Pubblicazione scientifica

Exophiala angulospora infection in hatchery‐reared lumpfish (Cyclopterus lumpus) broodstock

FILONE TECNOLOGICO	TEMA
trasformazione e commercializzazione

RIASSUNTO

Abstract

Samples from moribund lumpfish were collected in a marine hatchery in Scotland in 2015. Black nodules were noted on the skin, and gills and fungal hyphae were extensively distributed in musculature and internal organs. Multifocal chronic inflammatory lesions displaced structures in all affected organs. Mortalities commenced on completion of spawning in May and were evenly distributed over the second year in the temperature range 11–15°C. The main systemic infection causing agent was initially identified based on morphological characteristics as an Exophiala species. Ribosomal DNA (rDNA) ITS regions of the isolates were subsequently sequenced confirming the isolates belonged to Exophiala genus. All isolates fell in a single phylogenetic cluster, which is represented by Exophiala angulospora. Fish were treated with either formalin or Bronopol or a combination of both, but there was no effect on the pattern or numbers of mortalities. Isolates were also tested against three different concentrations of Latrunculin A, Amphotericin B and Itraconazole with no success. It is of utmost importance to increase the knowledge on pathogen–host interactions to successfully develop sustainable control methods.

DATA

Data di pubblicazione: 11/01/2019

AUTORI

SARAIVA MARCIA
BECKMANN MAX J
PFLAUM SARA
PEARSON MARIANNE
CARCAJONA DANIEL
TREASURER JAMES W
VAN WEST PIETER

ENTE DI AFFERENZA

ABERDEEN OOMYCETE LAB
FISH VET GROUP INVERNESS UK
FAI AQUACULTURE ARDTOE MARINE RSCH FACILITY ACHARACLE UK

RIVISTA

Journal of Fish Diseases, 42(3), 335-343

IMPACT FACTOR

2,056

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