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Vol.5 , No. 1, Publication Date: Apr. 10, 2018, Page: 12-17
 Against Mosquito Larvae in Kogi, North Central, Nigeria&description=The study was carried out to investigate the larvicidal potential of seeds and leaf crude extract of <i>A. indica</i> as an environmentally safe measure to control malaria vector. The early fourth-instar larvae of anopheles were reared in the laboratory. At varying level of larvae exposure to the crude seeds extract of <i>A. indica</i>; 1ml, 5ml, 10ml, 15ml and 20ml. 30%, 55%, 73%, 92% and 100% mortality rate were recorded at interval of 72 hours with LC<sub>50</sub> value (lethal concentration) of 4.4ml while the crude leaf extract presented 32%, 56.5% 76%, 86% and 100% mortality and LC<sub>50</sub> 4.5ml respectively. The result of the crude seed extracts of <i>A. indica</i> when compare to that of leaf extract were found to be an effective bioagent in controlling the propagation of anopheles larvae as there was no significant different (p < 0.05) in the level of their larvicidal activity and severity. The result therefore suggest <i>A. indica</i> as a sound candidate for the formulation of bioinsecticides to curb rising malaria scourge within the tropics while minimizing the cost and over dependence on synthetic insecticides that has long damaging effect on the environment.&picture=http://www.aascit.org/aascit/decorators/img/journal/919.jpg)
| [1] | Adobu Ugbede Shadrach, Department of Biology, Kogi State College of Education, Anpka, Kogi State, Nigeria. |
| [2] | Odoh Chuks Kenneth, Department of Microbiology, University of Nigeria, Nsukka, Enugu State, Nigeria. |
| [3] | Akpi Uchenna Kalu, Department of Microbiology, University of Nigeria, Nsukka, Enugu State, Nigeria. |
| [4] | Anya Francis, Department of Biological Science, Abubakar Tafawa Balewa University, Bauchi, Bauchi State, Nigeria. |
The study was carried out to investigate the larvicidal potential of seeds and leaf crude extract of A. indica as an environmentally safe measure to control malaria vector. The early fourth-instar larvae of anopheles were reared in the laboratory. At varying level of larvae exposure to the crude seeds extract of A. indica; 1ml, 5ml, 10ml, 15ml and 20ml. 30%, 55%, 73%, 92% and 100% mortality rate were recorded at interval of 72 hours with LC50 value (lethal concentration) of 4.4ml while the crude leaf extract presented 32%, 56.5% 76%, 86% and 100% mortality and LC50 4.5ml respectively. The result of the crude seed extracts of A. indica when compare to that of leaf extract were found to be an effective bioagent in controlling the propagation of anopheles larvae as there was no significant different (p < 0.05) in the level of their larvicidal activity and severity. The result therefore suggest A. indica as a sound candidate for the formulation of bioinsecticides to curb rising malaria scourge within the tropics while minimizing the cost and over dependence on synthetic insecticides that has long damaging effect on the environment.
Keywords
Azadirachta indica, Anopheles Mosquito, Larvicidal, Seed and Leaf Crude Extract, Environment, Bioinsecticides
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