title: Analysis of insecticide-resistant Myzus persicae (Sulzer) populations collected in Italian peach orchards.
abstract: Several populations of the green peach aphid, Myzus persicae (Sulzer), were collected in the most important Italian peach-growing areas. In these populations, collected as primary colonies or as secondary ones, total esterase content and acetylcholinesterase sensitivity towards pirimicarb was assessed using biochemical assays. Most of the individuals analysed generally exhibited an elevated esterase content, and in some cases acetylcholinesterase insensitivity. The implications of resistance levels and distribution on M persicae control strategies are discussed.
authors.affiliation: Istituto di Entomologia e Patologia Vegetale, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, I-29100 Piacenza, Italy. mazzoni@pc.unicatt.it
authors.forename: Emanuele
authors.initials: E
authors.lastname: Mazzoni
authors.forename: Piero
authors.initials: P
authors.lastname: Cravedi
mesh_terms: D000818:Animals; D001042:Aphids / Q000187:drug effects* / Q000201:enzymology; D001681:Biological Assay; D004950:Esterases / Q000235:genetics / Q000378:metabolism; D014644:Genetic Variation; D007305:Insecticide Resistance / Q000235:genetics; D007306:Insecticides / Q000494:pharmacology* / Q000633:toxicity; D007558:Italy; D027861:Prunus / Q000469:parasitology*
chemical_list: D007306:Insecticides; D004950:Esterases