Field Trial for Evaluating the Effects on Honeybees of Corn Sown Using Cruiser® and Celest xl® Treated Seeds

  • Paolo Tremolada
  • Marta Mazzoleni
  • Francesco Saliu
  • Mario Colombo
  • Marco Vighi


A first field study was conducted to investigate the possible adverse effects that seeds dressed with neonicotinoid insecticides pose to honeybees during sowing. It was observed that in the exposure hives bee mortality increased on the day of sowing and that the number of foraging bees decreased the days after the sowing. The corn sowing posed a significant threat to honeybees, with thiamethoxam being the most probable toxic agent. A theoretical contact exposure was calculated for a bee when flying over the sown fields, revealing a dose of 9.2 ng bee−1 close to the contact LD50 of thiamethoxam.


Neonicotinoid insecticides Honeybees health Pesticide exposure Colony collapse disorder 


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Paolo Tremolada
    • 1
  • Marta Mazzoleni
    • 1
  • Francesco Saliu
    • 2
  • Mario Colombo
    • 3
  • Marco Vighi
    • 2
  1. 1.Department of BiologyUniversity of MilanMilanItaly
  2. 2.Department of Landscape and Environmental SciencesUniversity of Milano-BicoccaMilanItaly
  3. 3.Department of Protection of Urban and Agri-Food Systems and of Biodiversity ValorisationUniversity of MilanMilanItaly

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