Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions
Chloramine-T (Cl-T) is a disinfectant and sanitizer widely applied to treat bacterial infections on the gill and skin of Atlantic salmon during freshwater culture. It is typically applied as static or flush treatments during periods of disease risk or in response to pathogen detection or gross disea...
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ftunivtasecite:oai:ecite.utas.edu.au:146939 2023-05-15T15:30:50+02:00 Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions Quezada-Rodriguez, PR Taylor, RS Samsing, F Rigby, M Wood, AT Nowak, BF Wynne, JW 2022 https://doi.org/10.1016/j.aquaculture.2021.737319 http://ecite.utas.edu.au/146939 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.aquaculture.2021.737319 Quezada-Rodriguez, PR and Taylor, RS and Samsing, F and Rigby, M and Wood, AT and Nowak, BF and Wynne, JW, Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions, Aquaculture, 546 Article 737319. ISSN 0044-8486 (2022) [Refereed Article] http://ecite.utas.edu.au/146939 Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture Refereed Article PeerReviewed 2022 ftunivtasecite https://doi.org/10.1016/j.aquaculture.2021.737319 2022-11-28T23:17:09Z Chloramine-T (Cl-T) is a disinfectant and sanitizer widely applied to treat bacterial infections on the gill and skin of Atlantic salmon during freshwater culture. It is typically applied as static or flush treatments during periods of disease risk or in response to pathogen detection or gross disease signs. While the efficacy of CI-T to reduce specific bacterial pathogens has been demonstrated previously, its effect on the broader commensal microbial community is largely unknown. To address this knowledge gap, the present study examined the effects of a one-hour Cl-T treatment (nominal 15mgL −1 ) on the skin and gill microbiome using a 16S rRNA based amplicon sequencing approach. Furthermore, the total bacterial load and histological changes in the gill were examined following CI-T treatment. Although, bacterial quantification on gills and water confirmed decreased bacterial load at 1h, these loads returned to pre-treatment levels by 24h. Microbial richness of bacterial communities on skin and gills varied at 1h, and 13d compared to 0h. Contrary to the gills, microbial diversity on skin decreased after treatment. Gill histology showed subepithelial oedema at 24h and increased number of lamellar mucous cells at 7d compared with 0h. This study reports the effects of commercially deployed Cl-T on two gill health indicators: bacterial microbiome composition and gill morphology in fresh water farmed Atlantic salmon. Article in Journal/Newspaper Atlantic salmon Salmo salar eCite UTAS (University of Tasmania) Aquaculture 546 737319 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture |
spellingShingle |
Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture Quezada-Rodriguez, PR Taylor, RS Samsing, F Rigby, M Wood, AT Nowak, BF Wynne, JW Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions |
topic_facet |
Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture |
description |
Chloramine-T (Cl-T) is a disinfectant and sanitizer widely applied to treat bacterial infections on the gill and skin of Atlantic salmon during freshwater culture. It is typically applied as static or flush treatments during periods of disease risk or in response to pathogen detection or gross disease signs. While the efficacy of CI-T to reduce specific bacterial pathogens has been demonstrated previously, its effect on the broader commensal microbial community is largely unknown. To address this knowledge gap, the present study examined the effects of a one-hour Cl-T treatment (nominal 15mgL −1 ) on the skin and gill microbiome using a 16S rRNA based amplicon sequencing approach. Furthermore, the total bacterial load and histological changes in the gill were examined following CI-T treatment. Although, bacterial quantification on gills and water confirmed decreased bacterial load at 1h, these loads returned to pre-treatment levels by 24h. Microbial richness of bacterial communities on skin and gills varied at 1h, and 13d compared to 0h. Contrary to the gills, microbial diversity on skin decreased after treatment. Gill histology showed subepithelial oedema at 24h and increased number of lamellar mucous cells at 7d compared with 0h. This study reports the effects of commercially deployed Cl-T on two gill health indicators: bacterial microbiome composition and gill morphology in fresh water farmed Atlantic salmon. |
format |
Article in Journal/Newspaper |
author |
Quezada-Rodriguez, PR Taylor, RS Samsing, F Rigby, M Wood, AT Nowak, BF Wynne, JW |
author_facet |
Quezada-Rodriguez, PR Taylor, RS Samsing, F Rigby, M Wood, AT Nowak, BF Wynne, JW |
author_sort |
Quezada-Rodriguez, PR |
title |
Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions |
title_short |
Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions |
title_full |
Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions |
title_fullStr |
Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions |
title_full_unstemmed |
Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions |
title_sort |
effect of a prophylactic treatment with chloramine-t on gill histology and microbiome of atlantic salmon ( salmo salar ) under commercial conditions |
publisher |
Elsevier Science Bv |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.aquaculture.2021.737319 http://ecite.utas.edu.au/146939 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://dx.doi.org/10.1016/j.aquaculture.2021.737319 Quezada-Rodriguez, PR and Taylor, RS and Samsing, F and Rigby, M and Wood, AT and Nowak, BF and Wynne, JW, Effect of a prophylactic treatment with chloramine-T on gill histology and microbiome of Atlantic salmon ( Salmo salar ) under commercial conditions, Aquaculture, 546 Article 737319. ISSN 0044-8486 (2022) [Refereed Article] http://ecite.utas.edu.au/146939 |
op_doi |
https://doi.org/10.1016/j.aquaculture.2021.737319 |
container_title |
Aquaculture |
container_volume |
546 |
container_start_page |
737319 |
_version_ |
1766361307510996992 |