Can Ulcerative Dermal Necrosis (UDN) in Atlantic salmon be attributed to ultraviolet radiation and secondary Saprolegnia parasitica infections?. (June 2022)

• Record Type: Journal Article
• Authors: Henard, Cyril; Saraiva, Marcia R.; Ściślak, Magdalena E.; Ruba, Tahmina; McLaggan, Debbie; Noguera, Patricia; van West, Pieter
• Is Part Of: Fungal biology reviews. Volume 40(2022)
• Page Start: 70
• Page End: 75
• Publication Date: 2022-06
• Subjects: Atlantic salmon -- Saprolegnia parasitica -- Skin damage -- Stress factor -- Ulcerative dermal necrosis -- Ultraviolet radiation; Mycology -- Periodicals; Fungi -- Periodicals; Mycologie -- Périodiques; Champignons -- Périodiques; Electronic journals; Periodicals; Périodiques; 579.505
• DOI: 10.1016/j.fbr.2022.02.002
• Languages: English
• ISSNs: 1749-4613

Abstract

Abstract: Ulcerative dermal necrosis (UDN), a chronic skin condition, affects primarily mature wild salmonids returning from the sea to freshwater for their spawning. The involvement of water moulds such as Saprolegnia parasitica as a secondary pathogen in this disease is clear but the identification of a primary cause or of primary pathogen(s) remains elusive. In this opinion article, we re-visit UDN regarding epidemiology, pathology and aetiology and speculate the potential involvement of UV radiation in the initiation of UDN in salmonid fish returning from the sea.