Bioactivity evaluation of Melaleuca cajuputi (Myrtales: Myrtaceae) crude extracts against Aedes mosquito

Azlinda Abu Bakar, . Bioactivity evaluation of Melaleuca cajuputi (Myrtales: Myrtaceae) crude extracts against Aedes mosquito. pp. 303-313. ISSN 1511-3701

Melaleuca cajuputi crude extract in four different solvents viz dichloromethane ethyl acetate hexane and methanol were evaluated for their insecticidal properties against Aedes aegypti and Aedes albopictus mosquito. Bioassay against larva and adult mosquito was done following World Health Organizations guidelines. Late 3rd and/or early 4th instar of Aedes larvae were assayed for different concentrations ranging from 10 to 120 mg/L of M. cajuputi crude extract. Larvicidal effects were observed in dichloromethane hexane and methanol. Dichloromethane gave the highest of mean mortality against Ae. aegypti (12.6 0.98) and Ae. albopictus (10.2 0.37) with LC‚‚ of 104.8 mg/L and 106 mg/L respectively. The adulticidal bioassay was tested against 3 - 5 days old of female mosquitoes with the range concentrations from 0.04 to 6.21 mg/cm2. Amongst solvents used extracts of dichloromethane and hexane showed effects against the adult mosquito. Extract in hexane gave 100 mortality against both Aedes with LC‚‚ of 0.015 mg/cm (Ae. aegypti) and 0.022 mg/cm (Ae. albopictus). In conclusion the extract of M. cajuputi could be exploited in the development of potential plant-based products in controlling dengue Aedes vectors particularly in the adult mosquito.

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Abstract

Melaleuca cajuputi crude extract in four different solvents viz dichloromethane ethyl acetate hexane and methanol were evaluated for their insecticidal properties against Aedes aegypti and Aedes albopictus mosquito. Bioassay against larva and adult mosquito was done following World Health Organizations guidelines. Late 3rd and/or early 4th instar of Aedes larvae were assayed for different concentrations ranging from 10 to 120 mg/L of M. cajuputi crude extract. Larvicidal effects were observed in dichloromethane hexane and methanol. Dichloromethane gave the highest of mean mortality against Ae. aegypti (12.6 0.98) and Ae. albopictus (10.2 0.37) with LC‚‚ of 104.8 mg/L and 106 mg/L respectively. The adulticidal bioassay was tested against 3 - 5 days old of female mosquitoes with the range concentrations from 0.04 to 6.21 mg/cm2. Amongst solvents used extracts of dichloromethane and hexane showed effects against the adult mosquito. Extract in hexane gave 100 mortality against both Aedes with LC‚‚ of 0.015 mg/cm (Ae. aegypti) and 0.022 mg/cm (Ae. albopictus). In conclusion the extract of M. cajuputi could be exploited in the development of potential plant-based products in controlling dengue Aedes vectors particularly in the adult mosquito.

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Item Type:	Article
AGROVOC Term:	Melaleuca
AGROVOC Term:	Myrtales
AGROVOC Term:	Myrtaceae
AGROVOC Term:	Phytochemistry
AGROVOC Term:	Evaluation techniques
AGROVOC Term:	Plant extracts
AGROVOC Term:	Solvents
AGROVOC Term:	Aedes
AGROVOC Term:	Methanol
AGROVOC Term:	Mosquitoes
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9346

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