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Effects of a relevant concentration of field of thiamethoxam in intestine and brain of Apis mellifera honey after exposure during the larval phase

Grant number: 15/09691-1
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2015
Effective date (End): December 31, 2016
Field of knowledge:Biological Sciences - Zoology - Applied Zoology
Principal Investigator:Osmar Malaspina
Grantee:Priscila Sepulveda Friol
Host Institution: Centro de Estudos de Insetos Sociais (CEIS). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil


Apis mellifera bees Africanized belong to the family Apidae being that this species is of great importance in the service of pollination in which involves the maintenance of the diversity of plants as well as the production of food. The increase of agricultural crops have resulted in wide use of pesticides, making use of these more and more frequent. Among the pesticides, stand out the neonicotinoids, which are widely used because they are effective in the fight against pests. However, by their mode of action systemic, can also affect the bees directly or indirectly. In addition to the adult bees, the larvae can also be contaminated by pollen, nectar and wax contaminated, from collections by forage. In this way, it is of utmost importance to perform ecotoxicological studies in order to verify the possible effects of these insecticides on the bees, and thus assess the impact of these xenobiotic for bees, which will allow new strategies of protection and conservation of these pollinators. In this regard, the present study proposes to evaluate the exposure of larvae of Apis mellifera honey at a concentration of field of thiamethoxam may cause morphological changes in the intestine and brain of workers newly emerged through the Hematoxylin and Eosin (H-E) and Transmission Electron Microscopy (TEM).

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FRIOL, PRISCILA SEPULVEDA; CATAE, ALINE FERNANDA; TAVARES, DAIANA ANTONIA; MALASPINA, OSMAR; ROAT, THAISA CRISTINA. Can the exposure of Apis mellifera (Hymenoptera, Apiadae) larvae to a field concentration of thiamethoxam affect newly emerged bees?. Chemosphere, v. 185, p. 56-66, . (15/09691-1, 12/13370-8, 12/50197-2)

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