Temperature and the Action of Pyrethrum in the American Cockroach123

Blum, Murray S.; Kearns, C. W.

doi:10.1093/jee/49.6.862

Cited by 56 publications

(23 citation statements)

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“…However, fenvalerate, which had the highest positive temperature coefficient, had a smaller effect on oxygen consumption than flucythrinate (McKee and Knowles, 1984), and the latter compound gave a smaller positive temperature coefficient. Penetration of pyrethrins through the insect cuticle is greater at higher temperatures (Blum and Kearns, 1956), but we are unaware of similar results with mites.…”

Section: Discussionmentioning

confidence: 83%

Effect of posttreatment temperature on the toxicity of five synthetic pyrethroids toTetranychus urticae Koch (Acari: Tetranychidae)

Subramanyam

Cutkomp

1987

Exp Appl Acarol

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The synthetic pyrethroids bioallethrin, d-phenothrin, and fenvalerate, when tested by the slidedip technique, were more toxic to female two-spotted spider mites, Tetranychus urticae Koch, at 30~ than at 20~ LC~o values differed by 1.7-, 3.8-, and 5.3-fold, respectively. Two other synthetic pyrethroids, flucythrinate and cyfluthrin, gave similar toxicity values at these two temperatures. The greater sensitivity of T. urticae at a warmer temperature to the first three pyrethroids differs from insect toxicity studies, which often show negative temperature relationships.

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Section: Discussionmentioning

confidence: 83%

Effect of posttreatment temperature on the toxicity of five synthetic pyrethroids toTetranychus urticae Koch (Acari: Tetranychidae)

Subramanyam

Cutkomp

1987

Exp Appl Acarol

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“…8,9) However, DDT and pyrethroids have negative temperature coecients for some insects. [10][11][12][13][14] Other insecticides, such as lindane, have positive temperature coe cient for certain insects and negative temperature coe cients for others. 15,16) Limited information is available on the in uence of temperature on the toxicity of insecticides to Apolygus lucorum (Heteroptera: Miridae), the main plant bug species in areas of mixed crops of fruit and cotton.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on the toxicity of several insecticides to <i>Apolygus lucorum</i> (Heteroptera: Miridae)

Gao

Dang

et al. 2012

J. Pestic. Sci.

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“…Temperature has been demonstrated to impact the efÞcacy of pyrethrins, with greater efÞcacy at cooler temperatures (Blum and Kearns 1956). However, Kharel (2013) did not Þnd a signiÞcant impact on the efÞcacy of a synergized pyrethrins aerosol at temper-atures between 22 and 32ЊC.…”

Section: Discussionmentioning

confidence: 99%

Spatial Pattern in Aerosol Insecticide Deposition Inside a Flour Mill

2014

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Aerosol insecticides are commonly used for management of stored-product pests inside food facilities, but the physical complexity of the interior of most food facilities may inßuence the dispersal and deposition of droplets and create spatial variation in dosage. The spatial pattern in aerosol deposition was evaluated inside a ßour mill using a high density grid of bioassay insects. Three insecticides, Aerotech with NyGuard and Pyrocide 100 ϩ Diacon II, both pyrethrin and insect growth regulator combinations, and Vap20, an organophosphate, were evaluated at normal (27ЊC) and high (40ЊC) target temperatures. Using a newly developed efÞcacy index, there was spatial pattern to aerosol deposition detected for the pyrethrin insecticides and the pattern differed between aerosols and temperatures. Walls and corners, especially behind the direction of application, were especially vulnerable to zones of lower efÞcacy, and open areas in center of the room tended to have the highest efÞcacy. The organophosphate insecticide provided complete efÞcacy at all bioassay dish locations, probably due in part to its vapor toxicity. Using boxes 1 m in depth and 5, 10, or 20 cm in height and open on only one end, it was shown that aerosol dispersal under horizontal surfaces could be impacted by gap height, aerosol, and temperature. These results show the potential for spatial variation in aerosol efÞcacy within a food facility and identify locations with the potential to receive a lower insecticide dosage. To increase overall efÞcacy, these locations may be targeted for additional interventions to provide more uniform pest population suppression.

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Temperature and the Action of Pyrethrum in the American Cockroach123

Cited by 56 publications

References 0 publications

Effect of posttreatment temperature on the toxicity of five synthetic pyrethroids toTetranychus urticae Koch (Acari: Tetranychidae)

Effect of posttreatment temperature on the toxicity of five synthetic pyrethroids toTetranychus urticae Koch (Acari: Tetranychidae)

Effect of temperature on the toxicity of several insecticides to <i>Apolygus lucorum</i> (Heteroptera: Miridae)

Spatial Pattern in Aerosol Insecticide Deposition Inside a Flour Mill

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