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the date palm fruit stalk borer is one of the most important pests of date palm in the world. biochemical properties of digestive proteases in oryctes elegans prell larvae were investigated in this research and optimal total proteolytic and trypsin activities were obtained at ph 9.0 and 11.0, respectively. activity staining of protease on sds-page showed one isoform. also, zymogram pattern of t...

the cotton bollworm, helicoverpa armigera (hübner), is a serious pest on a wide range of economic crops in many parts of the world. in this study, digestive proteolytic and amylolytic activities of h. armigera larvae (3rd to 5th instars) were evaluated on five main host plants including chickpea (cv hashem), cowpea (cv mashhad), soybean (cv 033), navybean (cv dehghan), and corn (cv sc 704) at 2...

Digestive proteinase activities of Artemesia longinaris were assayed at different stages of the molting cycle. Total proteolytic activity in the hepatopancreas was highest during postmolt. Trypsin and chymotrypsin activities were highest during intermolt. Specific inhibitors and zymograms of A. longinaris hepatopancreas extracts showed four trypsins (14.79, 15.49, 16.60, 17.38 kDa, respectively...

background: determination of digestive enzymes activity would provide critical information in the design of appropriate diet. sobaity, sparidentex hasta is found in the persian gulf and  cultured in countries adjacent to it. objectives: this study investigated proteolytic, amylase and lipase activities in the intestine of sparidentex hasta captured from the  persian gulf. methods: 60 immature s...

Background: Determination of digestive enzymes activity would provide critical information in the design of appropriate diet. Sobaity, Sparidentex hasta is found in the Persian Gulf and  cultured in countries adjacent to it. OBJECTIVES: This study investigated proteolytic, amylase and lipase activities in the intestine of Sparidentex hasta captured from the  Persian Gulf. METHODS: 60 immature S...

The trap of the carnivorous plant Venus flytrap (Dionaea muscipula) catches prey by very rapid closure of its modified leaves. After the rapid closure secures the prey, repeated mechanical stimulation of trigger hairs by struggling prey and the generation of action potentials (APs) result in secretion of digestive fluid. Once the prey's movement stops, the secretion is maintained by chemical st...