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首页> 外文期刊>Environmental toxicology and chemistry / >Comparison of the Sensitivity of Tetragonisca angustula (Apidae-Meliponini) and Apis mellifera (Apidae-Apini) to Three Insecticides (Malathion, Imidacloprid, and Fipronil) Used in Costa Rica
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Comparison of the Sensitivity of Tetragonisca angustula (Apidae-Meliponini) and Apis mellifera (Apidae-Apini) to Three Insecticides (Malathion, Imidacloprid, and Fipronil) Used in Costa Rica

机译：Comparison of the Sensitivity of Tetragonisca angustula (Apidae-Meliponini) and Apis mellifera (Apidae-Apini) to Three Insecticides (Malathion, Imidacloprid, and Fipronil) Used in Costa Rica

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The decline of insect pollinators is a significant concern within the current biodiversity crisis. The paradox betweenthe benefits that these animals represent to humans and the evidence of human activities driving their extinction calls for theurgent protection of bees. To address the role of chemical pollution in this scenario, we assessed the acute toxicity as well asfour biomarker responses (cholinesterase ChE, glutathione S‐transferase, catalase, and lipid peroxidation LPO) elicitedby dietary 24‐h exposure to three insecticides (malathion, imidacloprid, and fipronil) on the stingless neotropical beeTetragonisca angustula and the honeybee Apis mellifera. Malathion was the most toxic substance to both species, with 48‐hmedian lethal doses (LD50s) of 0.25 ng/bee to A. mellifera and 0.02 ng/bee to T. angustula. Fipronil was also highly toxic andpresented a similar toxicity to both species, with 48‐h LD50s of 0.5 ng/bee (A. mellifera) and 0.4 ng/bee (T. angustula).Imidacloprid had the lowest acute toxicity with a 48‐h LD50 of 29 ng/bee for A. mellifera, whereas T. angustula toleratedexposure higher than 35 ng/bee. Apparent biomarker responses were observed in bees of both species that survivedexposure to higher concentrations of malathion (ChE inhibition) and fipronil (increased LPO). Our results suggest that specificsensitivity to insecticides varies greatly among compounds and pollinator species, but the use of different representativespecies can facilitate the prioritization of substances regarding their risk to pollinators. Further research is necessary tobetter characterize the risk that pesticides represent in neotropical agricultural landscapes.

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