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Advisor(s)
Abstract(s)
The olive fly, Bactrocera oleae (Rossi), is the major pest of olive groves in the
Mediterranean Basin, causing considerable damages in quantity and quality. Most
individuals of B. oleae pupate on the ground underneath the olive trees, where they
are potentially vulnerable to many elements, such as natural enemies, including soil borne organisms, and climate. The present work, held under semi-field conditions,
aimed to evaluate the survival of olive fly pupae in soil, in the climatic conditions
of North Eastern Portugal (41º30’41,07’N; 7º15’4,09’N). Ninety experimental arenas
consisting of plastic containers (9cm diameter and 12 cm height) were filled with
soil, and in each one, 10 third instar B. oleae larvae were placed at their surface
and allowed to pupate. Both, the used soil and the infested fruits used to collect
larvae, proceed from the olive grove where the trial was installed. Each container
was coved with a fine and breathable mesh that was glued around the perimeter
of the containers’ lids (to exclude predators action). A small yellow sticky card was
placed inside the container to better observe adult emergencies. The containers
were buried beneath the trees in order to mimic where pupae would naturally fall
from the olives. This procedure take place in 25th and 30th of November of 2021.
Containers were inspected weekly. The first emergence was recorded on 24th March,
2022, and on 20th April 2022, 23.6% of the buried individuals had already emerged.
Inspections will continue until no more emergencies are observed. The work
can contribute to the development of more sustainable methods of olive groves
protection against the olive fly, mainly during the period in which the pest remains
in the soil.
Description
Keywords
Climatic conditions Mortality Sustainable Protection
Citation
Neto, Marco Aurélio; Gonçalves, Maria de Fátima; Pereira, J.A (2022). Survival of pupae of olive fly, Bactrocera oleae (Rossi) (Diptera:Tephritidae), in natural soil conditions of North Eastern Portugal: preliminary results from a semi-field trial. In XII Congresso Nacional de Entomologia Aplicada. Malaga
Publisher
Sociedade Espanhola de Entomologia Aplicada