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The crazy ant (Anoplolepis longipes (Jerd.) (Hymenoptera, Formicidae)) in Seychelles, and its chemical control

Published online by Cambridge University Press:  10 July 2009

T. Lewis
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts AL5 2JQ, U.K.
J. M. Cherrett
Affiliation:
Department of Applied Zoology, University College of North Wales, Bangor, Caerns, U.K.
I. Haines
Affiliation:
Department of Agriculture, Victoria, Mahé, Seychelles
Jennifer B. Haines
Affiliation:
Department of Agriculture, Victoria, Mahé, Seychelles
P. L. Mathias
Affiliation:
Ministry of Agriculture, Fisheries & Food, A.D.A.S., Starcross, Devon, U.K.

Abstract

The distribution and spread, interrelationship with other animals, and economic importance (mainly domestic) of Anoplolepis longipes (Jerd.) in Mahé, Seychelles, after its accidental introduction about 13 years ago, are described. Temporary control measures based on solid and liquid baits formulated largely from local materials were devised. Baits containing aldrin at 2·5% a.i. and applied at 10 kg (solid) and 20 kg (liquid)/ha decreased the abundance of foragers for about 50 days after treatment. Other insecticides tested were less effective. Bendiocarb (0·04% a.i.) sprayed onto walls of houses and buildings provided protection for about a week outdoors, and for up to two months indoors. There are good prospects for the eventual decline and stability of populations of this ant on Mahé.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1976

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