Effects of a Thiamethoxam-Based Insecticide on the Life History of Chironomus xanthus

Ferreira-Junior, Diogenis F.; Sarmento, Renato Almeida; Saraiva, Althiéris S.; Dornelas, Aline Silvestre Pereira; Pestana, João L.T.; Soares, Amadeu M.V.M.

doi:10.1007/s11270-018-3994-8

Cited by 14 publications

(3 citation statements)

References 56 publications

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“…The bioavailability hypothesis could be also corroborated by evidence from insects presenting an exoskeleton which seems to be more tolerant to Actara [25][26][27][28][29][30][31]44,45] than to Cruiser [20] or pure TMX [21,[46][47][48][49][50][51][52][53][54]. Thus, further studies determining the effects of different insecticide formulations to non-target species could be helpful to explore the ability of different species to cope with the formulation ingredients as a whole and how absorption changes according to the nature of those formulations or the tegument of the species.…”

Section: Discussionmentioning

confidence: 87%

“…Specifically, planarians were more tolerant to Actara than Diptera [25], Coleoptera [26], Lepdoptera [27], Hymenoptera [28], Homoptera [29], and Hemiptera [30], but not more tolerant than the coleopteran species Callosobruchus maculates [31], Adalia bipunctata, and Coccinella undecimpunctata [30]. Interestingly, studies with Cruiser formulation or pure TMX active ingredient always showed lower LC 50 values, overall lower than 100 µg•L −1 [20,21,32], compared to the values we found in this study, which are in the mg•L −1 range. The de-creased sensitivity exhibited by planarians to Actara adds relevant information to what we already know about the effects of neonicotinoids and some formulations using the active ingredient TMX.…”

Section: Discussionmentioning

confidence: 99%

“…Previous research reported the effects of TMX, either pure or within a commercial formulation, on the survival of organisms. It has been demonstrated that the (eco)toxicological effect concentrations of TMX ranges from 0.1 to 225 µg•L −1 [19], being 32 µg•L −1 for Chironomus xanthus and 86.41 µg•L −1 for Chironomus riparius [20,21]. For planarians exposed to Cruiser ® formulation, a median lethal concentration of ~400 mg TMX•L −1 suggests that planarians are less sensitive to TMX when compared to other non-target invertebrate species [22].…”

Section: Introductionmentioning

confidence: 99%

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Eco(toxicological) Assessment of the Neonicotinoid Formulation Actara® Using Planarian Girardia tigrina as Model Organism

et al. 2022

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Neonicotinoid pesticides are one of the most commercialized groups worldwide. Their application in agriculture aims to control pests through a systemic mode of action which is not specific to target species. Our study aimed to evaluate the effects of the insecticide Actara® [active ingredient thiamethoxam (TMX)] on a non-target species, Girardia tigrina. Therefore, acute and sublethal endpoints, such as mortality, feeding activity, locomotion and behavioral biomarkers were assessed. Actara® exerted low toxicity towards the planarian Girardia tigrina, showing a 96 h LC50 value of 77.6 mg TMX·L−1 (95% C.I: 74.1–81.2 mg TMX·L−1; R2 = 0.85). At the sublethal level, Actara® exerted no effect on regeneration of photoreceptors and auricles of planarians after 24 and 48 h post-exposure (NOEC > 7.8 mg TMX·L−1). The feeding rate of planarians was significantly increased by Actara®, but only at the highest tested concentration (LOEC = 7.8 mg TMX·L−1). Planarians showed to be less sensitive to the active ingredient TMX compared to other freshwater species. This might be explained by the presence of a high proportion of sub-types of acetylcholine receptors in planarians, exhibiting low binding affinity sites for TMX, an acetylcholine partial agonist. The comparison between effects induced by Actara® with the ones caused by other formulations, in planarians, might support our understanding of how other unknown ingredients can modify the uptake, and bioavailability of such substances, as well as the detoxification capacity of planarians, all of which influences toxicity.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Eco(toxicological) Assessment of the Neonicotinoid Formulation Actara® Using Planarian Girardia tigrina as Model Organism

et al. 2022

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Prioritization of Pesticides for Assessment of Risk to Aquatic Ecosystems in Canada and Identification of Knowledge Gaps

Anderson

Marteinson

Prosser

2021

Reviews of Environmental Contamination and Toxicology

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Chironomus sancticaroli (Diptera: Chironomidae) in ecotoxicology: laboratory cultures and tests

et al. 2023

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Chironomus sancticaroli is a species restricted to tropical environments, easy to grow and to maintain in laboratory cultures. C. sancticaroli usually has many generations per year, which is an important criteria for selecting a test organism in ecotoxicology. This study aimed to: (1) review the methods for C. sancticaroli cultivate and its use in ecotoxicological tests, (2) establish a laboratory culture of C. sancticaroli, presenting the di culties and discussing the ways to overcome them. The 4th instar larvae was the most used in acute studies, while the 1st instar larvae was the most used in chronic studies; 96 hours and 28 days were the most frequent durations in acute and chronic studies, respectively. The most common endpoints evaluated were organisms' survival and development, and most of the ecotoxicological studies using C. sancticaroli were performed in laboratory. Most of the tested contaminants were of the group of pesticides and these were also the ones that had the most adverse effects on organisms. Most mesocosms with environmental contaminated samples did not show adverse effects on C. sancticaroli. Chronic and eld studies as well as those testing the effects of the mixture contaminants on C. sancticaroli were still de cient. Keeping the laboratory environment and equipment effectively sanitized was important for the success of the cultivate as well as maintain stabilized conditions of temperature, photoperiod, physical, chemical and biological water quality in cultures. HighlightsChironomus sancticaroli is a tropical macroinvertebrate. C. sancticaroli is usually used in ecotoxicological tests.There are many gaps regarding ecotoxicological tests standards for C. sancticaroli.This study provides recommendations and details to overcoming culture issues.

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Effects of a Thiamethoxam-Based Insecticide on the Life History of Chironomus xanthus

Cited by 14 publications

References 56 publications

Eco(toxicological) Assessment of the Neonicotinoid Formulation Actara® Using Planarian Girardia tigrina as Model Organism

Eco(toxicological) Assessment of the Neonicotinoid Formulation Actara® Using Planarian Girardia tigrina as Model Organism

Prioritization of Pesticides for Assessment of Risk to Aquatic Ecosystems in Canada and Identification of Knowledge Gaps

Chironomus sancticaroli (Diptera: Chironomidae) in ecotoxicology: laboratory cultures and tests

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