The stingless bee Trigona spinipes (Hymenoptera: Apidae) is at risk from a range of insecticides via direct ingestion and trophallactic exchanges.

Autor: Pereira RC; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., Vieira Júnior JOL; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., Barcelos JVPL; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., Peçanha LS; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., França TA; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., Mendonça LVP; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., da Silva WR; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., Samuels RI; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil., Silva GA; Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil.
Jazyk: angličtina
Zdroj: Pest management science [Pest Manag Sci] 2024 Apr; Vol. 80 (4), pp. 2188-2198. Date of Electronic Publication: 2024 Feb 07.
DOI: 10.1002/ps.7956
Abstrakt: Background: The stingless bee, Trigona spinipes, is an important pollinator of numerous native and cultivated plants. Trigona spinipes populations can be negatively impacted by insecticides commonly used for pest control in crops. However, this species has been neglected in toxicological studies. Here we observed the effects of seven insecticides on the survival of bees that had fed directly on insecticide-contaminated food sources or received insecticides via trophallactic exchanges between nestmates. The effects of insecticides on flight behavior were also determined for the compounds considered to be of low toxicity.
Results: Imidacloprid, spinosad and malathion were categorized as highly toxic to T. spinipes, whereas lambda-cyhalothrin, methomyl and chlorfenapyr were of medium to low toxicity and interfered with two aspects of flight behavior evaluated here. Chlorantraniliprole was the only insecticide tested here that had no significant effect on T. spinipes survival, although it did interfere with one aspect of flight capacity. A single bee that had ingested malathion, spinosad or imidacloprid, could contaminate three, four and nineteen other bees, respectively via trophallaxis, resulting in the death of the recipients.
Conclusion: This is the first study to evaluate the ecotoxicology of a range of insecticides that not only negatively affected T. spinipes survival, but also interfered with flight capacity, a very important aspect of pollination behavior. The toxicity of the insecticides was observed following direct ingestion and also via trophallactic exchanges between nestmates, highlighting the possibility of lethal effects of these insecticides spreading throughout the colony, reducing the survival of non-foraging individuals. © 2023 Society of Chemical Industry.
(© 2023 Society of Chemical Industry.)
Databáze: MEDLINE
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