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Biochemical effects of sublethal doses of cypermethrin on the sixth‐instar larvae of Tribolium castaneum (Herbst.)
Author(s) -
Saleem Mushtaq A.,
Shakoori A. R.
Publication year - 1986
Publication title -
archives of insect biochemistry and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 66
eISSN - 1520-6327
pISSN - 0739-4462
DOI - 10.1002/arch.940030505
Subject(s) - biology , cypermethrin , alkaline phosphatase , lactate dehydrogenase , glycogen , glutamate dehydrogenase , acid phosphatase , instar , urea , amylase , biochemistry , food science , larva , enzyme , pesticide , botany , glutamate receptor , agronomy , receptor
Effects of sublethal doses ie, 2, 4, 10, and 20 ppm of cypermethrin, were studied on the sixth‐instar larvae of Tribolium castaneum (Herbst.). Of all the biochemical parameters tested, the free amino acids and cholesterol content and the activity of amylase were found to be the most sensitive components. Glutamate pyruvate transaminase activity was elevated at all doses except 2 ppm. The activities of alkaline phosphatase and glutamate oxaloacetate transaminase and glucose content were raised significantly at doses of 10 and 20 ppm. Acid phosphatase activity and the soluble protein content increased at a dose of 20 ppm. Total lipid and triglycerides, however, decreased significantly at this sublethal dose. Other biochemical parameters, such as cholinesterase and lactate dehydrogenase activities and the total protein, urea, glycogen, DNA, and RNA contents, were not significantly affected by exposure to different doses of cypermethrin.