Scale morphology of Prochilodus lineatus with emphasis on the scale epithelium
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Data
2013-08-01
Autores
Alves, Rebeca Mamede da Silva [UNESP]
Pereira, Bruno Fiorelini [UNESP]
Pitol, Dimitrius Leonardo
Senhorini, José Augusto
Alcantara-Rocha, Rita de Cassia Gimenez
Caetano, Flavio Henrique [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Int Inst Ecology
Resumo
The fish body is entirely covered by a thin, smooth and glandular epidermis, closely attached to the scales inserted on the dermis. The descriptive work on this tissue dates to twenty or thirty years ago, bears very little photographic record and does not focus on the scale epithelium, despite the fact that it is in direct contact with the environment. Thereupon, the present study characterizes the scale epithelium of Prochilodus lineatus, a robust species of fish. The observations show that the scale is completely covered by epithelium thicker on the proximal end of the scale, multilayered on the dorsal surface and undifferentiated on the ventral surface, and covered by mucous producing cells, mostly acid mucous. The scale is formed by plywood-like collagen matrix of collagen type III and supported by a network of elastic fibers on the ventral face. Differentiated cellular types are present, such as club cells, considered to be responsible for the release of alarm substances, which suggests possible use in environmental assessment as a non-invasive technique.
Descrição
Palavras-chave
Curimbat, Morphology, Scale, Epithelium
Como citar
Brazilian Journal of Biology. Sao Carlos: Int Inst Ecology, v. 73, n. 3, p. 637-644, 2013.