Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/32210
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Development of diagnostic assays for differentiation of atypical Aeromonas salmonicida vapA type V and type VI in ballan wrasse (Labrus bergylta, Ascanius)
Author(s): Papadopoulou, Athina
Davie, Andrew
Monaghan, Sean J
Migaud, Herve
Adams, Alexandra
Keywords: atypical Aeromonas salmonicida
ballan wrasse
cleaner fish
diagnosis
polymerase chain reaction
Issue Date: Jun-2021
Date Deposited: 26-Jan-2021
Citation: Papadopoulou A, Davie A, Monaghan SJ, Migaud H & Adams A (2021) Development of diagnostic assays for differentiation of atypical Aeromonas salmonicida vapA type V and type VI in ballan wrasse (Labrus bergylta, Ascanius). Journal of Fish Diseases, 44 (6), pp. 711-719. https://doi.org/10.1111/jfd.13334
Abstract: Aeromonas salmonicida (As) is a highly heterogeneous bacterial species, and strains’ host specificity has been reported. Ballan wrasse (Labrus bergylta Ascanius, 1767) is susceptible to atypical As (aAs) vapA type V and type VI in Scotland and Norway. Identification of the bacterium is achieved by culture and molecular techniques; however, the available methods used to distinguish the As types are costly and time‐consuming. This paper describes the development of a PCR and a restriction enzyme assay for the detection of aAs vapA type V and type VI in ballan wrasse, respectively. Type V‐specific primers were designed on conserved regions of the vapA gene, and the restriction enzyme assay was performed on the PCR products of the hypervariable region of vapA gene for the detection of type VI isolates. Amplification product was produced for type V (254 bp) and restriction bands (368 and 254 bp) for type VI isolates only. In addition, the assays detected type V and type VI isolates in spiked water samples and type V in diagnostic tissue samples. The assays are fast, specific and cost‐effective and can be used as specific diagnostic tools for cleaner fish, to detect infectious divergence strains, and to manage and mitigate aAs disease outbreaks through vaccine development.
DOI Link: 10.1111/jfd.13334
Rights: © 2021 The Authors. Journal of Fish Diseases published by John Wiley & Sons Ltd This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
Licence URL(s): http://creativecommons.org/licenses/by-nc-nd/4.0/

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