Title:	Effects of insecticides used in strawberries on stingless bees Melipona quadrifasciata and Tetragonisca fiebrigi (Hymenoptera: Apidae).
Authors:	PIOVESAN, B. PADILHA, A. C. MORAIS, M. C. BOTTON, M. GRÜTZMACHER, A. D. ZOTTI, M. J.
Affiliation:	BRUNA PIOVESAN, Department of Crop Protection, Federal University of Pelotas, 354, Capão do Leão, 96010-900, Rio Grande do Sul, Brazil. bruna-piovesan@hotmail.com.; ALINE COSTA PADILHA, Department of Crop Protection, Federal University of Pelotas, 354, Capão do Leão, 96010-900, Rio Grande do Sul, Brazil.; MAÍRA CHAGAS MORAIS, Department of Crop Protection, Federal University of Pelotas, 354, Capão do Leão, 96010-900, Rio Grande do Sul, Brazil.; MARCOS BOTTON, CNPUV; ANDERSON DIONEI GRÜTZMACHER, Department of Crop Protection, Federal University of Pelotas, 354, Capão do Leão, 96010-900, Rio Grande do Sul, Brazil.; MOISÉS JOÃO ZOTTI, Department of Crop Protection, Federal University of Pelotas, 354, Capão do Leão, 96010-900, Rio Grande do Sul, Brazil.
Date Issued:	2020
Citation:	Environmental Science and Pollution Research, v. 27, n. 34, P. 42472-42480 July 2020.
Description:	The use of pesticides is considered one of the most important threats to pollinators, especially since they are widely used in agriculture for pest control. In the last years, several studies have reported severe secondary effects on various bee species, including exotic and native bees. In this study, lethal (mortality) and sublethal (locomotor activity) effects of insecticides and acaricides used in strawberries in Brazil (abamectin, novaluron, spinetoram, and thiamethoxam) were evaluated on the native stingless bees Melipona quadrifasciata and Tetragonisca fiebrigi. The results showed that the effects varied significantly according to the pesticide, type of exposure (oral or topical), and bee species. Through oral exposure, M. quadrifasciata was more susceptible to all insecticides except for abamectin, while in topical exposure, T. fiebrigi was more sensitive. Thiamethoxam followed by spinetoram and abamectin were the most lethal, regardless of species or exposure route; novaluron was not harmful at the highest tested dose. The locomotor activity of bees was altered in the presence of sublethal doses (LC10 and LC50) of all insecticides. Spinetoram and abamectin can be as much as toxic as thiamethoxam against M. quadrifasciata and T. fiebrigi in laboratory experiments. These findings should be confirmed in field experiments to define possibilities to combine pest control and pollinator management. In crops like strawberries, the selectivity of native pollinators should be considered. Keywords: Acute toxicity; Behavior effects; Fragaria x ananassa Duch; Native bees; Pesticides; Selectivity.
NAL Thesaurus:	Acute toxicity Pesticides
Keywords:	Behavior effects Fragaria x ananassa Duch Native bees Selectivity
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPUV)