The toxicological effects of thiamethoxam on Gammarus kischineffensis (Schellenberg 1937) (Crustacea: Amphipoda)

Uğurlu, Pelin; Ünlü, Erhan; Satar, Elif İpek

doi:10.1016/j.etap.2015.01.013

Cited by 46 publications

(29 citation statements)

References 24 publications

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“…Moreover, chronic exposures of C. dipterum resulted in LC50s of 0.30 μg/L for thiacloprid, 0.32 μg/L for imidacloprid and 0.8 μg/L for thiamethoxam, the latter LC50s being 270, 800 and 100 times lower than their respective ones at 24 h (van den Brink et al 2016). Also, LC50s for acute exposure of the freshwater amphipod Gammarus kischineffensis to thiamethoxam dropped from 75.6 μg/L at 24 h to 3.7 μg/L at 96 h, that is a 20-fold decrease in concentration in 4 days to achieve the same mortality effect (Uğurlu et al 2015). These studies confirm the delayed and extreme chronic toxicity of neonicotinoids to aquatic organisms.…”

Section: Effects On Aquatic Invertebratessupporting

confidence: 67%

“…The data available at that time referred to imidacloprid and thiacloprid and comprised only aquatic organisms, mainly insects and crustaceans. In recent years, two other studies about the chronic exposure of insect larvae (van den Brink et al 2016) and gammarid amphipods (Uğurlu et al 2015) have confirmed that, in addition, chronic exposure to thiamethoxam produces the same pattern of toxicity (Fig. 2a).…”

Section: The Delayed Mortality and Chronic Toxicity Of Neonicotinoidsmentioning

confidence: 68%

“…In some cases, individual studies covered more than one species, chemical, or dosage approach (e.g., chronic or acute), and in all but three cases, which were field studies covering multiple bird or reptile species, each is treated here as a separate impact study. Uğurlu et al 2015 As in the previous assessment, most studies were laboratory-based (111/129, 86%) and were of direct toxicity (124/129, 96%). This over-reliance on laboratory direct toxicity studies, as well as lack of field-based studies that can also identify indirect effects (e.g., cascades through the food chain) continues to limit our ability to interpret the findings under field-realistic conditions.…”

Section: Part B: Vertebratesmentioning

confidence: 80%

See 2 more Smart Citations

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

194

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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Section: Effects On Aquatic Invertebratessupporting

confidence: 67%

Section: The Delayed Mortality and Chronic Toxicity Of Neonicotinoidsmentioning

confidence: 68%

Section: Part B: Vertebratesmentioning

confidence: 80%

See 1 more Smart Citation

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

194

144

View full text Add to dashboard Cite

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“…All agrochemicals should be tested using TTE assays to determine whether or not the chemical has delayed, time-cumulative mortality, whereas chemicals that produce HQ>0.1 should be exempt of further evaluations because they must be rejected. The rationale for acting like this is based on our experience with the novel class of neonicotinoid insecticides, which produce values of HQ below 0.1 for most aquatic and terrestrial species when the acute 24 or 48-h LC50 or LD50 data are used, and yet produce a large proportion of mortality when the same species are exposed to much lower concentrations for a prolonged period of time [97][98][99]. Screening for such chemicals is deemed essential -thus, its inclusion in the first tier.…”

Section: Risk Assessmentmentioning

confidence: 99%

Assessment of ecological risks of agrochemicals requires a new framework.

Bayo¹,

Tennekes²

2017

Environ Risk Assess Remediat

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The widespread contamination of a significant proportion of the planet's land and water with pesticides is undeniable. While this takes place, innumerable species of animals associated with agricultural landscapes are declining at rates that may put them on the brink to extinction in the span of a lifetime. It is evident, therefore, that our current risk assessment of agrochemicals has failed to protect the environment. A new framework is proposed here that combines the mandatory introduction of new toxicity endpoints with a more logical assessment of risks within the existing tiered approach. Chronic toxicity tests designed to detect time-cumulative effects should be a requirement for assessing delayed mortality as well as population endpoints that are crucial for the recovery and survival of species, such as fecundity. Exposure assessments should ensure that field monitoring data integrate both the highest and average levels of residues, as the former levels determine the main ecological impacts. The first tier of the risk assessment should comprise an evaluation of short-term mortality (as currently done by a hazard quotient on acute toxicity) and of the lethality after chronic exposure to sublethal levels. Chemicals that pass this tier should be assessed in a second tier whereby the crucial population endpoints are evaluated. Unless there is evidence of recovery with no negative effects on reproduction of the species tested, a chemical should not be registered. Further tiers of assessment, including sublethal effects, community effects tested in model ecosystems (i.e. microcosms, mesocoms) and field trials can still be used as supporting evidence, as it is currently done. AbstractAssessment of ecological risks of agrochemicals requires a new framework.

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“…Malacostracans are important components of aquatic ecosystems because they are used as bioindicators. Malacostracans contribute to the food web by being consumed by birds, fish and amphibians (Pechenic, 1996;Uğurlu, Ünlü, Satar, 2015). The order of Amphipoda are often found in high densities and have wide distributions, hence amphipods often play major roles in the ecology of these habitats (Conlan, 1994;Thomas, 1993).…”

Section: Introductionmentioning

confidence: 99%

Untitled

Baytaşoğlu¹,

Gözler²

2018

Turk. J. Fish. Aquat. Sci.

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A three samplings were carried out between September 2014 and August 2015, at twelve stations to determine the seasonal changes of species, relations with water quality parameters, and the Malacostraca fauna of the Upper Coruh River Basin. A hand net was used to collect the biological samples. Dissolved oxygen, temperature, pH, electrical conductivity, and total dissolved solids were measured using a portable water meter. Nitrite, ammonium, phosphate, and biochemical oxygen levels were also measured. Seven taxa were identified (five of them belong to Amphipoda, one to Isopoda, and one to Decapoda). Gammarus birsteini was the continuous, while G. kischineffensis and Asellus aquaticus are common. G. fossarum, G. balcanicus, Gammarus sp. and Potamon ibericum were rarely found. AF (Aydıncık Foundation) and DF (Değirmencik Foundation) stations had first class water quality while other stations had second and third quality according to the Quality Criteria According to Classes of Inland Water Resources.

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The toxicological effects of thiamethoxam on Gammarus kischineffensis (Schellenberg 1937) (Crustacea: Amphipoda)

Cited by 46 publications

References 24 publications

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

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

Assessment of ecological risks of agrochemicals requires a new framework.

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