search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


African Journal of Biomedical Research
Ibadan Biomedical Communications Group
ISSN: 1119-5096
Vol. 6, No. 1, 2003, pp. 49-53
Bioline Code: md03009
Full paper language: English
Document type: Research Article
Document available free of charge

African Journal of Biomedical Research, Vol. 6, No. 1, 2003, pp. 49-53

 en TOXICITY OF HEXANOLIC EXTRACT OF DENNETTIA TRIPETALA (G. BAXER) ON LARVAE OF AEDES AEGYPTI (L)
ANYAELE, O. O. & AMUSAN A A S

Abstract

The hexanolic extract of Dennellia tripetala was tested for acute toxicity on 3rd Instar larvae of Aedes aegypti reared in the Laboratory at the Department of Zoology, University of Ibadan,. Six sets of graded concentrations 30pprn, 50ppm 60pprn 70pprn, 80ppm and 90ppm were tested for acute toxicity on the 3 rd instar larvae of Aedes agypti and total percentage mortalities recorded at intervals of 12, 24, 48, 72 and 96 hours in each test. Effects of sunlight and ultraviolet radiation were tested on the potency of the extract, at 2, 4 and 8 hours respectively. The mean lethal concentration LC5O was 44.7 ± 0.82ppm. The toxicity of the extract does not persist for a longtime; the potency of the extract was slightly affected by sunlight while the potency was activated by ultraviolet radiation.

Keywords
Dennetia tripeta acute toxicity. 3rd instar larvae, Aedes aegvpti Median Lethal Concentration. LC 50

 
© Copyright 2003 - Ibadan Biomedical Communications Group

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil