Publications by authors named "H A El-Sadawy"

The sand fly Phlebotomus papatasi is an important disease-bearing vector. Five entomopathogenic nematodes (EPNs) - Steinernema carpocapsae DD136, Steinernema sp. (SII), S.

View Article and Find Full Text PDF

Mosquito-control is still based mostly on chemical insecticides which are toxic and cause environmental deprivation. This study investigates synthesizing silver bio-nanoparticles (AgNPs) from nematode-symbiotic bacterial toxin complexes as an alternative larvicidal bioinsecticide agent against Culex pipiens larvae. Five species/strains of nematode-symbiotic bacteria, Xenorhabdus indica, Xenorhabdus spp.

View Article and Find Full Text PDF

Background: The incidence of mosquito-borne diseases and the resistance of mosquitoes to conventional pesticides have recently caused a panic to the authorities in the endemic countries. This study was conducted to identify native larvicidal biopesticides against for utilization in the battle against mosquito-borne diseases.

Methods: Larvicidal activities of new indigenous isolates and crude toxin complexes (TCs) of two nematode bacterial-symbionts, (HRM1) and (HS1) that tested against .

View Article and Find Full Text PDF

Five bacterial strains were isolated from the hemocoel of the greater wax moth larvae (Galleria mellonella) infected with the entomopathogenic nematodes: Heterorhabditis bacteriophora HP88, Heterorhabditis indicus RM1 and Heterorhabditis sp (S1), Steinernema abbasi and Steinernema sp. (S II). Strains were identified as Photorhabdus luminescens HRM1, P.

View Article and Find Full Text PDF

Biological control of hard ticks, Hyalomma dromedarii (Acari: Ixodidae) using entomopathogenic nematode of two families; Heterorhabditidae and Steinernematidae was studied. The protective effect of controlled ticks including haemolymph and haemocytes against these biological agents were also investigated. It was found that heterorhabditid strains cause a higher effect in biological control of engorged female H.

View Article and Find Full Text PDF