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Toxicidade de inseticidas para abelhas Apis mellifera L

Authors: Bovi, Thaís de Souza;

Toxicidade de inseticidas para abelhas Apis mellifera L

Abstract

Este trabalho teve por objetivos estabelecer a Dose Letal (DL50) de inseticidas em abelhas campeiras de Apis mellifera africanizadas e verificar a ocorrência de alterações comportamentais. O experimento foi desenvolvido no Setor de Apicultura da Faculdade de Medicina Veterinária e Zootecnia, Fazenda Experimental Lageado, UNESP, Campus de Botucatu. Foram utilizadas abelhas campeiras e testados os agrotóxicos Acefato, Cipermetrina, Deltametrina, Carbaril, Fipronil e Imidacloprido, por meio de testes de contato (2L na região dorsal do tórax) e ingestão (1 mL de mel), ambos contendo as diferentes doses dos inseticidas. O controle dos testes de contato e ingestão receberam apenas água destilada e mel, respectivamente. Após 30, 60, 90, 120 e 150 minutos do início dos testes quantificou-se o número de abelhas com alterações comportamentais. Para cálculo da DL50, 24 horas após o início dos testes, os resultados foram submetidos à análise Probit, utilizando-se o programa BioStat. Os dados de alteração de comportamento foram analisados por meio do teste de Tukey para comparação entre médias (P<0,05). As DL50 de contato e ingestão (g/abelha) foram, respectivamente, Acefato 0,00370,0012 e 0,01470,0045; Carbaril 0,24560,1254 e 0,36330,1680; Cipermetrina 0,00040,0001 e 0,01030,0087; Deltametrina 0,00420,0021 e 0,04860,01; Fipronil 0,00800,0021 e 0,23160,0626; Imidacloprido 0,03080,0218 e 0,10790,0375. Os testes de contato para Acefato, Carbaril, Cipermetrina e Deltametrina e os testes de ingestão para Carbaril, Fipronil e Imidacloprido mostraram alterações comportamentais significativas, em relação ao controle. Conclui-se que todas as substâncias foram prejudiciais às abelhas, devido aos baixos valores de DL50 obtidos, e a ocorrência de alterações comportamentais

This research aimed establishes the lethal dose (LD50) of insecticides in africanized foraging bees Apis mellifera and verify the occurrence of behavioral changes. The research was conducted in the Sector of Apiculture, Veterinary Medicine and Animal Science University, Lageado Experimental Farm, UNESP, Botucatu. Were used foraging bees and tested the pesticides Acephate, Cypermethrin, Deltamethrin, Carbaryl, Fipronil and Imidacloprid through contact test (2L in dorsal region of the chest) and food intake (1mL of honey), both containing different doses of pesticides. The control group test of contact and food intake received only distilled water and honey, respectively. After 30, 60, 90, 120 and 150 minutes of the test starting were quantified the numbers of bees with behavioral changes. For calculation of LD50, 24 hours after the starting of tests, the results were submitted to Probit analysis using the program BioStat. Data behavioral changes were analyzed by Tukey test for comparison of means (P<0.05). The LD50 of contact and food intake (g/bee) were, respectively, Acephate 0.00370.0012 and 0.01470.0045; Carbaryl 0.24560.1254 and 0.36330.1680; Cypermethrin 0.00040.0001 and 0.01030.0087; Deltamethrin 0.00420.0021 and 0.04860.01; Fipronil 0.00800.0021 and 0.23160.0626; Imidacloprid 0.03080.0218 and 0.10790.0375. The tests contact to Acephate, Carbaryl, Cipermethrin and Deltamethrin and the food intake tests for Carbaryl, Fipronil and Imidacloprid showed significant behavioral changes, compared to control. It can be concluded that all the substances were harmful to bees, due to low LD50 values obtained, and the occurrence of behavioral changes

Pós-graduação em Zootecnia - FMVZ

Keywords

Abelha - Comportamento, Apis mellifera adansonii, Abelha-africanizada, Comportamento - Avaliação, Inseticidas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green