Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates
Abstract Early reports accounted for two main genotypes of Piscirickettsia salmonis , a fish pathogen and causative agent of piscirickettsiosis, placing the single isolate EM ‐90 apart from the prototypic LF ‐89 and related isolates. In this study, we provide evidence that, contrary to what has been...
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crwiley:10.1111/jfd.12581 2024-06-23T07:51:23+00:00 Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates Saavedra, J Hernandez, N Osses, A Castillo, A Cancino, A Grothusen, H Navas, E Henriquez, P Bohle, H Bustamante, F Bustos, P Mancilla, M Corporación de Fomento de la Producción 2017 http://dx.doi.org/10.1111/jfd.12581 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12581 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12581 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Journal of Fish Diseases volume 40, issue 8, page 1055-1063 ISSN 0140-7775 1365-2761 journal-article 2017 crwiley https://doi.org/10.1111/jfd.12581 2024-06-11T04:43:05Z Abstract Early reports accounted for two main genotypes of Piscirickettsia salmonis , a fish pathogen and causative agent of piscirickettsiosis, placing the single isolate EM ‐90 apart from the prototypic LF ‐89 and related isolates. In this study, we provide evidence that, contrary to what has been supposed, the EM ‐90‐like isolates are highly prevalent and disseminated across Chilean marine farms. Molecular analysis of 507 P. salmonis field isolates derived from main rearing areas, diverse hosts and collected over 6 years, revealed that nearly 50% of the entire collection were indeed typed as EM ‐90‐like. Interestingly, these isolates showed a marked host preference, being recovered exclusively from Atlantic salmon ( Salmo salar ) samples. Although both strains produce undistinguishable pathological outcomes, differences regarding growth kinetics and susceptibility to the antibiotics and bactericidal action of serum could be identified. In sum, our results allow to conclude that the EM ‐90‐like isolates represent an epidemiologically relevant group in the current situation of piscirickettsiosis. Based on the consistency between genotype and phenotype exhibited by this strain, we point out the need for genotypic studies that may be as important for the Chilean salmon industry as the continuous surveillance of antimicrobial susceptibility patterns. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Diseases 40 8 1055 1063 |
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Wiley Online Library |
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English |
description |
Abstract Early reports accounted for two main genotypes of Piscirickettsia salmonis , a fish pathogen and causative agent of piscirickettsiosis, placing the single isolate EM ‐90 apart from the prototypic LF ‐89 and related isolates. In this study, we provide evidence that, contrary to what has been supposed, the EM ‐90‐like isolates are highly prevalent and disseminated across Chilean marine farms. Molecular analysis of 507 P. salmonis field isolates derived from main rearing areas, diverse hosts and collected over 6 years, revealed that nearly 50% of the entire collection were indeed typed as EM ‐90‐like. Interestingly, these isolates showed a marked host preference, being recovered exclusively from Atlantic salmon ( Salmo salar ) samples. Although both strains produce undistinguishable pathological outcomes, differences regarding growth kinetics and susceptibility to the antibiotics and bactericidal action of serum could be identified. In sum, our results allow to conclude that the EM ‐90‐like isolates represent an epidemiologically relevant group in the current situation of piscirickettsiosis. Based on the consistency between genotype and phenotype exhibited by this strain, we point out the need for genotypic studies that may be as important for the Chilean salmon industry as the continuous surveillance of antimicrobial susceptibility patterns. |
author2 |
Corporación de Fomento de la Producción |
format |
Article in Journal/Newspaper |
author |
Saavedra, J Hernandez, N Osses, A Castillo, A Cancino, A Grothusen, H Navas, E Henriquez, P Bohle, H Bustamante, F Bustos, P Mancilla, M |
spellingShingle |
Saavedra, J Hernandez, N Osses, A Castillo, A Cancino, A Grothusen, H Navas, E Henriquez, P Bohle, H Bustamante, F Bustos, P Mancilla, M Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates |
author_facet |
Saavedra, J Hernandez, N Osses, A Castillo, A Cancino, A Grothusen, H Navas, E Henriquez, P Bohle, H Bustamante, F Bustos, P Mancilla, M |
author_sort |
Saavedra, J |
title |
Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates |
title_short |
Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates |
title_full |
Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates |
title_fullStr |
Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates |
title_full_unstemmed |
Prevalence, geographic distribution and phenotypic differences of Piscirickettsia salmonis EM‐90‐like isolates |
title_sort |
prevalence, geographic distribution and phenotypic differences of piscirickettsia salmonis em‐90‐like isolates |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/jfd.12581 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12581 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12581 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Diseases volume 40, issue 8, page 1055-1063 ISSN 0140-7775 1365-2761 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1111/jfd.12581 |
container_title |
Journal of Fish Diseases |
container_volume |
40 |
container_issue |
8 |
container_start_page |
1055 |
op_container_end_page |
1063 |
_version_ |
1802642471975387136 |