Testate amoeba Rhogostoma minus Belar, 1921, associated with nodular gill disease of rainbow trout, Oncorhynchus mykiss (Walbaum)

DYKOVÁ, Iva and Tomáš TYML. Testate amoeba Rhogostoma minus Belar, 1921, associated with nodular gill disease of rainbow trout, Oncorhynchus mykiss (Walbaum). JOURNAL OF FISH DISEASES. HOBOKEN: WILEY-BLACKWELL, 2016, vol. 39, No 5, p. 539-546. ISSN 0140-7775. Available from: https://dx.doi.org/10.1111/jfd.12384.

Basic information

• Original name: Testate amoeba Rhogostoma minus Belar, 1921, associated with nodular gill disease of rainbow trout, Oncorhynchus mykiss (Walbaum)
• Authors: DYKOVÁ, Iva (203 Czech Republic, belonging to the institution) and Tomáš TYML (203 Czech Republic, guarantor, belonging to the institution).
• Edition: JOURNAL OF FISH DISEASES, HOBOKEN, WILEY-BLACKWELL, 2016, 0140-7775.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10600 1.6 Biological sciences
• Country of publisher: United States of America
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 2.138
• RIV identification code: RIV/00216224:14310/16:00087771
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1111/jfd.12384
• UT WoS: 000374555900003
• Keywords in English: naked amoebae; nodular gill disease; Rhogostoma minus; testate amoebae
• Tags: AKR, rivok
• Tags: International impact, Reviewed

Abstract

The case study targeted to determine the aetiology of nodular gill disease (NGD) of farmed rainbow trout. The methods included microscopical examination of gill material in fresh, culturing of isolated organisms, histology, transmission electron microscopy and molecular biology identification. The results revealed an intravital colonization of fish gills by the testate amoeba Rhogostoma minus Belar, 1921. Rhogostoma infection was found in all fish examined microscopically (15/15); in contrast, naked amoebae related to fully developed NGD lesions were found in minority of these fish (5/15). They belonged to four genera, Acanthamoeba, Vermamoeba, Naegleria and Vannella. Results presented in this study contribute to the mosaic of findings that contrary to amoebic gill disease of marine fish turn attention to the possibility of the heterogeneous, multi-amoeba-species and multifactorial aetiology of NGD.

Links

• GBP505/12/G112, research and development project: Name: ECIP - Evropské centrum ichtyoparazitologie

Investor: Czech Science Foundation