Larvicidal and Pupicidal Activities of Alizarin Isolated from Roots of Rubia cordifolia Against Culex quinquefasciatus Say and Aedes aegypti (L.) (Diptera: Culicidae)

Larvicidal and Pupicidal Activities of Alizarin Isolated from Roots of Rubia cordifolia Against Culex quinquefasciatus Say and Aedes aegypti (L.) (Diptera: Culicidae)

The mosquitocidal activities of different fractions and a compound alizarin from the methanol extract of Rubia cordifolia roots were evaluated on larvae and pupae of Culex quinquefasciatus Say and Aedes aegypti (L.) (Diptera: Culicidae). Larvae and pupae were exposed to concentrations of 2.5, 5.0, 7...

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Bibliographic Details
Published in:Neotropical entomology Vol. 45; no. 4; pp. 441 - 448
Main Authors: Gandhi, M R, Reegan, A D, Ganesan, P, Sivasankaran, K, Paulraj, M G, Balakrishna, K, Ignacimuthu, S, Al – Dhabi, N A
Format: Journal Article
Language:English
Published: New York Springer US 01-08-2016
Subjects:
Aedes
Agriculture
Animals
Anopheles
Anthraquinones - pharmacology
Biomedical and Life Sciences
Culex
Entomology
Insecticides
Larva
Life Sciences
Mosquito Control - methods
Plant Extracts - pharmacology
Plant Leaves
Public Health
Rubia - chemistry
lymphatic filariasis
Bioassay
mosquito control
Zika virus
sustainable pest control
dengue
chikungunya
vector control
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Summary:The mosquitocidal activities of different fractions and a compound alizarin from the methanol extract of Rubia cordifolia roots were evaluated on larvae and pupae of Culex quinquefasciatus Say and Aedes aegypti (L.) (Diptera: Culicidae). Larvae and pupae were exposed to concentrations of 2.5, 5.0, 7.5 and 10 ppm for fractions and 0.5, 1.0, 1.5 and 2.0 ppm for compound. After 24 h, the mortality was assessed and the LC 50 and LC 90 values were estimated for larvae and pupae. Among the 23 fractions screened, fraction 2 from the methanol extract of R. cordifolia showed good mosquitocidal activity against C. quinquefasciatus and A. aegypti . LC 50 and LC 90 values of fraction 2 were 3.53 and 7.26 ppm for C. quinquefasciatus and 3.86 and 8.28 ppm for A. aegypti larvae, and 3.76 and 7.50 ppm for C. quinquefasciatus and 3.92 and 8.05 ppm for A. aegypti pupae, respectively. Further, the isolated compound alizarin presented good larvicidal and pupicidal activities. LC 50 and LC 90 values of alizarin for larvae were 0.81 and 3.86 ppm against C. quinquefasciatus and 1.31 and 6.04 ppm for A. aegypti larvae, respectively. Similarly, the LC 50 and LC 90 values of alizarin for pupae were 1.97 and 4.79 ppm for C. quinquefasciatus and 2.05 and 5.59 ppm for A. aegypti pupae, respectively. The structure of the isolated compound was identified on the basis of spectroscopic analysis and compared with reported spectral data. The results indicated that alizarin could be used as a potential larvicide and pupicide.
ISSN:1519-566X
1678-8052
DOI:10.1007/s13744-016-0386-x