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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.)

Histopathological effects of the herbicide atrazine on gills of the Brazilian endemic bivalve Diplodon expansus

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Author(s):
Nogarol, Larissa Rosa [1] ; Brossi-Garcia, Ana Luiza [1] ; de Souza, Raphael Bastao [1] ; Fontanetti, Carmem Silvia [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ, UNESP, Dept Biol, Inst Biosci, BR-13506900 Rio Claro, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY; v. 96, n. 4, p. 387-403, MAR 15 2016.
Web of Science Citations: 1
Abstract

Due to their benthic filter-feeding habits and high bioaccumulation potential of metals and organic compounds, bivalve molluscs have been widely used in studies in the field and laboratory to assess the toxic effects of several compounds discharged in rivers, oceans and estuaries. However, most ecotoxicological studies use invasive exotic species, while the response of native species is poorly known. The Brazilian endemic species Diplodon expansus occurs in rivers near areas of intense agricultural activity, and atrazine is currently one of the main residues of pesticides found in water bodies of the Brazilian territory. This study was aimed at examining the toxicity of different atrazine concentrations to a Brazilian native mollusc by analysing the histology, histochemistry and ultrastructure of its gill filaments. The cells that comprise the frontal and intermediary regions of gill filaments were the most affected by the herbicide and responses associated with damage and protection were observed. The response of tissues and cells were dose-dependent. Higher concentrations of herbicide caused more severe alterations in large areas of the gills. The persistence of the alterations observed might result in severe functional problems in the gills of these animals, negatively affecting their performance and health. (AU)

FAPESP's process: 09/12489-9 - Tissular and cellular responses of the native freshwater bivalve Diplodon expansus exposed to trace concentrations of atrazine herbicide.
Grantee:Larissa Rosa Nogarol
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 12/50197-2 - Action of products used in cultivation of sugar cane on non-target organisms
Grantee:Carmem Silvia Fontanetti Christofoletti
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants