TITLE:
Study of the Population Dynamics of the Olive Fly, Bactrocera oleae Rossi. (Diptera, Tephritidae) in the Region of Essaouira
AUTHORS:
Abdellaziz Ait Mansour, Kholoud Kahime, Mohammed Chemseddine, Ali Boumezzough
KEYWORDS:
Bactrocera oleae, Dynamics, Generation, Coastline, Morocco
JOURNAL NAME:
Open Journal of Ecology,
Vol.5 No.5,
May
20,
2015
ABSTRACT: The Bactrocera
oleae Rossi fly is the most important olive pest. It is of major economic
importance in the olive production area of Essaouira, where weather conditions
are optimal for the conduct of the various stages of its life cycle. The lack
of phytosanitary treatments worsens this situation. The development of the
larval stages and different generations are related to the phenological stages
of the olive and are controlled by changes in habitat conditions. Trapping of
adult males by Deltas traps baited with sex pheromone, at the four study sites,
has identified some characteristics of the evolution of the adult populations’
flight dynamics. Our main results show a decreasing gradient of early
emergences of different stages from the coast to the continental areas as well
as the absence of the summer generation at the inner station. Soil analysis in
the two stations showed that the hypogenous pupae wintering in the soil survive
until June. Knowledge of the factors involved in the bio-ecology of the olive
fly and the phenology of the host allows the elaboration of monitoring/ warning
calendars, and phytosanitary measures in order to establish an IPM program
adapted to the requirements of olive orchards in the region.