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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Impacts of Salinity and Temperature on the Thyroidogenic Effects of the Biocide Diuron in Menidia beryllina

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Author(s):
Moreira, Lucas Buruaem [1, 2] ; Diamante, Graciel [1] ; Giroux, Marissa [1] ; Coffin, Scott [1] ; Xu, Elvis Genbo [1] ; Abessa, Denis Moledo de Souza [2] ; Schlenk, Daniel [1]
Total Authors: 7
Affiliation:
[1] Univ Calif Riverside, Dept Environm Sci, 900 Univ Ave, Riverside, CA 92521 - USA
[2] Sao Paulo State Univ, Inst Biosci, BR-11330900 Sao Vicente - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Environmental Science & Technology; v. 52, n. 5, p. 3146-3155, MAR 6 2018.
Web of Science Citations: 4
Abstract

Diuron is a herbicide used in agricultural and urban settings and also as an antifouling agent. Recent studies have indicated sublethal responses of diuron in the endocrine system of fish and amphibians. Given the potential of climate change to also alter fish endocrinology, the combination of environmental stressors with diuron may contribute to its sublethal toxicity. In this study, the effects of temperature and salinity on thyroid targets of diuron were assessed in juveniles of the estuarine fish Menidia beryllina under different conditions of salinity (10 and 20 parts per thousand) and temperature (10 and 20 degrees C). Environmentally relevant concentrations of diuron affected the growth, and the higher temperature reduced the condition factor of animals. Increased levels of T3 were observed in fish from all treatments, and at 10 degrees C, T4 levels were augmented at 10 parts per thousand but reduced at 20 parts per thousand. Increased gene expression of deiodinases at 20 parts per thousand in both temperatures suggests the influence of salinity on the regulation of hormone imbalance via deiodination pathway activation. Decreased transcripts of thyroid and growth hormone receptors were also observed following diuron treatment. These results indicate that changes in environmental stressors may have significant impacts on the ecological risk of diuron in estuarine fish. (AU)

FAPESP's process: 16/01091-8 - Effects of antifouling booster biocides irgarol and diuron on endocrine system of soft-bottom flatfish Pleuronichthys verticalis (Jordan & Gilbert, 1880)
Grantee:Lucas Buruaem Moreira
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor