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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Pathological and Phylogenetic characterisation of Amphibiothecum sp. infection in an isolated amphibian (Lissotriton helveticus) population on the island of Rum (Scotland)
Author(s): Fiegna, Caterina
Clarke, Charlotte L
Shaw, Darren J
Baily, Johanna
Clare, Frances C
Gray, Alexandra
Garner, Trenton J
Meredith, Anna L
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Keywords: Amphibiocystidium
palmate newts
Issue Date: Apr-2017
Citation: Fiegna C, Clarke CL, Shaw DJ, Baily J, Clare FC, Gray A, Garner TJ & Meredith AL (2017) Pathological and Phylogenetic characterisation of Amphibiothecum sp. infection in an isolated amphibian (Lissotriton helveticus) population on the island of Rum (Scotland), Parasitology, 144 (4), pp. 484-496.
Abstract: Outbreaks of cutaneous infectious disease in amphibians are increasingly being attributed to an overlooked group of fungal-like pathogens, the Dermocystids. During the last 10 years on the Isle of Rum, Scotland, palmate newts (Lissotriton helveticus) have been reportedly afflicted by unusual skin lesions. Here we present pathological and molecular findings confirming that the pathogen associated with these lesions is a novel organism of the order Dermocystida, and represents the first formally reported, and potentially lethal, case of amphibian Dermocystid infection in the UK. Whilst the gross pathology and the parasite cyst morphology were synonymous to those described in a study from infectedL. helveticusin France, we observed a more extreme clinical outcome on Rum involving severe subcutaneous oedema. Phylogenetic topologies supported synonymy between Dermocystid sequences from Rum and France and as well as their distinction fromAmphibiocystidiumspp. Phylogenetic analysis also suggested that the amphibian-infecting Dermocystids are not monophyletic. We conclude that theL. helveticus-infecting pathogen represents a single, novel species;Amphibiothecum meredithae.
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