Étude du potentiel biotique du parasitoïde Encarsia sophia dans des conditions contrôlées

Ali Ben Belgacem; Mohamed Sadok Belkadhi

doi:10.56027/JOASD.022020

Authors

Ali Ben Belgacem
Mohamed Sadok Belkadhi

DOI:

https://doi.org/10.56027/JOASD.022020

Keywords:

Bemisia tabaci, Nesidiocoris tenuis, Eretmocerus mundus, Encarsia sophia, parasitoids, biological control

Abstract

Bemisia tabaci Gennedius (1889) is a phytophagous pest affecting various crops all over the world. Biological control against B. tabaci is based on the use of its natural enemies, especially parasitoids and predators. In this context, several parasitoid species of the genus Eretmocerus and Encarcia and predators (such as Nesidiocoris tenuis) whose effectiveness has been proven, are used in the control of this white fly.

The evaluation of the potentialities of the indigenous parasitoid Encarsia sophia has shown a performance in limiting the populations of B. tabaci in geothermal greenhouses in southern Tunisia. However at 25 ° C and relative humidity varying between 55 and 75%, the parasitism rate of E. sophia of B. tabaci larvae L2, L3 and L4 on eggplant culture is 14.72 ± 5.60%.

It is concluded that the use of this native enemy of B. tabaci can remedy the multiplication of this pest.

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