Ichthyophonosis in Peruvian rainbow trout Oncorhynchus mykiss: identification of endemic areas using molecular and histopathological tools.
Dis Aquat Organ
; 143: 129-138, 2021 Feb 11.
Article
em En
| MEDLINE
| ID: mdl-33570046
ABSTRACT
Ichthyophonus infection was first detected in Peruvian Oncorhynchus mykiss in 1986, but the occurrence of ichthyophonosis disease in the region is unknown. This study investigated the presence and distribution of Ichthyophonus sp. in Peruvian rainbow trout using traditional and DNA sequencing tools. Between 2007 and 2008, 205 rainbow trout from 13 hatcheries in the Mantaro river basin were examined for the presence of Ichthyophonus, and at that time only 3 farms were positive. This early study confirmed the presence of Ichthyophonus sp. in the Tranca Grande lagoon for the first time, at a prevalence of 50%. In 2012, examination of 240 trout from 24 fish farms in 2 Peruvian Departments found 9 infected farms. More recently, in 2018, Ichthyophonus sp. was found in Lake Titicaca, infecting a trout in the Ichu area (in the Department of Puno). Our molecular analysis of the infected trout showed that ichthyophonosis disease in the Peruvian trout was caused by Ichthyophonus sp. Clade C. The finding of this pathogen in Lake Titicaca should be an alert for nearby farms and entities dealing with fish of economic importance in the rivers of Peru.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oncorhynchus mykiss
/
Mesomycetozoea
/
Doenças dos Peixes
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
America do sul
/
Peru
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article