INFLUENCE OF MURRAYA AND CELERY LEAVE EXTRACTS ON COWPEA BEETLES MORTALITY

摘要

Insecticidal activities of certain extracts from celery and murraya leaves were performed on cowpea beetles. The data show that the mortality percentage of the insects increased by increasing the concentration of chloroform and ethanol extracts of murraya and celery leaves. The mortalities induced by the two extracts indicated that the mortality potency was basically greater for the chloroform extract than ethanol extract. Histological studies were conducted on cowpea beetles treated with various concentrations of chloroform and ethanol extracts of celery and murraya leaves. The data demonstrated the occurrence of various histological abnormalities in fat body of the treated beetles by murraya extract. The histological examinations of cowpea beetles administered celery extract illustrate severe damage of insect brain tissues. Another set of experiments was carried out to assess the toxicity of ethanol and chloroform extracts at various levels on male Albino rats. In general, chloroform and ethanol extracts at 4% level possessed no significant effect on the activities of aspartate and alanine aminotransfereases, alkaline phosphatase and the level of creatinine. On the contrary, the extracts at 8% and 16% caused lowering effect on the enzyme activities and creatinine content.