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Journal of Biotechnology & Biomaterials | ISSN: 2155-952X | Volume: 8
3
rd
World Biotechnology Congress
December 03-04, 2018 Sao Paulo, Brazil
Effect of medicinal plant pesticide and microbial insecticides for the control of Dengue vector,
Aedes aegypti
(Insecta: Diptera: Culicidae)
P Thiyagarajan
Bharathidasan University, India
M
osquitoes can transmit more diseases than any other group of arthropods and affect millions of people throughout the
world. Dengue is an acute viral infection with potentially fatal complications. Dengue fever is spread by the bite of infected
Aedes
mosquitoes.
Aedes aegypti
mosquito is the principal vector of the viruses responsible for urban yellow fever, dengue, dengue
hemorrhagic fever, as well as Zika and Chikungunya in Brazil. To prevent the proliferation of mosquito-borne diseases and to
improve the quality of the environment and public health, mosquito control is essential. Biopesticides provide an alternative to
synthetic pesticides because of their generally low environmental pollution, low toxicity to humans and other advantages. Many
herbal products have been used as natural insecticides before the discovery of synthetic organic insecticides and also some of the
biological control agents have been evaluated against larval stages of mosquitoes, of which the most successful ones comprise bacteria
such as
Bacillus megaterium
. The purpose of this investigation is to determine the larvicidal and pupicidal activity of
Justicia adhatoda
and microbial insecticide,
Bacillus megaterium
on dengue vector, Aedes aegypti. Lethal dose concentrations (LC50 and LC90) were
calculated for different larval instars and pupal stages. Field trials were conducted at the breeding sites of the A. aegypti and the
mortality was observed after 72 hours of treatment.
rajanphd2004@yahoo.comJ Biotechnol Biomater 2018, Volume: 8
DOI: 10.4172/2155-952X-C7-107