Spectrophotometric analysis of the effects of azadirachtin on amylase activity and total proteins in rice weevil, Sitophilus oryzae L., corn weevil, Sitophilus zeamais Mots, and flour beetle, Tribolium castaneum Herbst

Date

9-1989

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Adelina A. Barrion

Abstract

The test on the toxicity of azadirachtin showed that S. zeamais was most sensitive and susceptible followed by T. castaneum and S. oryzae. The physiological effects of azadirachtin on amylase activity and total proteins in stored grain pests were determined through spectrophotometry. The amylase activities in treated insects, S. oryzae, S. zeamais and T. castaneum generally increased compared with those in the control. In T. castaneum a marked increased in amylase activity was observed. The total protein content of the three species treated with azadirachtin generally decreased compared with the control. Azadirachtin, therefore, increased the amylase activity but decreased the total protein content of the three stored grain insect species.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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