Lethal and sublethal effects, and incomplete clearance of ingested imidacloprid in honey bees (Apis mellifera)

A previous study claimed a differential behavioural resilience between spring or summer honey bees (Apis mellifera) and bumble bees (Bombus terrestris) after exposure to syrup contaminated with 125 µg L-1 imidacloprid for 8 days. The authors of that study based their assertion on the lack of body re...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 26(2017), 9 vom: 22. Nov., Seite 1199-1206
1. Verfasser: Sánchez-Bayo, Francisco (VerfasserIn)
Weitere Verfasser: Belzunces, Luc, Bonmatin, Jean-Marc
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Bees Chronic exposure Detoxification Neonicotinoids Pesticides Residues Insecticides Nitro Compounds imidacloprid 3BN7M937V8
Beschreibung
Zusammenfassung:A previous study claimed a differential behavioural resilience between spring or summer honey bees (Apis mellifera) and bumble bees (Bombus terrestris) after exposure to syrup contaminated with 125 µg L-1 imidacloprid for 8 days. The authors of that study based their assertion on the lack of body residues and toxic effects in honey bees, whereas bumble bees showed body residues of imidacloprid and impaired locomotion during the exposure. We have reproduced their experiment using winter honey bees subject to the same protocol. After exposure to syrup contaminated with 125 µg L-1 imidacloprid, honey bees experienced high mortality rates (up to 45%), had body residues of imidacloprid in the range 2.7-5.7 ng g-1 and exhibited abnormal behaviours (restless, apathetic, trembling and falling over) that were significantly different from the controls. There was incomplete clearance of the insecticide during the 10-day exposure period. Our results contrast with the findings reported in the previous study for spring or summer honey bees, but are consistent with the results reported for the other bee species
Beschreibung:Date Completed 01.12.2017
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1573-3017
DOI:10.1007/s10646-017-1845-9