Spread of resistance genes in aphid populations-a simulation study

• Published in: Journal of applied entomology (1986) Vol. 121; no. 1-5; pp. 219 - 224
• Main Authors: Schönfisch, B., Tomiuk, J., Wöhrmann, K.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01-09-1997; Blackwell
• Subjects: Animals; Biological and medical sciences; Fundamental and applied biological sciences. Psychology; Genetics of eukaryotes. Biological and molecular evolution; Invertebrata; Phytopathology. Animal pests. Plant and forest protection; Population genetics, reproduction patterns; Protozoa. Invertebrates; Records, symptoms, damages, economic importance, population surveys; Aphidoidea; Genetic inheritance; Computer simulation; Growth rate; Reproductive pattern; Insecta; Genotype; Animal active movement; Coevolution; Population genetics; Life cycle; Allele; Pest; Homoptera; Gene frequency; Animal plant relation; Arthropoda; Host plant; Aphididae; Selection pressure; Simulation model; Pesticide resistance; Invertebrata
• ISSN: 0931-2048; 1439-0418
• DOI: 10.1111/j.1439-0418.1997.tb01396.x

The model considers the spread of resistance genes in aphid populations. Two modes of aphid life cycles, a holocyclic and an anholocyclic, are simulated. Aphids are assumed to migrate from their primary host plants to two secondary host plants and vice versa causing several bottlenecks. The model studied is an one locus‐two allele model: first, it is assumed that negative selection acts against one homozygous genotype parasiting on the primary as well as secondary host. Secondly, the genotypes are assumed to be differently selected on the two secondary host plants while no selection takes place on the primary host. The model predicts a rapid spread of resistance genes in populations under conditions met in agricultural areas.