Detection and association of Piscirickettsia salmonis in organ and faeces of coho salmon (Oncorhynchus kisutch) farmed in the sea
DOI:
https://doi.org/10.15381/rivep.v32i2.18041Keywords:
indirect immunofluorescence, piscirickettsiosis, SalmonidaeAbstract
The aim of this study was to diagnose the presence of Piscirickettsia salmonis in samples of coho salmon (Oncorhynchus kisutch) from fish farms in the Los Lagos Region, Chile, which presented outbreaks of piscirickettsiosis. In total, 19 fish with clinical signs of piscirickettsiosis were used. Smears of kidney, liver and splenic tissue and intestinal content were made, and processed using the indirect immunofluorescence test (IFAT) for the detection of P. salmonis through a commercial kit. The data obtained were subjected to the Cochran and McNemar Q test in the Chi square distribution. Higher positivity was found in the liver (68.4%) and kidney (52.6%). In addition, the bacterium was found in the faeces (47.4%), indicating that the elimination via the faeces of the agent is possible under farming conditions. By associating the kidney and liver results, only 78.9% of the fish positive for the bacteria could be detected, while by associating the liver, spleen and faeces results, 100% of the fish positive to P. salmonis can be detected.
Downloads
Downloads
Published
Issue
Section
License
Copyright (c) 2021 Ederson Juan Montalico Pongo, Héctor Rodríguez Papuico, Julio Larenas Herrera, Fernando Ricardo Ardito Saenz
![Creative Commons License](http://i.creativecommons.org/l/by/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution 4.0 International License.
AUTHORS RETAIN THEIR RIGHTS:
a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.
b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigaciones Veterinarias del Perú (RIVEP).
c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating the source of publication (the originator of the work, journal, volume, number and date).