To grow and reproduce well, animals facing fluctuations in abiotic conditions must adjust their physiology, activity rhythms, and
foraging behavior accordingly. The foraging activity and food preferences of the samsum ant Pachycondyla sennaarensis (Mayr)
(Hymenoptera Formicidae Ponerinae) were investigated both in the field and in the laboratory. Foraging activity was examined in
the field for two years (2008-2009) and through all four seasons. Ant foraging activity was recorded over a twenty-four hour period

Methanol extracts of different plants namely, Trichodesma africanum (Boraginaceae), Cleome
rupicola (Capparceae) and Ochradenus baccatus (Resedaceae), were tested for larvicidal activity against 4th instar
larvae of Aedes caspius and Culex pipiens mosquitoes. All plant extracts tested against Ae. caspius showed 100%
mortality at 10μg/ml except the stem of O. baccatus which showed 90% mortality. However, most of the plant
extracts tested against Cx. pipiens showed more than 50% mortality at 10μg/ml. Ae. caspius reported lower LD50 than

A series of naphthyl and tolyl sulfonate ester were synthesized and characterized by H NMR. X-ray single
crystal diffraction experiments established the molecular structure of three new sulfonate esters derivatives,
and spectral data agree with these in solution. The observed hydrogen bonding is discussed on the
basis of crystal structural analyses and DFT/MP2 geometry optimization quantum calculations. Antimicrobial
activities were screened for selected compounds against three human cancer cell lines and Mosquito
Culex pipiens larvae

Efficiency of most pesticides is monitored by many factors such as the method of application, the
concentrations and the temperature. The study was aimed to investigate the optimal conditions for
using Insect Growth Regulator (IGR), cyromazine to control the Southern cowpea weevil
Callosobruchus muculatus Fab. (Bruchidae: Coleoptera). Interactions of the method of application and
concentrations of cyromazine together with temperatures significantly affected the reproductive rate of

This study investigates the effect of different concentrations of the growth regulator (Cyromazine), temperature and treatment methods on the reproductive rate, generation lifespan and weight loss of the Southern cowpea weevils Callosobruchus maculatus (Coleoptera: Bruchidae). Data showed that weevils failed to complete their life cycle on the host peas, Pisum sativum, pre-dipped in a 5% cyromazine at 30°C. Cyromazine-dipped peas seeds were protected from insect attack comparing to cyromazine-sprayed seed.

Insect pests of stored products constitute a worldwide problem because they reduce the quantity and quality of stored products. In this study we investigated the interactions between different factors that affect the growth of two successive generations of the southern cowpea weevils, Callosobruchus muculatus (Fab.) (Bruchidae: Coleoptera) reared on mung bean, to find a best conditions to control this pest. These factors include cyromazine concentration, treatment method and breading temperature. Our results showed a variable effect in the reproductive rate of C.