Effect of insecticide treatment time on mortality of the buthid scorpion Tityus stigmurus

Brito-Almeida, Thayna R.; Andrade, Raissa M. de; Santos, Adriana Barbosa dos; Albuquerque, Cleide Maria Ribeiro de; Lira, André Felipe de Araújo

doi:10.1007/s42690-022-00792-9

Cited by 1 publication

(4 citation statements)

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“…We did not test the effect of the pesticide in open areas and the environmental context may be determinant. Recently, Brito-Almeida et al [8] have shown that the scorpion T. stigmurus died when in contact with areas treated with the pesticide Fipronil. They also showed that mortality rate decreased after the scorpion had been exposed to areas with Fipronil for PLOS ONE eight hours.…”

Section: Discussionmentioning

confidence: 99%

“…This, foraging behavior also reduces the chances that pesticide will come into contact with the scorpion. Moreover, Brito-Almeida et al [8] have shown that, at least with T. stigmurus and the pesticide Fipronil, there is no lethal effect after 24h of application. These factors all reduce the chances of efficiency of a pesticide despite its lethal effect under specific circumstances.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Only immature individuals avoided areas with pesticides and, although scorpions have had behavioral reactions to the pesticide, they would regain their normal posture after a few days. Brito-Almeida et al [ 8 ] have evaluated how time elapsed after application of the pesticide Fipronil affects mortality rates in T . stigmurus , finding that within three hours mortality is high and that after 24h it is ineffective.…”

Section: Introductionmentioning

confidence: 99%

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Experimental approach to the dislodging effect and the mortality of a pesticide in the yellow scorpion Tityus serrulatus

Murayama¹,

Barbosa²,

Willemart³

2023

PLoS ONE

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Accidents with scorpions are a problem in several regions of the world. In Brazil, the number of accidents is sometimes higher than 160k/year, and the responsible for most accidents and deaths is the yellow scorpion Tityus serrulatus. Unfortunately, there are few publications testing the effectiveness of most of the products for chemical control of scorpions. Using the pesticide Bifentol, we tested: I–the effect of the pesticide on the mortality of T. serrulatus, II–whether the scorpion avoids areas with pesticide and, III–whether it leaves the shelter if pesticide is applied. In the first experiment, we applied pesticide or water on the dorsal region of the scorpion or substrate according to treatment. For five days we noted whether the scorpion slide (dead) or clung to the substrate (alive) after turning the arena vertically to left and right. After five days, no pesticide-treated scorpions were alive while all water-treated scorpions were. In the second experiment, we placed two shelters, applied pesticide and/or water inside the shelter. We then released a scorpion on the opposite side. We scored latency to enter one of the shelters and the choice made by the scorpions. We did not find differences in latency or in the choice made. In the third experiment, we applied the pesticide or water to the shelter where the scorpion was being maintained, and, on the following day, we recorded whether the scorpion had left the shelter. None of the scorpions left the shelters and only one died. Thus, we obtained evidence that a pesticide can kill scorpions, but we did not find a dislodging effect.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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