Spectrophotometric analysis of the physiological effects of neem oil on amylase and non- specific esterase activities in the rice weevil Sitophilus oryzae L., corn weevil Sitophilus zeamais motsch and red flour beetle Tribolium castaneum herbst

Date

3-1989

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Adelina A. Barrion

Abstract

Determination o the effect of neem oil concentration on the amylase and easterase activities of S. oryzae, B. zeamais and T. castaneum was performed. toxicity tests showed an: increasing toxicity in S. oryza and S. zeamais and exhibited a slight toxicity in T. castaneum. Amylase activities are not significantly at low neem oil concentrations but significantly decreased at higher concentrations in S. oryzae and S. zeamais inn T castaneum. neem oil showed a non-significant effect on amylase activities. Esterase activities were not significant at low concentrations but a significant increase was observed at higher concentrations in the three insects. Thus, neem oil affected the amylase and esterase activities of the three storage grain pests.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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