IMPACT DE TROIS PLANTES SUR CERTAINS PARAMETRES BIOLOGIQUES DES LARVES (L5) DU CRIQUET PELERIN SHISTOCERCA GREGARIA FORSKÅL, 1775 (ORTHOPTERA : ACRIDIDAE)

Abstract

The purpose of this study was to study the effect of the leaves of Rosmarinus officinalis L.
(Lamiaceae), Lonicera japonica L. (Caprifoliaceae) and Nerium oleander L. (Apocynaceae)
on some biological parameters of the L5 larvae of the plant. Desert Locust Schistocerca
gregaria, by direct feeding and by injection (leaf extracts) under laboratory conditions. The
fresh leaves of L. japonica were well appreciated by the S. gregaria L5 larvae and showed no
adverse effect on the different parameters studied. On the other hand, leaves and extracts of N.
oleander and R. officinalis caused disturbances in the various biological parameters studied,
including low weight gains, high mortality rates, and inhibition of fledging. In view of the
results obtained, the plants of R. officinalis and N. oleander offer a promising alternative to
the use of synthetic pesticides in Desert Locust control.