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Pesticidal potential of tropical plants—II. Acaricidal activity of crude extracts of several Jamaican plants
Topical application of crude ethanol extracts (CEs) of the leaves of 43 of 51 Jamaican plants produced varying degrees of multiple acaricidal effects on engorged Boophilus microplus Canst., including mortality (M), inhibition of oviposition (IO) and inhibition of embryogenesis (IE). Acaricidal indic...
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Published in: | Insect science and its application 1998-06, Vol.18 (2), p.149-155 |
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Main Authors: | , |
Format: | Article |
Language: | English |
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Online Access: | Get full text |
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Summary: | Topical application of crude ethanol extracts (CEs) of the leaves of 43 of 51 Jamaican plants produced varying degrees of multiple acaricidal effects on engorged Boophilus microplus Canst., including mortality (M), inhibition of oviposition (IO) and inhibition of embryogenesis (IE). Acaricidal indices (AI) ranged from 50 to 100 for the CEs of 29 plants, 38 to 47 for 9 plants and from 0 to < 25 for 13 plants. The most active CEs, in decreasing order of activity (AI values in parentheses) were those of: Simarouba glauca (100), Symphytum officinale (99), Nicotiana tabacum (95), Hibiscus rosa-sinensis (93), Ervatamia divaricata = Ricinus communis (82), Salvia serotina (80), Stachytarpheta jamaicensis (79), Blighia sapida = Ocimum micranthum (76), Spigelia anthelmia (75), Cycloptis semicordata (74), Mormordica charantia (71), Bontia daphnoides (69), Azadirachta indica (68), Capsicum annum = Catharantus roseus = Petiveria alliacea (66), Gliricida sepium (64), Lippia alba (62), Cuscuta americana = Erythrina corallodendrum (61), Piper amalago (60), Cannabis sativa = Cecropia peltata (58), Dioscorea polygonoides (56), Artocarpus altilis (53), Crotalaria retusa (51), Citrus aurantium (50). L'application par voie de contact des extraits bruts à l'éthanol obtenus des feuilles de 43 des 51 plantes Jamaïcaines, sur la tique gorgée, Boophilus microplus Canst., produisait des effets acaricides à des degrès variés dont: la mortalité, l'inhibition de ponte et d'embryogenèse. Les indices acaricides se rangeaient de 50 à 100 pour les extraits obtenus de 29 plantes, de 38 à 47 pour 9 plantes, et de 0 à 25 pour 13 plantes. Dans un ordre décroissant, les extraits les plus actifs (indice acaricide entre parenthèses) ont été obtenus chez les espèces suivantes: Simarouba glauca (100), Symphytum officinale (99), Nicotiana tabacum (95), Hibiscus rosa-sinensis (93), Ervatamia divaricata = Ricinus communis (82), Salvia serótina (80), Stachytarpheta jamaicensis (79), Blighia sapida = Ocimum micranthum (76), Spigelia anthelmia (75), Cycloptis semicordata (74), Mormordica charantia (71), Bontia daphnoides (69), Azadirachta indica (68), Capsicum annum = Catharantus roseus = Petiveria alliacea (66), Gliricida sepium (64), Lippia alba (62), Cuscuta americana = Erythrina corallodendrum (61), Piper amalago (60), Cannabis sativa = Cecropia peltata (58), Dioscorea polygonoides (56), Artocarpus altilis (53), Crotalaria retusa (51), Citrus aurantium (50). |
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ISSN: | 0191-9040 1742-7584 1742-7592 |
DOI: | 10.1017/S1742758400007797 |