Pesticide management and their residues in sediments and surface and drinking water in the Mekong Delta, Vietnam

Toan, Pham Van; Sebesvári, Zita; Braun, Melanie; Rosendahl, Ingrid; Renaud, Fabrice G.

doi:10.1016/j.scitotenv.2013.02.026

Cited by 199 publications

(93 citation statements)

References 24 publications

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“…It is most frequently detected in agricultural soil, surface water, and sediment [9,10]. The concentrations of butachlor range from 0.1 to 1.4 lg/L in surface water [11,12].…”

Section: Introductionmentioning

confidence: 99%

Butachlor causes disruption of HPG and HPT axes in adult female rare minnow (Gobiocypris rarus)

Zhu

Zha

et al. 2014

Chemico-Biological Interactions

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a b s t r a c tButachlor is a chloroacetamide herbicide widely used in Asia, and may enter the aquatic environment through agricultural application. In this study, plasma VTG and hormone levels (E2, 11-KT, T3 and T4) were determined after the female rare minnow (Gobiocypris rarus) was exposed to butachlor at environmental relevant concentrations (0, 0.1, 1, and 10 lg/L) for 40 days. The mRNA levels of the HPG axisrelated genes (gnrh, era, vtg, star, lhr, 3b-hsd, cyp11a, cyp17, cyp19a and cyp19b), and the HPT axis-related genes (tra, dio1, dio2, and dio3) were quantified after 20 and 40 days exposure to butachlor. For the HPG axis, the plasma 11-KT was increased at exposure concentration of 10 lg/L, and VTG was significantly decreased at 1 lg/L. Functional genes like gnrh and cyp19b in the brains, star, lhr, cyp11a, 3b-hsd, and cyp19a in the ovaries, and era and vtg in livers were up-regulated. For the HPT axis, the results showed that plasma T4 levels were significantly increased, the gene expression of dio1 was up-regulated, dio2 showed no significant variation, and dio3 was down-regulated in the livers. These results indicated that butachlor may promote the accumulation of T4 in fish through inactive deiodinase type 3. The transcription of HPG axis-related genes could serve as an auto-regulation of hormone levels after exposure to butachlor. Furthermore, the activation of gnrh may play an important role as a feed-back mechanism in the regulation of hormone levels and crosstalk of endocrine axes.

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“…It is most frequently detected in agricultural soil, surface water, and sediment [9,10]. The concentrations of butachlor range from 0.1 to 1.4 lg/L in surface water [11,12].…”

Section: Introductionmentioning

confidence: 99%

Butachlor causes disruption of HPG and HPT axes in adult female rare minnow (Gobiocypris rarus)

Zhu

Zha

et al. 2014

Chemico-Biological Interactions

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show abstract

“…The increasing number of pesticide trade names of category II is associated with an increasing use of category II pesticides by farmers. Around 100 pesticide trade names corresponding to more than 50 different active ingredients, from more than 20 chemical groups, were used in surveyed areas (Toan et al, 2013). According to a survey among chemical groups used by respondent farmers in the Mekong river delta, the most commonly used pesticides were conazole fungicides followed by pyrethroid insecticides and biopesticides.…”

Section: Pesticides Marketmentioning

confidence: 99%

Risk Factors for Non-communicable Diseases in Vietnam: A Focus on Pesticides

Dang

Nguyen

Tran

et al. 2017

Front. Environ. Sci.

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“…Nevertheless, research on pesticide degradation, especially biodegradation of carbendazim in the Mekong delta is still humble in number. Some research explained the sorption of carbendazim on soils (Berglof et al, 2002) and monitored carbamate, pyrethroides, and triazoles residues in sediment and surface water (Toan et al, 2013). Therefore, this study aimed at isolation of bacteria able to degrade carbendazim from rice paddy soil with a long history of carbendazim application.…”

Section: …………………………………………………………………………………………………… Introduction:-mentioning

confidence: 99%

Isolation and Characterization of Carbendazim-Degrading Bacteria in Rice Paddy Soil in Can Tho, Vietnam.

Le¹,

Le²,

Nguyen³

2017

IJAR

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Pesticide management and their residues in sediments and surface and drinking water in the Mekong Delta, Vietnam

Cited by 199 publications

References 24 publications

Butachlor causes disruption of HPG and HPT axes in adult female rare minnow (Gobiocypris rarus)

Butachlor causes disruption of HPG and HPT axes in adult female rare minnow (Gobiocypris rarus)

Risk Factors for Non-communicable Diseases in Vietnam: A Focus on Pesticides

Isolation and Characterization of Carbendazim-Degrading Bacteria in Rice Paddy Soil in Can Tho, Vietnam.

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