Palatability of baits containing (S)-methoprene to Wasmannia auropunctata (Hymenoptera: Formicidae)

Michelle Montgomery, Cas Vanderwoude, Jasmyn LYNCH

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Wasmannia auropunctata Roger (Hymenoptera: Formicidae), little fire ant, is recognized as a serious pest ant species that affects agriculture, homes, gardens, and natural ecosystems in Hawaii, USA, and elsewhere. Anecdotal evidence suggests that insecticidal baits containing (S)- methoprene are not effective against this species. We examined whether W. auropunctata is repelled by bait formulations containing this compound and whether the addition of torula yeast (Candida utilis Lodder; Saccharomycetales: Saccharomycetaceae) increased palatability of these baits. Wasmannia auropunctata was found to be repelled by (S)-methoprene concentrations as low as 0.25% regardless of formulation. The addition of torula yeast (3% by weight) significantly increased worker recruitment to baits with and without (S)-methoprene. Our results indicate bait formulations using (S)-methoprene are likely to offer poor efficacy against Wasmannia auropunctata without the addition of a feeding stimulant such as torula yeast due to repellency of the active ingredient.
Original languageEnglish
Pages (from-to)451-455
Number of pages5
JournalFlorida Entomologist
Volume98
Issue number2
DOIs
Publication statusPublished - 2015

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Wasmannia auropunctata
methoprene
palatability
bait
baits
Formicidae
Torula
Hymenoptera
yeast
yeasts
ant
Saccharomycetales
Saccharomycetaceae
home garden
Candida utilis
phagostimulants
home gardens
active ingredients
Hawaii
pests

Cite this

Montgomery, Michelle ; Vanderwoude, Cas ; LYNCH, Jasmyn. / Palatability of baits containing (S)-methoprene to Wasmannia auropunctata (Hymenoptera: Formicidae). In: Florida Entomologist. 2015 ; Vol. 98, No. 2. pp. 451-455.
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abstract = "Wasmannia auropunctata Roger (Hymenoptera: Formicidae), little fire ant, is recognized as a serious pest ant species that affects agriculture, homes, gardens, and natural ecosystems in Hawaii, USA, and elsewhere. Anecdotal evidence suggests that insecticidal baits containing (S)- methoprene are not effective against this species. We examined whether W. auropunctata is repelled by bait formulations containing this compound and whether the addition of torula yeast (Candida utilis Lodder; Saccharomycetales: Saccharomycetaceae) increased palatability of these baits. Wasmannia auropunctata was found to be repelled by (S)-methoprene concentrations as low as 0.25{\%} regardless of formulation. The addition of torula yeast (3{\%} by weight) significantly increased worker recruitment to baits with and without (S)-methoprene. Our results indicate bait formulations using (S)-methoprene are likely to offer poor efficacy against Wasmannia auropunctata without the addition of a feeding stimulant such as torula yeast due to repellency of the active ingredient.",
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Palatability of baits containing (S)-methoprene to Wasmannia auropunctata (Hymenoptera: Formicidae). / Montgomery, Michelle; Vanderwoude, Cas; LYNCH, Jasmyn.

In: Florida Entomologist, Vol. 98, No. 2, 2015, p. 451-455.

Research output: Contribution to journalArticle

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