Occurrence of neonicotinoids and fipronil in estuaries and their potential risks to aquatic invertebrates

Hano, Takuzo; Ito, Katsutoshi; Ohkubo, Nobuyuki; Sakaji, Hideo; Watanabe, Akio; Takashima, Kei; Sato, Taku; Sugaya, Takuma; Matsuki, Kosuke; Onduka, Toshimitsu; Ito, Mana; Somiya, Rei; Mochida, Keiichi

doi:10.1016/j.envpol.2019.05.067

Cited by 68 publications

(31 citation statements)

References 35 publications

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“…In all cases, the species tested showed time-cumulative toxicity, as indicated by values of the exponent n >1. Typical values of n range between 1.2 and 2.5, with only three cases in which n is higher: 2.9 for imidacloprid on Aedes aegypti [31], 3.1 for clothianidin on Chironomus dilutus [32] and 4.7 for imidacloprid on Cypridopsis vidua [28]. The regression coefficients (r 2 ) obtained in all cases are >0.80 except for the amphipod Gammarus pulex exposed to thiacloprid, which is 0.72.…”

Section: Aquatic Organismsmentioning

confidence: 92%

“…The data collected refers to eight species of aquatic insects belonging to four different taxa, plus five species of crustaceans from four taxa and one molluscan species. All species tested are freshwater organisms, as the scarce information available on estuarine and marine organisms refers only to acute toxicity and did not allow analysis of time-dependent toxicity [32]. In all cases, the species tested showed time-cumulative toxicity, as indicated by values of the exponent n >1.…”

Section: Aquatic Organismsmentioning

confidence: 99%

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Time-Cumulative Toxicity of Neonicotinoids: Experimental Evidence and Implications for Environmental Risk Assessments

Sánchez‐Bayo

Tennekes²

2020

IJERPH

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Our mechanistic understanding of the toxicity of chemicals that target biochemical and/or physiological pathways, such as pesticides and medical drugs is that they do so by binding to specific molecules. The nature of the latter molecules (e.g., enzymes, receptors, DNA, proteins, etc.) and the strength of the binding to such chemicals elicit a toxic effect in organisms, which magnitude depends on the doses exposed to within a given timeframe. While dose and time of exposure are critical factors determining the toxicity of pesticides, different types of chemicals behave differently. Experimental evidence demonstrates that the toxicity of neonicotinoids increases with exposure time as much as with the dose, and therefore it has been described as time-cumulative toxicity. Examples for aquatic and terrestrial organisms are shown here. This pattern of toxicity, also found among carcinogenic compounds and other toxicants, has been ignored in ecotoxicology and risk assessments for a long time. The implications of the time-cumulative toxicity of neonicotinoids on non-target organisms of aquatic and terrestrial environments are far reaching. Firstly, neonicotinoids are incompatible with integrated pest management (IPM) approaches and secondly regulatory assessments for this class of compounds cannot be based solely on exposure doses but need also to take into consideration the time factor.

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Section: Aquatic Organismsmentioning

confidence: 92%

Section: Aquatic Organismsmentioning

confidence: 99%

Time-Cumulative Toxicity of Neonicotinoids: Experimental Evidence and Implications for Environmental Risk Assessments

Sánchez‐Bayo

Tennekes²

2020

IJERPH

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“…The estimated annual quantity of neonicotinoids released into the adjacent seas totaled 1256 ± 780 tons, and 27% and 84% of the samples exceeded the thresholds for acute and chronic ecological risks respectively. -Marine and estuary waters near the Seto Sea (Japan) were analysed with some containing imidacloprid and fipronil at levels exceeding the freshwater benchmarks for aquatic invertebrates (Hano et al, 2019). found neonicotinoids in soil (68% of samples), sediment (47%) and water (12%) in a survey of Northern Belize.…”

Section: Environmental Contaminationmentioning

confidence: 99%

Social, Psychological and Health Impact of Coronavirus Disease (COVID-19) on the Elderly: South African and Italian Perspectives

2021

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Agriculture is critically important for African societies and economies but ensuring food security for Africa’s growing population is a major challenge. One particular concern are pesticides called ‘neonicotinoids’, which render all parts of a plant toxic to all insects and contaminate the soil and water bodies. By exposing all organisms to the toxins, neonicotinoids also harm beneficial insects that provide many important ‘ecosystem services’, such as pollination, soil development, and natural pest control, which are an integral part of sustainable agriculture. Neonicotinoids have contributed to the loss of ecosystem services from pollinators and other insects in Europe and elsewhere, and several of them have been banned in the (European Union) EU and other countries due to their harmful effect on beneficial insects. Africa, with its rich biodiversity and heavy reliance on agricultural production, is one of the fastest-growing pesticide markets in the world, so protecting it from the harmful effects of neonicotinoids is vital to ensuring a sustainable agriculture that provides food security. The Academy of Science of South Africa (ASSAf), in collaboration with the German National Academy of Sciences Leopoldina and the Network of African Science Academies (NASAC) has recently completed a project exploring the use and effects of neonicotinoids in African agriculture. This project brought together experts from 17 African countries, reviewed the relevant African scientific literature, and analysed the state of knowledge on neonicotinoids and their impact on ecosystem services for agriculture and on biodiversity in Africa. The resultant report ‘Neonicotinoid insecticides: use and effects in African agriculture. A review and recommendations to policy makers’ (NASAC, 2019) has collated an unprecedented amount of information, identified gaps in scientific knowledge and research relating to neonicotinoids in Africa, and developed key recommendations from science to policy-makers to ensure the sustainability of African agriculture and thus food security. One year after the launch of the NASAC report, the purpose of this virtual event was to introduce the report, including an update on recent global scientific and African policy developments regarding neonicotinoids, and to discuss its implications with a wide range of stakeholders, with the aim of stimulating policy and research action on this important issue. The target audience and participants included South African and Southern African Development Community (SADC) policymakers, regulatory agencies, government departments, agricultural associations, extension-service providers, research institutes, international development agencies, representatives of embassies, and other interested stakeholders.

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“…Furthermore, many contaminants accumulate in this area. Therefore, a wide range of pollutants, such as heavy metals [34], pesticides [35], persistent organic pollutants [36,37], pharmaceuticals [38], antibiotics [39], and PAHs in seawater and sediment have been monitored. These contaminants are continuously deposited in coastal areas, with vertical distributions in the intertidal and supralittoral zones.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Polycyclic Aromatic Hydrocarbons in Wharf Roach (Ligia spp.) and Environmental Components of the Intertidal and Supralittoral Zone along the Japanese Coast

Honda

Mukai

Nagato

et al. 2021

IJERPH

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Polycyclic aromatic hydrocarbon (PAH) concentrations in wharf roach (Ligia spp.), as an environmental indicator, and in environmental components of the intertidal and supralittoral zones were determined, and the PAH exposure pathways in wharf roach were estimated. Wharf roaches, mussels, and environmental media (water, soil and sand, and drifting seaweed) were collected from 12 sites in Japan along coastal areas of the Sea of Japan. PAH concentrations in wharf roaches were higher than those in mussels (median total of 15 PAHs: 48.5 and 39.9 ng/g-dry weight (dw), respectively) except for samples from Ishikawa (wharf roach: 47.9 ng/g-dw; mussel: 132 ng/g-dw). The highest total PAH concentration in wharf roach was from Akita (96.0 ng/g-dw), followed by a sample from Niigata (85.2 ng/g-dw). Diagnostic ratio analysis showed that nearly all PAHs in soil and sand were of petrogenic origin. Based on a correlation analysis of PAH concentrations between wharf roach and the environmental components, wharf roach exposure to three- and four-ring PAHs was likely from food (drifting seaweed) and from soil and sand, whereas exposure to four- and five-ring PAHs was from several environmental components. These findings suggest that the wharf roach can be used to monitor PAH pollution in the supralittoral zone and in the intertidal zone.

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Occurrence of neonicotinoids and fipronil in estuaries and their potential risks to aquatic invertebrates

Cited by 68 publications

References 35 publications

Time-Cumulative Toxicity of Neonicotinoids: Experimental Evidence and Implications for Environmental Risk Assessments

Time-Cumulative Toxicity of Neonicotinoids: Experimental Evidence and Implications for Environmental Risk Assessments

Social, Psychological and Health Impact of Coronavirus Disease (COVID-19) on the Elderly: South African and Italian Perspectives

Correlation between Polycyclic Aromatic Hydrocarbons in Wharf Roach (Ligia spp.) and Environmental Components of the Intertidal and Supralittoral Zone along the Japanese Coast

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