Toxicity of diafenthiuron to honey bees in laboratory, semi-field and field conditions

Stanley, J.; Чандрасекаран, С.; Preetha, G.; Kuttalam, S.

doi:10.1002/ps.1900

Cited by 23 publications

(8 citation statements)

References 18 publications

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“…But very few studies have addressed toxic responses at all levels with regards to native bees (Osborne 2012). For India, there is only one example of this kind, where the response of A. cerana to pesticide application in a cardamom plantation in India (Stanley et al 2010) was investigated through field experiment.…”

Section: Discussionmentioning

confidence: 99%

Pesticide-induced oxidative stress in laboratory and field populations of native honey bees along intensive agricultural landscapes in two Eastern Indian states

et al. 2014

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Pesticides have been cited as one of the major drivers of pollinator loss. However, little is known about pesticide impacts on natural populations of native honey bee species. This study looked into the effect of pesticides with respect to oxidative stress in the laboratory and in field populations of two native Indian honey bee species (Apis dorsata and A. cerana) by examining a combination of biomarkers, e.g., superoxide dismutase, catalase and xanthine oxidase. A significant upregulation of all three biomarkers was observed in both treated individuals in laboratory experiments and field populations sampled from a pesticide use gradient. This study reports, for the first time, an increase in expression of xanthine oxidase in an invertebrate system (honey bees) exposed to pesticides.

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Section: Discussionmentioning

confidence: 99%

Pesticide-induced oxidative stress in laboratory and field populations of native honey bees along intensive agricultural landscapes in two Eastern Indian states

et al. 2014

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“…1e) and other degradation products 13 . However, research results indicate that the degradation products of diafenthiuron are more toxic than the original diafenthiuron parent 14 . Moreover, these decomposition products have an accumulative effect on the toxicity of target organs such as the lung and liver 15 .…”

Section: Introductionmentioning

confidence: 99%

“…Numerous residue limits for different pesticides had been formulated on tea by various countries and authoritative organizations, among which the maximum residue limits (MRLs) of chlorfenapyr and diafenthiuron was 20 mg kg −1 and 5 mg kg −1 , respectively, in China 25 . Additionally, the metabolites of the two pesticides are easily ignored and could have an accumulative effect on the toxicity of target organs based on the previous research and threaten human health 7,14 . Moreover, the residue definitions of both pesticides included their corresponding metabolites 26 .…”

Section: Introductionmentioning

confidence: 99%

“…13 However, research results indicate that the degradation products of diafenthiuron are more toxic than the original diafenthiuron parent. 14 Moreover, these decomposition products have an accumulative effect on the toxicity of target organs such as the lung and liver. 15 The widespread use of diafenthiuron will inevitably cause pollution to the environment and threaten human health.…”

Section: Introductionmentioning

confidence: 99%

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Residue analysis, dissipation patterns of chlorfenapyr, diafenthiuron and their corresponding metabolites in tea trees, and dietary intake risk assessment

et al. 2022

J Sci Food Agric

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BACKGROUND: Recently, chlorfenapyr and diafenthiuron have been widely used to prevent and control diseases and pests in tea production. However, rare studies have investigated the dissipation patterns of chlorfenapyr, diafenthiuron and their metabolites simultaneously in tea matrices. Here, we established an analytical method to investigate the degradation patterns of five target compounds in tea shoots and made tea samples. Moreover, the dietary intake risk assessment of chlorfenapyrdiafenthiuron mixture among Chinese populations was evaluated based on the supervised field experiment.RESULTS: The mean recoveries of the primary analytes at five spiking levels were between 95.6% and 112.6% in tea shoots and made tea, respectively, and the values of RSD (relative standard deviation) were lower than 9.7% for all the target analytes. The field trial results showed that the half-lives of chlorfenapyr and diafenthiuron based on the residue definition were 10.0-12.4 days and 4.3-5.9 days, respectively, in tea shoots. For the dietary intake risk assessment, the risk quotient (RQ) values in made tea ranged from 30.4% to 73.9% at the pre-harvest interval of 14 days, which were significantly less than 100%.CONCLUSION: The accuracy and precision of the developed method were satisfied by the measurement requirements according to the validation results. The dynamic dissipation experiments suggested that diafenthiuron was much easier to dissipate than chlorfenapyr. Moreover, the existence of tralopyril made the half-life of chlorfenapyr significantly increase, indicating that practical application of chlorfenapyr should take careful consideration of its metabolite. Finally, the potential chronic dietary risks of the chlorfenapyr-diafenthiuron mixture to human communities were within the acceptable range.

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“…Diafenthiuron is reported to be effective against whiteflies and leaf hoppers in brinjal [3,4], whiteflies, aphids and thrips in tomato [5][6][7], thrips and mitesin chilies and tea [8,9], and all sucking pests in cotton [10,11]. Diafenthiuron is effective against diamondback moth (DBM) [12,13], shoot and capsule borer, and thrips in cardamom [14] and it is gaining momentum now in cardamom plantations. Cardamom is an important spice crop grown all over the world and one of the important products fetching enormous foreign exchange.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Diafenthiuron Residues in Cardamom (Elettaria cardamomum (L.) Maton) Using Normal Phase HPLC: Dissipation Pattern and Safe Waiting Period in Green and Cured Cardamom Capsules

Stanley

Чандрасекаран

Preetha

et al. 2014

Chromatography Research International

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Diafenthiuron is an effective insecticide used for pest management in cardamom. Residues of diafenthiuron and its degradation/dissipation pattern in cardamom were determined to work out safe waiting period. Samples were collected after three sprays of diafenthiuron @ 400 and 800 g a.i ha−1 and the residues extracted in acetonitrile and quantified in normal phase HPLC in UV detector. Diafenthiuron was detected in 6.61±0.1 min. The limits of detection (LOD) and limits of quantification (LOQ) were determined to be 0.01 and 0.05 μgmL−1. The initial deposits were found to be 3.82 and 4.10 μg g−1 after sprays of diafenthiuron @ 400 g a.i ha−1 in the first and second experiments, respectively. Nearly cent percent of residues dissipated at 10 days after treatment in the recommended dose of diafenthiuron 400 g a.i ha−1 and the half life varied from 2.0 to 2.8 days with a waiting period of 5.5 to 6.7 days in green capsules of cardamom. The waiting period was 5.4 to 7.0 days in cured capsules of cardamom. With harvest being the focal point for enforcement of residue tolerances, the suggested waiting period of seven days is safe without the problem of pesticide residues in harvestable produce.

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Toxicity of diafenthiuron to honey bees in laboratory, semi-field and field conditions

Cited by 23 publications

References 18 publications

Pesticide-induced oxidative stress in laboratory and field populations of native honey bees along intensive agricultural landscapes in two Eastern Indian states

Pesticide-induced oxidative stress in laboratory and field populations of native honey bees along intensive agricultural landscapes in two Eastern Indian states

Residue analysis, dissipation patterns of chlorfenapyr, diafenthiuron and their corresponding metabolites in tea trees, and dietary intake risk assessment

Estimation of Diafenthiuron Residues in Cardamom (Elettaria cardamomum (L.) Maton) Using Normal Phase HPLC: Dissipation Pattern and Safe Waiting Period in Green and Cured Cardamom Capsules

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