The ant Pachycondyla sennaarensis (Mayr) (Hymenoptera: Formicidae: Ponerinae) is a small
dark ant, a recent accidental introduction into Saudi Arabia. It tends to be found in or near
human habitations, and it is particularly unpleasant because its sting can cause severe
reaction in some individuals, and there are reports of fatal effects. Analysis of the poison
apparatus of P. sennaarensis, locally known as the samsum ant, and comparison with two
other native small black ants, Messor meridionalis and M. foreli (Hymenoptera: Formicidae),
Child Health Nursing enables Students to gain a professional qualification based upon sound theoretical foundations, problem solving and ethical reasoning.
Abstract.- In this study, laboratory assessment was made with a water-dispersible toxin solution formulation of Pseudomonas frederiksbergensis bacterium. The study was conducted to determine the activity of an isolated extract formulation of P. frederiksbergensis toxin against 3rd stage larvae of the Rift Valley Fever vector, Aedes caspius, mosquito in Saudi Arabia for the first time. This bacterium was isolated from the contaminated Saudi soil and proved to be safe to living organisms and environment. This P.
Abstract.- This study was conducted to test the toxicity of a novel bacterial product against the filaria vector, Culex pipiens, mosquito in Saudi Arabia for the first time. This bacterial product was extracted from the soil bacterium, Pseudomonas frederiksbergensis isolated from the contaminated Saudi soil that was proved to be eco-friend and safe to living organisms. P. frederiksbergensis extract identified as glycolipid that afforded a potent mosquito larvicide and has surface and histological activities against 3rd instar larvae of Cx.
The present study was aimed at molecular and phenotypic characterization of two new bacterial strains isolated from entomopathogenic nematodes, Heterorhabditis indica RM1 from Alexandria, northern Egypt and Heterorhabditis sp. S1 from RasSidr, South Sinai, eastern Egypt. These entomopathogenic bacteria secrete lethal toxins that rapidly kill the insect host within 48h. They also produce various antibiotics that suppress infection by other microorganisms.
through reading this passage,the students will focus on the sentence structure,guess the meaning of the new words...paraphrase what they understand from each paragraph...,
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 Culex pipiens for utilization in the battle against mosquito-borne diseases.
