title: Toxicity of Imidacloprid to the Stingless Bee Scaptotrigona postica Latreille, 1807 (Hymenoptera: Apidae).
abstract: 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.
authors: Departamento de Biologia, UNESP-Centro de Estudos de Insetos Sociais, Universidade Estadual Paulista "Júlio de Mesquita Filho", Avenida 24-A, n.1515, Bela Vista, Rio Claro, SP, 13506-900, Brazil, hellenmsoares@gmail.com.
authors: Hellen Maria
authors: HM
authors: Soares
authors: Cynthia Renata Oliveira
authors: CR
authors: Jacob
authors: Stephan Malfitano
authors: SM
authors: Carvalho
authors: Roberta Cornélio Ferreira
authors: RC
authors: Nocelli
authors: Osmar
authors: O
authors: Malaspina
mesh_terms: D000284:Administration, Oral; D000287:Administration, Topical; D000818:Animals; D001516:Bees / Q000187:drug effects*; D007093:Imidazoles / Q000633:toxicity*; D007306:Insecticides / Q000633:toxicity*; D007928:Lethal Dose 50; D000073943:Neonicotinoids; D009574:Nitro Compounds / Q000633:toxicity*
chemical_list: D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; C082359:imidacloprid