Abstract:
:The extensive production of zinc oxide (ZnO) nanomaterials (NMs) may result in high environmental zinc burdens. Honeybees need to have special concern due to their crucial role in pollination. Our previous study indicated that low concentrations of ZnO NMs, corresponding to 0.8 mg Zn/mL, have a neurotoxic potential for honeybees after a 10-day oral exposure. Present study was designed to investigate the effect of a short, dietary exposure of honeybees to ZnO NMs at concentrations 0.8-8 mg Zn/mL on consumption rate, food preference, and two enzymatic biomarkers-a stress-related glutathione S-transferase (GST) and the neurotoxicity biomarker acetylcholinesterase (AChE). Consumption rate showed a tendency toward a decrease feeding with the increasing concentrations of ZnO NMs. None of Zn NMs concentrations caused alterations in mortality rate and in the activities of brain GST and AChE. To investigate if there is an avoidance response against Zn presence in food, 24-h two-choice tests were performed with control sucrose diet versus sucrose suspensions with different concentrations of ZnO NMs added. We demonstrated that honeybees prefer ZnO NMs ZnO NMs containing suspensions, even at highest Zn concentrations tested, compared with the control diet. This indicates that they might be able to perceive the presence of ZnO NMs in sucrose solution. Because honeybees feed frequently the preference towards ZnO NMs might have a high impact on their survival when exposed to these NMs.
journal_name
Arch Environ Contam Toxicoljournal_title
Archives of environmental contamination and toxicologyauthors
Glavan G,Milivojević T,Božič J,Sepčić K,Drobne Ddoi
10.1007/s00244-017-0385-xsubject
Has Abstractpub_date
2017-04-01 00:00:00pages
471-480issue
3eissn
0090-4341issn
1432-0703pii
10.1007/s00244-017-0385-xjournal_volume
72pub_type
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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