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Tytuł:
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The neonicotinoid thiamethoxam impairs male fertility in solitary bees, Osmia cornuta.
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Autorzy:
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Strobl V; Institute of Bee Health, Vetsuisse Faculty, University of Bern, Bern, Switzerland. Electronic address: .
Albrecht M; Agroscope, Agroecology and Environment, Zurich, Switzerland.
Villamar-Bouza L; Institute of Bee Health, Vetsuisse Faculty, University of Bern, Bern, Switzerland; European Food Safety Authority (EFSA), Pesticides Unit, Parma, Italy.
Tosi S; Department of Agricultural, Forest, and Food Sciences, University of Turin, Italy.
Neumann P; Institute of Bee Health, Vetsuisse Faculty, University of Bern, Bern, Switzerland; Agroscope, Swiss Bee Research Centre, Bern, Switzerland.
Straub L; Institute of Bee Health, Vetsuisse Faculty, University of Bern, Bern, Switzerland; Agroscope, Swiss Bee Research Centre, Bern, Switzerland.
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Źródło:
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Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2021 Sep 01; Vol. 284, pp. 117106. Date of Electronic Publication: 2021 Apr 16.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Barking, Essex, England : Elsevier Applied Science Publishers, c1987-
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MeSH Terms:
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Ecosystem*
Insecticides*/toxicity
Animals ; Bees ; Female ; Fertility ; Male ; Neonicotinoids/toxicity ; Nitro Compounds/toxicity ; Thiamethoxam ; Thiazoles/toxicity
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Contributed Indexing:
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Keywords: Environmental pollutants; Solitary bee; Sperm traits; Thiamethoxam
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Substance Nomenclature:
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0 (Insecticides)
0 (Neonicotinoids)
0 (Nitro Compounds)
0 (Thiazoles)
747IC8B487 (Thiamethoxam)
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Entry Date(s):
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Date Created: 20210430 Date Completed: 20210714 Latest Revision: 20210714
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Update Code:
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20240105
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DOI:
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10.1016/j.envpol.2021.117106
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PMID:
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33930781
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The ongoing loss of global biodiversity is endangering ecosystem functioning and human food security. While environmental pollutants are well known to reduce fertility, the potential effects of common neonicotinoid insecticides on insect fertility remain poorly understood. Here, we show that field-realistic neonicotinoid exposure can drastically impact male insect fertility. In the laboratory, male and female solitary bees Osmia cornuta were exposed to four concentrations of the neonicotinoid thiamethoxam to measure survival, food consumption, and sperm traits. Despite males being exposed to higher dosages of thiamethoxam, females revealed an overall increased hazard rate for survival; suggesting sex-specific differences in toxicological sensitivity. All tested sublethal concentrations (i.e., 1.5, 4.5 and 10 ng g -1 ) reduced sperm quantity by 57% and viability by 42% on average, with the lowest tested concentration leading to a reduction in total living sperm by 90%. As the tested sublethal concentrations match estimates of global neonicotinoid pollution, this reveals a plausible mechanism for population declines, thereby reflecting a realistic concern. An immediate reduction in environmental pollutants is required to decelerate the ongoing loss of biodiversity.
(Copyright © 2021. Published by Elsevier Ltd.)
