Larvicidal activity and cytotoxicity of fruit and leaf extracts of the Capparis cartilaginea were
evaluated. No previous studies have been reported on the larvicidal activities of crude and
column chromatographic fractions of fruit and leaf extracts of Capparis cartilaginea. In this
study, HPLC analysis of the alkaloidal active fraction F2 of methanolic fruit extract showed
the presence of a major peak. Crude aqueous fruit extract of C. cartilaginea was less toxic
against Aedes caspius (LC50 = 172.02) compared to its column chromatographic fraction F2

The present study was carried out to evaluate the larvicidal activity and cytotoxicity of Aspergillus sydowi extract. The LC50 calculated of methanol crude extract and fraction 6 was 250.86±4.15 and 56.61±0.89 μg/ml for Aedes caspius and 271.02±7.01 and 103.74±0.99 for Culex pipina respectively after 24 hours of exposure. Larvae of Ae. caspius treated with fraction 6 of A. sydowi methanol extract underwent a lethal disruption of the peritrophic membrane and an extensive cellular microvillar disruption.

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.