Feeding response of subterranean termite, Coptotermes curvignathus (Isoptera : Rhinotermitidae) to Azadirachta excelsa (Meliaccae) extractives and its timber

Sajap Ahmad S., and Maria Lourdes T. Lardizabal, and Ahmad Faujan B., and Sahri Mohd H. , (2006) Feeding response of subterranean termite, Coptotermes curvignathus (Isoptera : Rhinotermitidae) to Azadirachta excelsa (Meliaccae) extractives and its timber. Sociobiology, 48 (2). pp. 447-455. ISSN 0361-6525

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Abstract

Feeding response of subterranean termite, Coptotermes curvignathus Hohngren (Isoptera: Rhinotermitidae) to Azadirachta excelsa (Jack) Jacobs (Meliaceae) extractives and its timber was studied. The results show that both methanol and hexanc extracts from leaves and bark significantly inhibited feeding activity and survival rates of the termites. At 1000 ppm, the amount ofpaper consumed was reduced by 27%. The mortality rates from leaf-hexane and leaf-methanol extractives were 26.6 and 17.1%, respectively, and from bark-hexane and bark-methanol were 34.4 and 28.9%, respectively. Mortality from the control was less than 10%. A choice study conducted in laboratory and field shows that timber from A excelsa was the least preferred by the termites. Its susceptibility was equivalent to that of a medium hardwood, Koompassia malaccensis or three and four times less susceptible than that of Hevea brasiliensis and Pinus caribaea, respectively.

Item Type:Article
Uncontrolled Keywords:Azadirachta excelsa, Extractives, Subterranean termite, Coptotermes curvignathus
Subjects:?? QL461-599.82 ??
Divisions:SCHOOL > School of International Tropical Forestry
ID Code:1091
Deposited By:IR Admin
Deposited On:06 Oct 2011 11:46
Last Modified:23 Feb 2015 09:58

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