Does behaviour play a role in house fly resistance to imidacloprid-containing baits?

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Seraydar KR, Kaufman PE

Does behaviour play a role in house fly resistance to imidacloprid-containing baits?

Med Vet Entomol. 2015 Mar;29(1):60-7. doi: 10.1111/mve.12095. Epub 2015 Jan 2.

PubMed ID
25557105 [ View in PubMed
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Abstract

The objective of this research was to examine the role and type of behavioural mechanisms that function in house fly, Musca domestica L. (Diptera: Muscidae), resistance to an imidacloprid-containing commercial fly bait, QuickBayt((R)) , using an insecticide-susceptible and an imidacloprid-resistant strain. Mortality and feeding behaviour were observed through choice bioassays of three post-imidacloprid selected house fly generations to determine whether flies would consume the bait in the presence of an alternative food source. Mortality rates in choice containers progressively decreased in post-selection flies as QuickBayt((R)) no-choice selections proceeded. There were no differences between the proportions of flies observed contacting QuickBayt((R)) and sugar, respectively, a finding that eliminates repellency as a mechanism of stimulus-dependent behavioural resistance. However, differences in QuickBayt((R)) consumption and subsequent mortality between choice and no-choice containers provided strong support for the evolution of consumption irritancy- or taste aversion-related behavioural resistance. The results of this study support the responsible rotation of insecticide bait formulations for house fly control.

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