Effectiveness of thiamethoxam geI bait against the bIack crazy ant, Paratrechina Iongicornis (LatreiIIe)

Issue Date

4-2010

Abstract

The efficacy of thiamethoxam geI bait was tested against the black crazy ant [Paratrechina longicornis (LatreiIIe) using laboratory colonies. Bait equivalent to 100 ppm was offered to colonies with an initial colony index of at least 12. Orientation, visits, changes in foraging activity, agitation or other similar behavioral responses and mortality of brood, workers and queens were monitored up to 72 hrs after bait. Results showed that the black crazy ants were attracted to the gel bait with several foraging workers aggregating at the baits within minutes after introduction. Colony elimination was achieved after a week in the second trial but it took two weeks during the first trial. The bait effectively reduced ant trails and activity, and adversely dropped colony index within a day. Queens, as expected, were the last to die in a colony. In separate preliminary tests, colony elimination appears to be possible also for the yellow-red crazy ant Anoplolepis gracilipes (Smith) and the black ant Dolichoderus thoracicus (Smith) but not for the tropical fire ant Solenopsis geminata (Fabricius). Further tests for these three ant species need to be conducted for their comparative responses to thiamethoxam geI baits.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

24

Issue

1

Page

77-86

Document Type

Article

Frequency

semi-annually

Physical Description

graphs, illustrations

Language

English

En – AGROVOC descriptors

FORMICIDAE; SOLEPNOSSIS; THIAMETHOXAM; BAITS; PEST CONTROL BAITS; ATTRACTANTS; PEST CONTROL

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