title: [Effect of different environmental factors on the activities of digestive enzymes and alkaline phosphatase of Macrobrochium nipponense].
abstract: The activities of digestive enzymes and alkaline phosphatase from the hepatopancreas of Macrobrochium nipponense were determined under different environmental factors (calcium concentrations 20 mg.L-1, 35 mg.L-1, 60 mg.L-1, 80 mg.L-1, 150 mg.L-1; salinity 7@1000, 14@1000, pH 7.6, 8.8, 9.8). The results showed that higher Ca2+ concentration could enhance the pepsin activity, but inhibit the trysin-like activity in hepatopancreas of M. nipponense. The activities of pepsin, trysin-like, alkaline phosphatase in hepatopancreas of M. nipponense were higher under salinity of 14@1000 than under salinity of 7@1000 and 20@1000. It showed that the activities of digestive enzymes and alkaline phosphatase of shrimp increased gradually with increasing pH value from 7.6 to 9.8.
authors.affiliation: Department of Biology, Beijing Normal University, Beijing 100875. Wangwn@mail.hbu.edu.cn
authors.forename: Weina
authors.initials: W
authors.lastname: Wang
authors.forename: Ruyong
authors.initials: R
authors.lastname: Sun
authors.forename: Anli
authors.initials: A
authors.lastname: Wang
authors.forename: Lei
authors.initials: L
authors.lastname: Bao
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism; D000469:Alkaline Phosphatase / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D033364:Decapoda / Q000187:drug effects* / Q000201:enzymology; D006863:Hydrogen-Ion Concentration; D010434:Pepsin A / Q000378:metabolism; D012965:Sodium Chloride; D014357:Trypsin / Q000378:metabolism
chemical_list: D012965:Sodium Chloride; D000469:Alkaline Phosphatase; D000135:Acid Phosphatase; D014357:Trypsin; D010434:Pepsin A; D002118:Calcium