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Identifier 000412828
Title Σύγχρονες μεθόδοι για την ορθολογική διάχειριση της δακοκτονίας
Alternative Title Modern approaches for managing olive fruit fly control programs
Author Βλαχάκη, Αντωνία Μ.
Thesis advisor Βόντας, Ιωάννης
Reviewer Πουλακάκης, Νικόλαος
Ροδιτάκης, Εμμανουήλ
Abstract The olive fruit fly (Bactrocera oleae: Diptera, Tephritidae) is the major pest of olive orchards worldwide. Females lay their eggs in olive fruits and the monophagous larvae feed on the mesocarp, causing loss of production. Various methods have been applied for managing the olive fly, but the main method is the use of chemical insecticides. Hence the intensive use of insecticides since decades has led to the development of resistant populations in many areas of the world, as in Greece. Mutations in the gene encoding the enzyme acetylcholinesterase inhibit the bonding of οrganophosphate insecticides to the target protein in the insect’s nervous system. Resistance mutations concern other insecticides too. As a result, the control of olive fly populations in the field cannot be achieved. In the present study, in collaboration with Anastasia Kampouraki (Laboratory of Molecular Entomology, Department of Biology, University of Crete) and Marianna Stavrakaki (Laboratory of Entomology, Greek Agricultural Organization "Dimitra"), the efficacy of common insecticides in Greek orchards was tested. In particular, we conducted bioassays using wild olive fly populations from seven Peripheries, as well as molecular diagnostic tests searching for known resistance mutations to organophosphates. The results of bioassays were analysed in order to estimate the values of the median lethal concentration LC50 of insecticides. These values will be used to determine a susceptibility threshold for Greek olive fly populations. The diffusion of information is essential so as to achieve an effective management and it is accomplished by using the Galanthos Database.
Language Greek
Subject Bactrocera oleae
Issue date 2017-11-22
Collection   Faculty/Department--Faculty of Sciences and Engineering--Department of Biology--Post-graduate theses
  Type of Work--Post-graduate theses
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