The major storage proteins in cereals, prolamins, have an abundance of the amino acids glutamine and proline. Storage pests need specific digestive enzymes to efficiently hydrolyze these storage proteins. Therefore, post-glutamine cleaving peptidases (PGP) were isolated from the midgut of the stored-product pest, Tenebrio molitor (yellow mealworm). Three distinct PGP activities were found in th...

abstract the cowpea weevil, callosobruchus maculatus is the one of the most destructive pests of the dried seeds including cowpea, chickpea, lentil, mung bean and broad bean. in the last few decades, the use of environmental friendly insecticides, particularly plant-based compounds, has attracted attention of many researchers. the objective of the present work was to evaluate the fumigant toxic...

Sitophilus zeamais is one of the main pests stored corn. The objective present work was to identify resistance corn genotypes attack different densities S. zeamais. 15, 20, 25, 30 and 35 adult insects were used for infestation in samples four maize genotypes: Nutricional Embrapa, Milho Roxo, 8 Carreiras Palha Roxa. number emerged insects, grain mass loss, insect weight, longevity sex ratio eval...

Pest insects have a profound negative impact on agriculture and human health. Significant global losses of crops, stored agricultural products, timber and livestock can be attributed to damage and destruction by insects . Blood-feeding insects such as mosquitoes, flies and ticks transmit many of humanity's most devastating infectious diseases. Insect-borne diseases account for more than one mil...

Sitophilus oryzae (Linnaeus) is a major pest of stored grain across Southeast Asia and is of increasing concern in other regions due to the advent of strong resistance to phosphine, the fumigant used to protect stored grain from pest insects. We investigated the inheritance of genes controlling resistance to phosphine in a strongly resistant S. oryzae strain (NNSO7525) collected in Australia an...

In the present investigation various solvents i.e. acetone, chloroform, petroleum ether, methanol, hexane and aqueous extracts of stem, root and flower of Capparis decidua were evaluated for insecticidal activity against the Rhizopertha dominica (Fabr). For evaluation of insecticidal activity different bioassays were conducted and insects were exposed with varying doses of each extract. These h...