Influence of land use on chlorpyrifos and persistent organic pollutant levels in honey bees, bee bread and honey: Beehive exposure assessment

• Published in: The Science of the total environment Vol. 713; p. 136554
• Main Authors: Villalba, A., Maggi, M., Ondarza, P.M., Szawarski, N., Miglioranza, K.S.B.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15-04-2020
• Subjects: Animals; Argentina; Bee bread; Bees; Chlorpyrifos; Environmental Pollutants; Honey; Land use; POPs; Argentina; Chlorpyrifos; Honey; Bee bread; Bees; Land use; POPs
• ISSN: 0048-9697; 1879-1026
• DOI: 10.1016/j.scitotenv.2020.136554

This work reports the spatial and temporal variations on the dynamics of OCPs, PCBs, PBDEs and chlorpyrifos in honey bee, bee bread and honey samples, as well as soil and flowers from the surrounding areas, considering, different land uses. Honey bee samples showed the highest pollutant levels, with a predominance of the industrial contaminants over pesticides. Chlorpyrifos showed the highest concentration during the application period in almost all samples from the soybean field (S2), in concordance with its current use. By other hand, the recalcitrant compounds such as, DDTs, BDE #47 and also light PCBs exhibited the highest levels in beehive samples from the field adjacent to urban disposal waste (S3). In both soils and flower samples a prevalence of obsolete compounds over chlorpyrifos was observed, and the 6-CB predominated among the homologous groups of PCBs These results highlights the importance of soils as sink of these persistent contaminants, which became available depending on environmental conditions. Results revealed that the land uses and seasonal variations have directly impacted on the levels of agrochemicals, PCBs and PBDEs found in the beehive matrixes. This survey provides novel evidence about the current situation of pollution on honey bee colonies under temperate climates and contributes to the knowledge of this poor studied topic in Argentina.
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•OCPs, PCBs and PBDEs residues were found in honey bee, bee bread, honey, soil and flower samples.•Chlorpyrifos was found in all samples from all sampling sites and periods.•Honey bee samples were the most contaminated matrix of the beehive.•Land uses and seasonal variations have affected directly the levels of pollutants observed in the beehive matrixes.