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  • Title: Laboratory study on the mosquito larvicidal properties of leaf and seed extract of the plant Agave americana.
    Author: Dharmshaktu NS, Prabhakaran PK, Menon PK.
    Journal: J Trop Med Hyg; 1987 Apr; 90(2):79-82. PubMed ID: 2882030.
    Abstract:
    Experiments on the leaf extract tested against three mosquito species led to 100% mortality of stage 4 Anopheles, Aedes and Culex larvae at a concentration of 0.08% within 24-48 h, whereas 100% mortality of stage 1 larvae occurred at lower concentrations: 0.0032% for Aedes aegypti, 0.016% for Culex quinquefasciatus and 0.08% for Anopheles stephensi, and was more rapid. At the end of 24 h, the highest dilution of the seed extract studied (1:200) produces a larval mortality of 100% for Anopheles and Aedes and 56% for Culex spp., when 4th instar larvae were exposed at room temperature. The comparative mortality in the control group was negligible. One hundred per cent mortality of Anopheles larvae took place by the end of 10 h, and of Aedes larvae by 17 h, at a dilution of 1:200 with water.
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