HEfectos histopatologicos de Amyloodinium ocellatum (E.-M.Brown) E.-M.Brown & Hovasse, 1946 (Alveolata: Dinophyseae) en las branquias de Mugil liza (Valenciennes, 1836)
In this work, we describe lesions produced by the dinoflagellate protozoan Amyloodinium ocellatum on the gills of Mugil liza, which causes the velvet disease in several fish species. These parasites produce severe lesions in the gills, with hyperplasia of primary and secondary gill lamellae rupture...
| Authors: | , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2023 |
| Country: | Ecuador |
| Institution: | Universidad Técnica de Manabi |
| Repository: | Revista Aquatechnica |
| Language: | Spanish |
| OAI Identifier: | oai:ojs2.revistas.utm.edu.ec:article/5909 |
| Online Access: | https://revistas.utm.edu.ec/index.php/aquatechnica/article/view/5909 |
| Access Level: | Open access |
| Keyword: | branquias; histopatología; Mugil liza; parásito brânquias; histopatologia; Mugil liza; parasita gills; histopathology; Mugil liza; parasite |
| Summary: | In this work, we describe lesions produced by the dinoflagellate protozoan Amyloodinium ocellatum on the gills of Mugil liza, which causes the velvet disease in several fish species. These parasites produce severe lesions in the gills, with hyperplasia of primary and secondary gill lamellae rupture of pillar cells, and hyperplasia of chloride cells (ionocytes). The gill structure is totally affected, which presumably impairs normal hematosis and electrolyte regulation and seriously compromises the fish's health. The lesions caused by A. ocellatum are responsible for high mortality rates in fish farms and economic losses in the industry. In the present study, we found cellular hyperplasia of the respiratory epithelium, epithelial disruption, the collapse of secondary lamellae, and various degenerative changes that seriously compromise the gill functioning. |
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