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The effect of colony isolation of the predacious ant, Oecophylla smaragdina (F.) (Hymenoptera: Formicidae), on protection of cashew plantations from insect pests

Peng, Renkang K., Christian, Keith A. and Gibb, Karen S. (1999). The effect of colony isolation of the predacious ant, Oecophylla smaragdina (F.) (Hymenoptera: Formicidae), on protection of cashew plantations from insect pests. International Journal of Pest Management,45(3):189-194.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 33 times in Scopus Article | Citations

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Title The effect of colony isolation of the predacious ant, Oecophylla smaragdina (F.) (Hymenoptera: Formicidae), on protection of cashew plantations from insect pests
Author Peng, Renkang K.
Christian, Keith A.
Gibb, Karen S.
Journal Name International Journal of Pest Management
Publication Date 1999
Volume Number 45
Issue Number 3
ISSN 1366 5863   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0032730057
Start Page 189
End Page 194
Total Pages 6
Place of Publication London, UK
Publisher Taylor & Francis
HERDC Category C1 - Journal Article (DEST)
Abstract Fierce boundary fights between Oecophylla smaragdina colonies were previously identified as the major factor limiting ant populations and the efficiency of ants as biological control agents. In order to determine the feasibility and effect ofpreventing boundary fights between colonies, experiments with full-, semi- and no-isolation of existing antcolonies in cashew plantations were done in 1996 and 1997. In a related experiment, ant colonies were transplanted from native vegetation to a cashew orchard. Trees with ant colonies which were fully isolated from other colonies were significantly less damaged by the main insect pests and produced significantly higher yield than those with ant colonies which were partly isolated or were not isolated. That was because fighting events between fully isolated ant colonies were eliminated, and the populations of these colonies were high throughout the cashew flowering and fruiting period. Trees in which O. smaragdina colonies were transplanted suffered little damage by the main insect pests and produced high quality nuts and panicles. However, trees which were protected by pesticides produced lower quality nuts and panicles, because these trees suffered damage by the tea mosquito bug, Helopeltis pernicialis , and the mango tip borer, Penicillaria jocosatrix . It is suggested that O. smaragdina colony isolation, combined with ant transplantation, is an effective means both to achieve high ant populations in cashew plantations and to obtain a high yield.
DOI http://dx.doi.org/10.1080/096708799227789   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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