Sensitivity of the early-life stages of freshwater mollusks to neonicotinoid and butenolide insecticides

Prosser, Ryan S.; Solla, Shane R. de; Holman, Emily; Osborne, Rebecca K.; Robinson, Stacey A.; Bartlett, Adrienne J.; Maisonneuve, France; Gillis, Patricia L.

doi:10.1016/j.envpol.2016.07.022

Cited by 63 publications

(48 citation statements)

References 29 publications

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“…All LC x values were greater than the maximum reported Ontario surface water concentrations for these investigated pesticides (Struger et al , ; National Pesticides Monitoring and Surveillance Network ), and the results from the present study indicated that both juvenile and adult L. siliquoidea were relatively insensitive to these pesticides at subchronic exposures, especially compared to effects on other nontarget organisms including aquatic insects (e.g., Prosser et al ; Raby et al ). Similar to the V. iris glochidia, juvenile and adult L. siliquoidea would be protected by proposed water quality guidelines (Table and Figures and ; Supplemental Data, Figures S1–S14).…”

Section: Resultssupporting

confidence: 51%

“…glochidia (24 h) and juveniles (96 h) of 54 000 and 142 000 µg/L, respectively, where both studies correspond with the 48‐h EC50 for malathion observed in the present investigation (>4900 µg/L). A previous study in our laboratory reported EC50 values for Lampsilis fasciola (wavy‐rayed lampmussel; Rafinesque 1820) glochidia exposed to 7 neonicotinoids (including clothianidin, imidacloprid, and thiamethoxam) and 1 butenolide (flupyradifurone) that were greater than the highest concentration tested (598–688 µg/L; Prosser et al ). The present study tested greater concentrations of the same pesticides (8400–17 400 µg/L) and reported NOEC and EC50 values greater than the highest tested concentration (Table ).…”

Section: Resultsmentioning

confidence: 92%

“…The concentration of each pesticide causing 10, 25, or 50% loss in viability (EC x ) or lethality (LC x ) along with 95% confidence intervals (CIs) were estimated by nonlinear regression using the drc package in RStudio, Ver 3.3.2 (Ritz and Streibig ; Prosser et al ; RStudio ). The EC x values for the 48‐h glochidia tests were determined using the measured concentrations of each pesticide at test initiation because there was a relatively minor change in the majority of measured concentrations of pesticides from 0 to 48 h (Supplemental Data, Table S8).…”

Section: Methodsmentioning

confidence: 99%

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Sensitivity of multiple life stages of 2 freshwater mussel species (Unionidae) to various pesticides detected in Ontario (Canada) surface waters

Salerno

Bennett

Holman

et al. 2018

Enviro Toxic and Chemistry

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Freshwater mussels contribute important ecological functions to aquatic systems. The water filtered by mussel assemblages can improve water quality, and the mixing of sediments by burrowing mussels can improve oxygen content and release nutrients. However, nearly 70% of North American freshwater mussel species are listed as either endangered, threatened, or in decline. In Ontario, 28 species are in decline or in need of protection. Even though freshwater mussels have a heightened sensitivity to some contaminants, few studies have investigated the risks that various pesticide classes pose to one freshwater mussel species or among life stages. Lampsilis siliquoidea and Villosa iris were the focus of the present study, with the latter currently listed as of "special concern" in Canada. A potential risk to the recovery of freshwater mussel species is the presence and persistence of pesticides in Ontario surface waters. Acute (48 h) toxicity tests were performed with V. iris glochidia to determine the effect on viability (surrogate for survival) following exposure to 4 fungicides (azoxystrobin, boscalid, metalaxyl, and myclobutanil), 3 neonicotinoids (clothianidin, imidacloprid, and thiamethoxam), 2 carbamates (carbaryl and malathion), 1 organophosphate (chlorpyrifos), and 1 butenolide (flupyradifurone). Juvenile and adult L. siliquoidea were also exposed to azoxystrobin, clothianidin, imidacloprid (juvenile only), and carbaryl (adult only). Our study found in general that all life stages were insensitive to the pesticides tested, with median effect and lethal concentrations >161 µg/L. The pesticides tested likely represent a minimal risk (hazard quotients <5.4 × 10 ) to freshwater mussel viability and survival in acute (48 h) and subchronic (28 d) exposures, respectively, in Ontario streams where pesticide concentrations were considerably lower than those tested in the present study. Environ Toxicol Chem 2018;37:2871-2880. © 2018 SETAC.

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Section: Resultssupporting

confidence: 51%

Section: Resultsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Sensitivity of multiple life stages of 2 freshwater mussel species (Unionidae) to various pesticides detected in Ontario (Canada) surface waters

Salerno

Bennett

Holman

et al. 2018

Enviro Toxic and Chemistry

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“…Toxicity tests of a suite of neonicotinoids to the Ramshorn snail (Planorbella pilsbryi) showed 7-day LC50s of ≥ 4000 μg/L for imidacloprid, clothianidin, and thiamethoxam, respectively, whereas the 28-day LC50s were ≥ 182 μg/L for all three insecticides. However, growth and biomass are more sensitive endpoints than mortality for this species, with EC50s ranging from 33.2 to 122.0 μg/L (Prosser et al 2016). Similarly, the 48-h LC50s for glochidia of the wavy-rayed lampmussel (Lampsilis fasciola) were ≥ 456 μg/L for all seven neonicotinoids tested by these authors.…”

Section: Effects On Aquatic Invertebratesmentioning

confidence: 77%

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems

Pisa

Goulson

Yang

et al. 2017

Environ Sci Pollut Res

201

144

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New information on the lethal and sublethal effects of neonicotinoids and fipronil on organisms is presented in this review, complementing the previous Worldwide Integrated Assessment (WIA) in 2015. The high toxicity of these systemic insecticides to invertebrates has been confirmed and expanded to include more species and compounds. Most of the recent research has focused on bees and the sublethal and ecological impacts these insecticides have on pollinators. Toxic effects on other invertebrate taxa also covered predatory and parasitoid natural enemies and aquatic arthropods. Little new information has been gathered on soil organisms. The impact on marine and coastal ecosystems is still largely uncharted. The chronic lethality of neonicotinoids to insects and crustaceans, and the strengthened evidence that these chemicals also impair the immune system and reproduction, highlights the dangers of this particular insecticidal class (neonicotinoids and fipronil), with the potential to greatly decrease populations of arthropods in both terrestrial and aquatic environments. Sublethal effects on fish, reptiles, frogs, birds, and mammals are also reported, showing a better understanding of the mechanisms of toxicity of these insecticides in vertebrates and their deleterious impacts on growth, reproduction, and neurobehaviour of most of the species tested. This review concludes with a summary of impacts on the ecosystem services and functioning, particularly on pollination, soil biota, and aquatic invertebrate communities, thus reinforcing the previous WIA conclusions .

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“…The second June water sample from each wetland was analyzed for atrazine and neonicotinoids (acetamiprid, clothianidin, imidacloprid, and thiomethoxam) in September-October 2015 using solid phase extraction followed by highperformance liquid chromatography-mass spectrometry (HPLC-MS; details in Prosser et al 2016, Sawatzky 2016, Robinson et al 2017). This work was conducted by Laboratory Services at Environment Canada's National Wildlife Research Centre.…”

Section: Nutrient and Pesticide Levelsmentioning

confidence: 99%

Wetland buffers are no substitute for landscape‐scale conservation

Sawatzky

Fahrig

2019

Ecosphere

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Wetlands in farmland are at risk of contamination by fertilizers and pesticides. One recommendation for reducing wetland contamination is to maintain a buffer of contiguous uncropped land around the wetland (a wetland buffer). Many agricultural water protection policies around the world recommend 5 to 50‐m wide uncropped buffers around water bodies, but it is unclear how large wetland buffers must be to effectively protect against these chemicals. In addition, it is unclear whether wetland buffers have similar—or stronger—effects on fertilizer and pesticide contamination than reducing the amount of cropped land within the larger landscape context around wetlands. Our study, conducted across 37 wetlands in eastern Ontario, Canada, addressed the following questions: (1) Does increasing buffer width, or increasing the amount of contiguous uncropped land within recommended buffer width guidelines, reduce nutrient and pesticide levels in agricultural wetlands? (2) Does increasing uncropped land cover in the broader landscape reduce nutrient and pesticide levels in agricultural wetlands? and (3) What is the relative importance of buffer size and landscape‐scale uncropped cover for reducing nutrient and pesticide levels in agricultural wetlands? A rigorous site selection process was employed to minimize the correlation between buffer size and landscape‐scale uncropped cover, minimize spatial gradients in these predictor variables, and minimize variation in potentially confounding variables. We obtained nutrient and pesticide data by collecting water samples from each wetland under similar weather conditions in June–July 2015. Nitrate concentrations were measured using ion chromatography, and atrazine and neonicotinoid (pesticide) concentrations using a combination of high‐performance liquid chromatography and mass spectrometry. We found that nitrate, atrazine, and neonicotinoid concentrations in study wetlands were unaffected by wetland buffer size. However, concentrations of each chemical decreased with uncropped land cover in the surrounding 150 to 300‐m radius landscapes. To effectively protect water in agricultural wetlands from contamination by nitrate‐based fertilizers and atrazine or neonicotinoid pesticides, we recommend either increasing the policy‐recommended width of wetland buffers to at least 150 m, or abandoning the buffer paradigm in favor of landscape‐scale conservation.

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Sensitivity of the early-life stages of freshwater mollusks to neonicotinoid and butenolide insecticides

Cited by 63 publications

References 29 publications

Sensitivity of multiple life stages of 2 freshwater mussel species (Unionidae) to various pesticides detected in Ontario (Canada) surface waters

Sensitivity of multiple life stages of 2 freshwater mussel species (Unionidae) to various pesticides detected in Ontario (Canada) surface waters

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems

Wetland buffers are no substitute for landscape‐scale conservation

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