Genetic variability in Tetranychus urticae (Acari: Tetranychidae) from Greece: Insecticide resistance and isozymes

TitleGenetic variability in Tetranychus urticae (Acari: Tetranychidae) from Greece: Insecticide resistance and isozymes
Publication TypeJournal Article
Year of Publication1996
AuthorsTsagkarakou, A, Navajas M, Lagnel J, Gutierrez J, Pasteur N
JournalJournal of Economic Entomology
Volume89
Issue6
Pages1354 - 1358
Keywordsgenetic differentiation, Insecticide resistance, isoelectric focusing, Tetranychus urticae
Abstract

Resistance to methyl-parathion methidathion, and methomyl was studied by bioassays in Tetranychus urticae Koch from Greece. At LC50, the resistance ratio was highly variable with methidathion (5- to 63-fold) and with methomyl (6- to 34-fold). The mortality curves with methyl-parathion showed a clear plateau at ≃20% mortality, and the resistance ratio was ≃50 fold at LC50 in all samples. By using isoelectric focusing on cellulose acetate membranes, electrophoretic studies of 5 loci encoding esterases (Est-1 and Est-2), glucose-phosphate isomerase (Gpi), malic enzyme (Me), and phosphoglucomutase (Pgm) disclosed large genetic differences among the samples.

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0030485243&partnerID=40&md5=5ca68d1453772b90fd6e7deb150f7fc2

User login