title: Laboratory evaluation of heavy metals stress on certain biochemical parameters of the aquatic insect, Sphaerodema urinator Duf. (Hemiptera: Belostomatidae).
abstract: The present work discussed the effect of lead and copper on certain biochemical parameters of the aquatic insect, Sphaerodema urinator, Duf. (Hemiptera: Belostomatidae). The insect samples were collected from fish farms of some volunteers. LC25 and LC50 were determined. The insects were exposed to three concentration levels (10, 20 and 30 mM) of lead nitrate and copper sulphate. The biochemical studies were carried out on the whole body homoginate. The results showed great reductions of the main metabolites (carbohydrates, lipid and protein). A decline in the alkaline phosphatase activity was detected, while an increase in the activity of acid phosphatase was found. Also the treated insects showed lower activities of GOT and GPT. In general, all estimated parameters were less than those of control.
authors.affiliation: Faculty of Science, Al-Azhar University, Cairo, Egypt. ahmed_bream@hotmail.com
authors.forename: A S
authors.initials: AS
authors.lastname: Bream
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D003300:Copper / Q000633:toxicity; D005399:Fishes / Q000469:parasitology; D006430:Hemiptera / Q000502:physiology; D007854:Lead / Q000633:toxicity; D019216:Metals, Heavy / Q000633:toxicity*; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism; D014867:Water / Q000469:parasitology
chemical_list: D019216:Metals, Heavy; D014867:Water; D007854:Lead; D003300:Copper; D000469:Alkaline Phosphatase; D010744:Phosphoric Monoester Hydrolases