<b> Histopathology of the gills of <i> Paralichthys orbignyanus </i> (Teleostei: paralichthyidae) associated with the parasitis of <i> Therodamas fluviatilis </i> (Copepoda: ergasilidae)</b>
DOI:
https://doi.org/10.5088/atlântica.v34i1.2707Keywords:
Linguado, ectoparasita, patologia, aquicultura, estuário da Lagoa dos PatosAbstract
This study evaluated changes in gill tissue caused by the presence of adult females of Therodamas fluviatilis in Paralichthys orbignyanus caught in the estuary of Patos Lagoon and the adjacent coast, Rio Grande do Sul, Brazil. Macroscopically, the parasites bodies were partially covered by a host tissue reaction. Complete histological series of the flatfish branchial arches were analyzed. Histological analysis showed modified filaments contiguous to the copepods bodies, with possible decrease of the respiratory function. A connective and epithelial hyperplasic reaction marked in the branchial arch involves the parasite anterior end. Both, the presence of copepod and the tissular reaction with massive lymphocytic infiltration, make pressure on the adjacent tissue, narrowing the wall of branchial artery. Moreover, it was found stored ovocytes inside the cephalothorax of T. fluviatilis. An increase in the intensity of the infestation of such parasites is expected under cultivation conditions. Therefore special attention should be paid towards the presence of T. fluviatilis in cultivation due to its pathogenicity to avoid possible economic losses.Downloads
Download data is not yet available.
Downloads
How to Cite
Velloso, A. L., Almeida, F. de M., Cousin, J. C. B., & Pereira, J. (2012). <b> Histopathology of the gills of <i> Paralichthys orbignyanus </i> (Teleostei: paralichthyidae) associated with the parasitis of <i> Therodamas fluviatilis </i> (Copepoda: ergasilidae)</b>. (DESCONTINUADA) Atlântica, 34(1), 47–52. https://doi.org/10.5088/atlântica.v34i1.2707
Issue
Section
Artigos