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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

Greece

Insecticides

Resistance

Ανθεκτικότητα

Δάκος

Ελιά

Ελλάδα

Εντομοκτόνα