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Detection of Pesticides in Active and Depopulated Beehives in Uruguay

Author

Listed:
  • Lucía Pareja

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay)

  • Marcos Colazzo

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay)

  • Andrés Pérez-Parada

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay)

  • Silvina Niell

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay
    Polo Agroalimentario y Agroindustrial, Centro Universitario Paysandú, UDELAR, Ruta 3 km 363, Paysandú 60000, Uruguay)

  • Leonidas Carrasco-Letelier

    (INIA-La Estanzuela, Ruta 50 km 11, Colonia 70000, Uruguay)

  • Natalia Besil

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay)

  • María Verónica Cesio

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay)

  • Horacio Heinzen

    (Cátedra de Farmacognosia y Productos Naturales, Departamento de Química Orgánica, Facultad de Química, UDELAR, General Flores 2124, Montevideo 11800, Uruguay)

Abstract

The influence of insecticides commonly used for agricultural purposes on beehive depopulation in Uruguay was investigated. Honeycombs, bees, honey and propolis from depopulated hives were analyzed for pesticide residues, whereas from active beehives only honey and propolis were evaluated. A total of 37 samples were analyzed, representing 14,800 beehives. In depopulated beehives only imidacloprid and fipronil were detected and in active beehives endosulfan, coumaphos, cypermethrin, ethion and chlorpyrifos were found. Coumaphos was present in the highest concentrations, around 1,000 µg/kg, in all the propolis samples from active beehives. Regarding depopulated beehives, the mean levels of imidacloprid found in honeycomb (377 µg/kg, Standard Deviation: 118) and propolis (60 µg/kg, Standard Deviation: 57) are higher than those described to produce bee disorientation and fipronil levels detected in bees (150 and 170 µg/kg) are toxic per se . The other insecticides found can affect the global fitness of the bees causing weakness and a decrease in their overall productivity. These preliminary results suggest that bees exposed to pesticides or its residues can lead them in different ways to the beehive.

Suggested Citation

  • Lucía Pareja & Marcos Colazzo & Andrés Pérez-Parada & Silvina Niell & Leonidas Carrasco-Letelier & Natalia Besil & María Verónica Cesio & Horacio Heinzen, 2011. "Detection of Pesticides in Active and Depopulated Beehives in Uruguay," IJERPH, MDPI, vol. 8(10), pages 1-15, September.
    • Handle: RePEc:gam:jijerp:v:8:y:2011:i:10:p:3844-3858:d:14181
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