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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Changes in thyroid status of Menidia beryllina exposed to the antifouling booster irgarol: Impacts of temperature and salinity

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Autor(es):
Moreira, Lucas Buruaem [1, 2] ; Diamante, Graciel [1] ; Giroux, Marissa [1] ; Xu, Elvis Genbo [1] ; de Souza Abessa, Denis Moledo [2] ; Schlenk, Daniel [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 - USA
[2] Sao Paulo State Univ, Inst Biosci, BR-11330900 Sao Vicente, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Chemosphere; v. 209, p. 857-865, OCT 2018.
Citações Web of Science: 2
Resumo

The triazine-based herbicide irgarol is widely used in antifouling systems as an algicide and has been detected recently in multiple coastal environments. Studies evaluating sub-lethal responses of fish following exposure to irgarol are limited. Moreover, impacts of climate change on fish endocrinology may also contribute to the sublethal toxicity of irgarol. We assessed the effects of irgarol on thyroid endpoints in juveniles of Menidia beryllina under two different treatments of salinity (10 and 20 parts per thousand) and two temperatures (10 and 20 degrees C). Condition factor coefficients (K) of animals were significantly affected by 0.1 to 10 mu g/L of irgarol at the higher temperature. Levels of T3 were changed in whole body homogenates from both temperatures at 10%0 following exposure to 1 to 10 mu g/L T4 levels were altered only at 10 degrees C when animals were treated with 1 to 10 mu g/L (10 parts per thousand), and in 0.1 and 10 mu g/L (20 parts per thousand). Increased transcripts of deiodinase enzymes at 10 degrees C may be impacted by salinity and alter thyroid hormone homeostasis. Impact on gene expression of thyroid (alpha and beta) and growth hormone receptors were also determined. Our results highlight the relevance of environmental variable that may impact the ecological risk of irgarol in estuarine systems. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 16/01091-8 - Efeitos dos biocidas irgarol e diuron sobre o sistema endócrino do peixe bentônico Pleuronichthys verticalis (Jordan & Gilbert, 1880)
Beneficiário:Lucas Buruaem Moreira
Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado