| Sumario: | The Mediterranean fruit fly, Ceratitis capitata (Diptera: Tephritidae), is
considered a key pest in fresh fruit and citrus production in the Mediterranean
Bassin. Nowadays, it is being studied the use of several ecological methods
against this pest in some Mediterranean countries (Spain, Morocco and Tunisia),
like the Sterile Insect Technique (SIT), the classical biological control (CBC) and
the search for native parasitoids. Two exotic larval-pupal parasitoids of fruit-flies
have been imported by the IVIA to Spain: Diachasmimorpha tryoni and D.
longicaudata. As it occurs in other countries, in Spain it is being studied the
combined use of the SIT and overflooding releases of parasitoids to combat Medfiy
populations. To achieve this, only one parasitoid species is usually mass reared
and released. Over the last two years we have been analyzing the competitiveness
of D. longicaudata and D. tryoni in order to choose the species to be used together
with the SIT for the integrated control of the Medfly
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