Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)

There is widespread concern over the use of neonicotinoid pesticides in the agro-ecosystem, due in part to their high water solubility which can lead to widespread contamination of non-target areas including standing surface water. Most studies investigating the negative fitness consequences of neon...

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Main Authors: Kate Basley, Balin Davenport, Kate Vogiatzis, Dave Goulson
Format: Article
Language:English
Published: PeerJ Inc. 2018-01-01
Series:PeerJ
Subjects:
Online Access:https://peerj.com/articles/4258.pdf
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author Kate Basley
Balin Davenport
Kate Vogiatzis
Dave Goulson
author_facet Kate Basley
Balin Davenport
Kate Vogiatzis
Dave Goulson
author_sort Kate Basley
collection DOAJ
description There is widespread concern over the use of neonicotinoid pesticides in the agro-ecosystem, due in part to their high water solubility which can lead to widespread contamination of non-target areas including standing surface water. Most studies investigating the negative fitness consequences of neonicotinoids have focused on bees, with little research on the impact on other non-target insects. Here we examined the effect of exposure on the aquatic larval stages of the hoverfly Eristalis tenax L. (Diptera: Syrphidae) to a range of concentrations (control, 5, 15, 50, 100 and 500 ppb) of the neonicotinoid thiamethoxam; no published studies have thus far examined the effects of neonicotinoids on hoverflies. Survival was significantly lower when exposed to 500 ppb thiamethoxam, but this concentration exceeds that likely to be found in the field. We observed no effect on survival, development or any latent effects on adult activity budgets resulting from exposure to lower concentrations (up to 100 ppb). Our results suggest that E. tenax exposed as larvae to thiamethoxam are unlikely to be negatively impacted by this neonicotinoid under field conditions.
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spelling doaj.art-f9977969508b4f5881442dbaca5f99562023-12-03T10:37:50ZengPeerJ Inc.PeerJ2167-83592018-01-016e425810.7717/peerj.4258Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)Kate Basley0Balin Davenport1Kate Vogiatzis2Dave Goulson3School of Life Sciences, University of Sussex, Brighton, East Sussex, UKSchool of Life Sciences, University of Sussex, Brighton, East Sussex, UKDepartment of Life Sciences, Imperial College London, London, UKSchool of Life Sciences, University of Sussex, Brighton, East Sussex, UKThere is widespread concern over the use of neonicotinoid pesticides in the agro-ecosystem, due in part to their high water solubility which can lead to widespread contamination of non-target areas including standing surface water. Most studies investigating the negative fitness consequences of neonicotinoids have focused on bees, with little research on the impact on other non-target insects. Here we examined the effect of exposure on the aquatic larval stages of the hoverfly Eristalis tenax L. (Diptera: Syrphidae) to a range of concentrations (control, 5, 15, 50, 100 and 500 ppb) of the neonicotinoid thiamethoxam; no published studies have thus far examined the effects of neonicotinoids on hoverflies. Survival was significantly lower when exposed to 500 ppb thiamethoxam, but this concentration exceeds that likely to be found in the field. We observed no effect on survival, development or any latent effects on adult activity budgets resulting from exposure to lower concentrations (up to 100 ppb). Our results suggest that E. tenax exposed as larvae to thiamethoxam are unlikely to be negatively impacted by this neonicotinoid under field conditions.https://peerj.com/articles/4258.pdfPesticideChronic exposureMortalityNon-targetWeightSyrphidae
spellingShingle Kate Basley
Balin Davenport
Kate Vogiatzis
Dave Goulson
Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)
PeerJ
Pesticide
Chronic exposure
Mortality
Non-target
Weight
Syrphidae
title Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)
title_full Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)
title_fullStr Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)
title_full_unstemmed Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)
title_short Effects of chronic exposure to thiamethoxam on larvae of the hoverfly Eristalis tenax (Diptera, Syrphidae)
title_sort effects of chronic exposure to thiamethoxam on larvae of the hoverfly eristalis tenax diptera syrphidae
topic Pesticide
Chronic exposure
Mortality
Non-target
Weight
Syrphidae
url https://peerj.com/articles/4258.pdf
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