Toxicity of Imidacloprid to the Stingless Bee Scaptotrigona postica Latreille, 1807 (Hymenoptera: Apidae)

  • Hellen Maria SoaresEmail author
  • Cynthia Renata Oliveira Jacob
  • Stephan Malfitano Carvalho
  • Roberta Cornélio Ferreira Nocelli
  • Osmar Malaspina


The stingless bee Scaptotrigona postica is an important pollinator of native and cultivated plants in Brazil. Among the factors affecting the survival of these insects is the indiscriminate use of insecticides, including the neonicotinoid imidacloprid. This work determined the toxicity of imidacloprid as the topical median lethal dose (LD50) and the oral median lethal concentration (LC50) as tools for assessing the effects of this insecticide. The 24 and 48 h LD50 values were 25.2 and 24.5 ng of active ingredient (a.i.)/bee, respectively. The 24 and 48 h LC50 values were 42.5 and 14.3 ng a.i./µL of diet, respectively. Ours results show the hazard of imidacloprid and the vulnerability of stingless bees to it, providing relevant toxicological data that can used in mitigation programs to ensure the conservation of this species.


Acute toxicity Neonicotinoid Stingless bee 



The authors thank the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—CAPES that provided the scholarship for the Hellen Maria Soares and the Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP (2012/50197-2).


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Hellen Maria Soares
    • 1
    Email author
  • Cynthia Renata Oliveira Jacob
    • 1
  • Stephan Malfitano Carvalho
    • 2
  • Roberta Cornélio Ferreira Nocelli
    • 3
  • Osmar Malaspina
    • 1
  1. 1.Departamento de Biologia, UNESP-Centro de Estudos de Insetos SociaisUniversidade Estadual Paulista “Júlio de Mesquita Filho”Rio ClaroBrazil
  2. 2.Instituto de Ciências AgráriasUniversidade Federal de UberlândiaUberlândiaBrazil
  3. 3.Departamento de Ciências da Natureza, Matemática e Educação, Centro de Ciências AgráriasUniversidade Federal de São CarlosArarasBrazil

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