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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.)

Morphological and Histochemical Characterization of Gill Filaments of the Brazilian Endemic Bivalve Diplodon expansus (Kuster, 1856) (Mollusca, Bivalvia, Hyriidae)

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Author(s):
Nogarol, Larissa Rosa [1] ; Brossi-Garcia, Ana Luiza [1] ; de Oliveira David, Jose Augusto [2] ; Fontanetti, Carmem Silvia [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ, UNESP, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Fed Espirito Santo, BR-29500000 Alegre, ES - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Microscopy and Microanalysis; v. 18, n. 6, p. 1450-1458, DEC 2012.
Web of Science Citations: 1
Abstract

This study presents the morphological description and histochemical characterization of gill filaments of the Brazilian endemic bivalve Diplodon expansus, aiming to broaden the morphological knowledge of this species and establish the structure of the gills that will serve as control in histopathological studies applied to biomonitoring. The gill filaments are divided into three zones: frontal, intermediate, and abfrontal. In the center of the filament, haemocytes circulate through the haemolymph vessel, which is internally lined by endothelium. The frontal surface of the filament is covered with cilia, the lateral surface exhibits aquifer ducts, and the abfrontal surface presents ciliated and nonciliated cells. The epithelium of the filaments is composed of ciliated cells, nonciliated absorptive cells, and mucocytes. The support of the filaments is made by two specialized structures called skeletal rod and skeletal loop. Based on the obtained information, the gill filaments of the studied species present some peculiar characteristics that are not yet reported in detail in the literature such as the simultaneous presence of skeletal rod and skeletal loop. On the other hand, the general constitution of the filament is similar to that described for both marine and limnic bivalves and seems to be suitable for ecotoxicological studies. (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