Piscine orthoreovirus-3 is prevalent in wild seatrout (Salmo trutta L.) in Norway

Piscine orthoreovirus-3 is prevalent in wild seatrout (Salmo trutta L.) in Norway

© 2019 The Authors. Journal of Fish Diseases Published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Journal of fish diseases. - 1998. - 42(2019), 3 vom: 19. März, Seite 391-396
1. Verfasser: Garseth, Åse Helen (VerfasserIn)
Weitere Verfasser: Moldal, Torfinn, Gåsnes, Siri Kristine, Hjortaas, Monika Jankowska, Sollien, Vegard Pedersen, Gjevre, Anne-Gerd
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Journal of fish diseases
Schlagworte:Journal Article Arctic char (Salvilinus alpinus L.) Atlantic salmon (Salmo salar L.) PRV-3 landlocked trout (Salmo trutta L.) wild
Beschreibung
Zusammenfassung:© 2019 The Authors. Journal of Fish Diseases Published by John Wiley & Sons Ltd.
In 2017, a PCR-based survey for Piscine orthoreovirus-3 (PRV-3) was conducted in wild anadromous and non-anadromous salmonids in Norway. In seatrout (anadromous Salmo trutta L.), the virus was present in 16.6% of the fish and in 15 of 21 investigated rivers. Four of 221 (1.8%) Atlantic salmon (Salmo salar L.) from three of 15 rivers were also PCR-positive, with Ct-values indicating low amounts of viral RNA. All anadromous Arctic char (Salvelinus alpinus L.) were PCR-negative. Neither non-anadromous trout (brown trout) nor landlocked salmon were PRV-3 positive. Altogether, these findings suggest that in Norway PRV-3 is more prevalent in the marine environment. In contrast, PRV-3 is present in areas with intensive inland farming in continental Europe. PRV-3 genome sequences from Norwegian seatrout grouped together with sequences from rainbow trout (Oncorhynchus mykiss Walbaum) in Norway and Coho salmon (Oncorhynchus kisutch Walbaum) in Chile. At present, the origin of the virus remains unknown. Nevertheless, the study highlights the value of safeguarding native fish by upholding natural and artificial barriers that hinder introduction and spread, on a local or national scale, of alien fish species and their pathogens. Accordingly, further investigations of freshwater reservoirs and interactions with farmed salmonids are warranted
Beschreibung:Date Completed 01.04.2019
Date Revised 09.01.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1365-2761
DOI:10.1111/jfd.12943