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Publication Type
Book Chapter
Author, Analytic
Mansingh, Ajai; Williams, L.A.D.
Author Affiliation, Ana.
Natural Products Institute
Title, Analytic
Pesticide potential of tropical plants - VIII: Acute toxicity and inhibition of oogenesis in the ticks Boophilus Microplus Canst and Amblyomma Cajennense FAB. by the extracts of Azadirachta Indica A. Juss and Artocarpus Altilis Parks
Medium Designator
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Author, Monographic
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Title, Monographic
Utilization of natural products in Developing Countries: Trends and needs edited by Ajai Mansingh, Ajai, Donald E Young, Donald E. , Trevor H.Yee, Rupija Delgoda, Dwight E. Robinson,Dwight E., Errol Y. Morrison, Henry I.Lowe.
Reprint Status
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Edition
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Place of Publication
Kingston, Jamaica
Publisher Name
The Natural Products Institute, University of the West Indies, Kingston
Date of Publication
2002
Volume ID
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Issue ID
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Page(s)
231-39
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Abstract
The Ld95 (g/tick) values of the crude ethanol extracts (CE) of the leaves of Artocarpus altilis (Aa) and the kernels of Azadirachta indica (Ai), and their hexane (HF) and methanol (MF) fractions were 2.87.3.94, 4.13, and 5.33, 6.71, and 3.06, respectively, for Booophilus microplus, and 43.76, 118.56 and 98.41, and 51.26, 78.26 and 33.58, respectively, for Amblyomma cajennense. The order of inhibitory effect on the oviposition by the ticks (IOd95 (g/tick, figures in parentheses) by various fractions was: CE of Aa (0.95) > MF of Aa (1.36) > HF of Aa 2.72 > MF of Ai (3.53) > CE of Ai (5.5) > HF of Ai (6.76) on B. microplus; and CE of Aa (4.3) > CE of Ai (11.12) > MF of Aa (12.02) > HF of Aa (15.99) > HF of Ai (23.4) > MF of Ai (52.57) on A, cajennense. The dose inducing 95% malformations of eggs (EMd95) for B. microplus were 2.13, 6.34 and 9.82 g/tick of CE, HF and MF of Aa, respectively, and 5, 5.5 and 5.4 g/tick for the three fractions of Ai, respectively; and 8.8, 11.1 and 9.37, 10.16, 11.43 and 17.54 g/tick of CE, HF and MF of Aa and Ai respectively, for A. cajennense. The wt of eggs oviposited by B. microplus, treated with different fractions of the two plants, were reduced by 44 to 55%, and by 35 to 47% in and A. cajennense. Over 70% of the eggs oviposited by the ticks treated with the CEs of the two plants and their fractions, were non-viable. The impact was more on B. microplus, than on A. cajennense. (AU)....
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