
Mar 12, 2021·Microbial Ecology·Corentin SochardYannick Outreman

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