当前位置： SCI文献检索 > EUROPEAN JOURNAL OF PROTISTOLOGY期刊下所有文献 > A diversity of amoebae colonise the gills of farmed Atlantic salmon (Salmo salar) with amoebic gill disease (AGD).

A diversity of amoebae colonise the gills of farmed Atlantic salmon (Salmo salar) with amoebic gill disease (AGD).

Abstract：

:Neoparamoeba perurans is the aetiological agent of amoebic gill disease (AGD) in salmonids, however multiple other amoeba species colonise the gills and their role in AGD is unknown. Taxonomic assessments of these accompanying amoebae on AGD-affected salmon have previously been based on gross morphology alone. The aim of the present study was to document the diversity of amoebae colonising the gills of AGD-affected farmed Atlantic salmon using a combination of morphological and sequence-based taxonomic methods. Amoebae were characterised morphologically via light microscopy and transmission electron microscopy, and by phylogenetic analyses based on the 18S rRNA gene and cytochrome oxidase subunit I (COI) gene. In addition to N. perurans, 11 other amoebozoans were isolated from the gills, and were classified within the genera Neoparamoeba, Paramoeba, Vexillifera, Pseudoparamoeba, Vannella and Nolandella. In some cases, such as Paramoeba eilhardi, this is the first time this species has been isolated from the gills of teleost fish. Furthermore, sequencing of both the 18S rRNA and COI gene revealed significant genetic variation within genera. We highlight that there is a far greater diversity of amoebae colonising AGD-affected gills than previously established.

journal_name

Eur J Protistol

journal_title

European journal of protistology

authors

English CJ,Tyml T,Botwright NA,Barnes AC,Wynne JW,Lima PC,Cook MT

doi

10.1016/j.ejop.2018.10.003

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

27-45

eissn

0932-4739

issn

1618-0429

pii

S0932-4739(18)30087-7

journal_volume

67

pub_type

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