Bibliographic citations
Ortiz, N., (2022). Estudio parasitológico e histopatológico de metazoarios en el tracto intestinal de Corydoras jumbo (Brochis multiradiatus) colectados en la ciudad de Iquitos, Loreto-Perú [Universidad Peruana Cayetano Heredia]. https://hdl.handle.net/20.500.12866/12494
Ortiz, N., Estudio parasitológico e histopatológico de metazoarios en el tracto intestinal de Corydoras jumbo (Brochis multiradiatus) colectados en la ciudad de Iquitos, Loreto-Perú []. PE: Universidad Peruana Cayetano Heredia; 2022. https://hdl.handle.net/20.500.12866/12494
@mastersthesis{renati/910476,
title = "Estudio parasitológico e histopatológico de metazoarios en el tracto intestinal de Corydoras jumbo (Brochis multiradiatus) colectados en la ciudad de Iquitos, Loreto-Perú",
author = "Ortiz Arias, Nathaly Maura",
publisher = "Universidad Peruana Cayetano Heredia",
year = "2022"
}
In Peru, the export of ornamental fish generates several jobs involving thousands of people. Among the ornamental fish with the highest demand in international markets, the "jumbo corydora" stands out, Brochis multiradiatus, a catfish belonging to the Callichthyidae family. However, this production can be affected by various microorganisms, including parasites that are the cause of high mortality, causing economic losses. Unfortunately, studies of parasites in Amazonian fish are very scarce, so it would be very favorable to generate more information on these species. The objective of this work was to identify the parasitic metazoans present in corydoras jumbo (Brochis multiradiatus) collected in the city of Iquitos and to evaluate the histopathological lesions at the level of the intestinal tract associated with the presence of these organisms. Thirty adult specimens of B. multiradiatus were collected from ornamental fish collection centers in the city of Iquitos. The fish were examined at the IIAP Fish Parasitology Laboratory. Internal organs of the digestive tract were analyzed, the parasites found were processed and observed in a phase contrast microscope, obtaining images of the structures of the metozoa. A total of 811 metazoans were collected in 30 fish, registering metacercariae of Tylodelphys sp in 28 fish with a prevalence (P) of (93.3%), mean intensity (MI) 25% and mean abundance (AM) 23.3%. Nematode larvae were found in 19 fish, obtaining a prevalence (P) of 63.3%, mean intensity (MI) 4.26% and mean abundance (AM) 2.7%. Procamallanus (Spirocamallanus) pintoi was observed in 9 fish, obtaining a prevalence (P) of 30%, mean intensity (IM) 3.33% and mean abundance (AM) 1%. In the histopathological study of the intestine, the presence of parasitic granulomas and bacterial nests was found. The main lesions were degenerative, transepithelial lymphocyte infiltration 83.3% and inflammatory, epithelial cell desquamation 86.6%. With this study it is concluded that the presence of Procamallanus (Spirocamallanus) pintoi and Tylodelphys sp generate different types of lesions in the intestine in corydoras jumbo, greatly affecting their production, being reflected in the sudden mortality of specimens raised in captivity.
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