Objectives: To evaluate the in vitro activity of aqueous and methanolic extracts of stem bark of Terminalia glaucescens on the eggs and larval stages of Haemonchus contortus of sheep. Methods: The eggs were exposed for 24 hours in five different concentrations (625, 1250, 2500, 3750 and 5000 μg/ml) of methanol, hot water (decoction) and cold water extracts at room temperature (25 ̊C). Distilled ...

Schistosomiasis is a tropical disease caused by Schistosoma and occurs in 54 countries, mainly in South America, the Caribbean region, Africa and the eastern Mediterranean. Currently, 5 to 6 million Brazilian people are infected and 30,000 are under infection risk. Typical of poor regions, this disease is associated with the lack of basic sanitation and very frequently to the use of contaminate...

Insecticide resistance has limited the number of available chemical options for insect pest control. Hence there is a need for new chemistries with novel modes of action. Here we investigate the mode of action for an insecticide that has not yet been released for commercial use. The ovicidal, larvacidal and adulticidal effects of 5,5'-dimethyl -2, 2'-dipyridyl (termed Ha44), which is being deve...

Plutella xylostella cause considerable harm to the production of broccoli, Chinese cabbage, cabbage and cauliflower. The control P. is mainly performed using commercial insecticides, which have even led emergence resistant populations. Two easily available natural products found in different plants essential oil, thymol eugenol, stand up as possible novel agents this pest. In work a series alky...

The objective was to evaluate the insecticidal effect of extracts Ziziphus joazeiro Mart., Croton sonderianus and Amburana cearenses on hatchability eggs fall armyworm Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae). three plant species were produced at concentrations 5%, 10% 15%, distilled water as a control. For each concentration, paper towel discs containing 30 immersed for secon...

The objective of this work was to evaluate the effect hexane fraction crude extract fruits and seeds Ricinus communis (HFFSRC) on eggs Spodoptera cosmioides frugiperda caterpillars eridania, S. frugiperda, cosmioides, under laboratory conditions through topical application ingestion, as well identify compounds in high-performance chromatography (HPLC-ESI-Q-TOF-MS/MS). To do so, three bioassays ...