Toxicity of Imidacloprid Against Melipona scutellaris (Latreille, 1811): Preliminary Risk Analysis-Reference-Cited by-同舟云学术

Toxicity of Imidacloprid Against Melipona scutellaris (Latreille, 1811): Preliminary Risk Analysis

Published:2024-02-23 Issue:1 Volume:71 Page:e9825
ISSN:2447-8067
Container-title:Sociobiology
language:
Short-container-title:Sociobiology

Author:

Costa Joyce O.,Brigante Janete,Vieira Eny M.

Abstract

The study aimed to evaluate the oral toxicity of the pesticide Imidacloprid Nortox 400 SC® on native bees (Melipona scutellaris) and assess the potential risk associated with visiting crops treated with this product. Biotest was conducted using eight concentrations with triplicates. The lethal concentration (LC50) was determined through oral exposure, and the oral lethal dose (LD50) was estimated based on dietary consumption values. The hazard quotient (HQ) was then calculated using the LD50 value. The LD50 value for imidacloprid Nortox 400 SC® at 6h was 0.025 μg a.i. bee-1. Regarding the environmental risk to the species, the acute oral risk quotient exceeded the trigger value by 200 to 480 times across all evaluated crops. Additionally, the risk of product drift exceeded the trigger value within 50 meters of harvest. These results suggest that, during phase 1, it was not possible to dismiss the possibility of foliar spraying affecting M. scutellaris bees.

Publisher

Universidade Estadual de Feira de Santana

Reference45 articles.

1. American Society of Agricultural Engineering. (2004). Spray nozzle classification by droplet spectra. St. Joseph: ASAE, p.411-14. (ASAE Standard S572 FEB04). Agência de Defesa Agropecuária do Paraná. (2022). http://www.adapar.pr.gov.br/arquivos/File/defis/DFI/Bulas/Inseticidas/imidacloprid_nortox.pdf. (accessed date: 08 April 2022).

2. Aleixo, K.P., Claudia, S., Nunes-Silva, B., Freitas, B. & Imperatriz –Fonseca, V. (2014). Guia ilustrado de abelhas polinizadoras no Brasil. http://www.semabelhasemalimento.com.br/wp-content/uploads/2015/02/Guia_abelhas-polinizadoras_02_junho_2014-1_web.pdf. (accessed date: 01 April 2022).

3. Allen-Wardell, G., Bitner, R., Burquez, A., Buchmann, T., Cane, J., Cox, P.A., Feinsinger, P., Ingram, M., Inouye, D., Jones, C.E., Kennedy, K., Kevan, P., Koopowitz, H., Medellin, R., Medellin-Morales, S., Pavlik, B., Tepedino, V., Torchio, P. & Walker, S. (1998). The potential consequences of pollinator declines on the conservation of biodiversity and stability of food crop yields. Conservation Biology, 12: 8-17.

4. Assis, J.C., Tadei, R., Menezes-Oliveira, V.B. & Silva-Zacarin, E.C.M. (2022). Are native bees in Brazil at risk from the exposure to the neonicotinoid imidacloprid? Environmental Research, 212 Part A: e113127.

5. Araújo, W.L., Godoy, M.S., Maracajá, P.B., Medeiros, A.C., Carlos, A.D., Silveira, D.C., Medeiros, A.P. & Paiva, A.C. (2018). Toxic effects of neonicotinoids on Apis mellifera L. workers (Hymenoptera: Apidae). International Journal of Development Research, 8: 20608-20612.