Publication: Three indigenous Thai medicinal plants for control of Aedes aegypti and Culex quinquefasciatus.
Issued Date
2005-12-01
Resource Type
ISSN
01251562
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2-s2.0-33646177082
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Mahidol University
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SCOPUS
Bibliographic Citation
The Southeast Asian journal of tropical medicine and public health.. Vol.36 Suppl 4, (2005), 167-175
Suggested Citation
P. Lapcharoen, C. Apiwathnasorn, N. Komalamisra, P. Dekumyoy, K. Palakul, Y. Rongsriyam Three indigenous Thai medicinal plants for control of Aedes aegypti and Culex quinquefasciatus.. The Southeast Asian journal of tropical medicine and public health.. Vol.36 Suppl 4, (2005), 167-175. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/16667
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Title
Three indigenous Thai medicinal plants for control of Aedes aegypti and Culex quinquefasciatus.
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Abstract
The potential larvicidal activity and insect growth regulator (IGR) properties of three selected indigenous medicinal Thai plants were tested against two species of mosquito with special reference to the late 3rd and early 4th instar larvae (L3 and L4, respectively). In case of larvicidal activity, Thevetia peruviana was the most potent, followed by Pueraria mirifica, and Butea superba was the least effective. In all cases, the late 3rd instar was more susceptible than the early 4th instar larvae, and the 48-hours exposure yielded more potent larvicidal activity than 24-hours exposure. However, at sublethal dosages, both P. mirifica and B. superba showed some dispersed effects interfering with ecdysis. A variety of toxic effects were observed and recorded in eight categories according to the stage of metamorphosis when death occurred. P. mirifica rendered the main deleterious effects in the pupa-adult period in both instar of Ae. aegypti and Cx. quinquefasciatus, whereas B. superba showed highest effect in black-pupa period of the late 3rd instar larval stage. The results were reversed for the early 4th instar larvae of both species of mosquito as the main effect appeared in the pupa-adult category. The overall results indicated that T. peruviana did not show any IGR properties; whereas, P. mirifica and B. superba seemed to exhibit the juvenile hormone type activity which resulted in abnormal death at various stages of development. B. superba was more promising than P. mirifica, and Ae. aegypti was about 2 times more susceptible than Cx. quinquefasciatus. In addition, L3 was always more susceptible than L4 with both mosquito species.