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

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

Title
Publication TypeJournal Article
Year of Publication1999
AuthorsPeng, R, Christian, KA, Gibb, KS
JournalInternational Journal of Pest Management
Volume45
Issue3
Pagination189 - 194
Date Published01/01/99
ISSN1366 5863
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.

URLhttp://espace.cdu.edu.au/view/cdu:187

Publications

RIEL Headlines

Pages

Jump to NRBL themeJump to CMEM themeJump to FEM themeJump to SMWC themeJump to TRF themeJump to RIEL home

Innovative Research University

© 2011-2013 Charles Darwin University
Research Institute for the Environment and Livelihoods
Privacy Policy
CRICOS Provider No. 00300K | RTO Provider No. 0373

Phone (+61) 8 8946 6413
Email riel@cdu.edu.au