Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages
- Identifying where and when parasites occur in farming environments is vital to understand transmission dynamics and develop preventative measures that reduce host-parasite encounters. A major parasite concern for Atlantic salmon farming is Neoparamoeba perurans, a marine amoeba that causes the pot...
Published in: | Aquaculture Environment Interactions |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2356205 https://doi.org/10.3354/aei00137 |
id |
ftimr:oai:imr.brage.unit.no:11250/2356205 |
---|---|
record_format |
openpolar |
spelling |
ftimr:oai:imr.brage.unit.no:11250/2356205 2023-05-15T15:31:23+02:00 Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages Wright, Daniel W. Nowak, Barbara Oppedal, Frode Bridle, Andrew Dempster, Timothy David 2015-10-13T09:14:32Z application/pdf http://hdl.handle.net/11250/2356205 https://doi.org/10.3354/aei00137 eng eng Inter-Research Wright DW, Nowak B, Oppedal F, Bridle A, Dempster T (2015) Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages. Aquacult Environ Interact 7:67-74 urn:issn:1869-7534 http://hdl.handle.net/11250/2356205 https://doi.org/10.3354/aei00137 cristin:1279755 Navngivelse-DelPåSammeVilkår 3.0 Norge http://creativecommons.org/licenses/by-sa/3.0/no/ CC-BY-SA 67-74 7 Aquaculture environment interactions 1 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Parasitology: 484 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Journal article Peer reviewed 2015 ftimr https://doi.org/10.3354/aei00137 2021-09-23T20:16:16Z - Identifying where and when parasites occur in farming environments is vital to understand transmission dynamics and develop preventative measures that reduce host-parasite encounters. A major parasite concern for Atlantic salmon farming is Neoparamoeba perurans, a marine amoeba that causes the potentially fatal amoebic gill disease (AGD), for which few control options exist. We explored whether free-living N. perurans abundance differs among depths in commercial Atlantic salmon Salmo salar sea-cages. Water samples collected from the surface to 10 m depth at multiple cage sites and times, and subsequently subjected to qPCR analysis, revealed that N. perurans abundance was influenced by depth at the time of year when amoeba numbers were highest, with more amoebae in surface waters. No distinct depth patterns were observed when amoebae were in low abundance. Across all times, temperature and salinity were largely homogeneous throughout cage depths. Possible factors explaining the presence of amoebae at the surface are discussed. Our results suggest that excluding caged salmon from upper cage depths where N. perurans is more abundant could be an effective management strategy to reduce the speed at which initial infections occur and delay the development of AGD outbreaks. Article in Journal/Newspaper Atlantic salmon Salmo salar Institute for Marine Research: Brage IMR Aquaculture Environment Interactions 7 1 67 74 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Parasitology: 484 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Parasitology: 484 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 Wright, Daniel W. Nowak, Barbara Oppedal, Frode Bridle, Andrew Dempster, Timothy David Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Parasitology: 484 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 |
description |
- Identifying where and when parasites occur in farming environments is vital to understand transmission dynamics and develop preventative measures that reduce host-parasite encounters. A major parasite concern for Atlantic salmon farming is Neoparamoeba perurans, a marine amoeba that causes the potentially fatal amoebic gill disease (AGD), for which few control options exist. We explored whether free-living N. perurans abundance differs among depths in commercial Atlantic salmon Salmo salar sea-cages. Water samples collected from the surface to 10 m depth at multiple cage sites and times, and subsequently subjected to qPCR analysis, revealed that N. perurans abundance was influenced by depth at the time of year when amoeba numbers were highest, with more amoebae in surface waters. No distinct depth patterns were observed when amoebae were in low abundance. Across all times, temperature and salinity were largely homogeneous throughout cage depths. Possible factors explaining the presence of amoebae at the surface are discussed. Our results suggest that excluding caged salmon from upper cage depths where N. perurans is more abundant could be an effective management strategy to reduce the speed at which initial infections occur and delay the development of AGD outbreaks. |
format |
Article in Journal/Newspaper |
author |
Wright, Daniel W. Nowak, Barbara Oppedal, Frode Bridle, Andrew Dempster, Timothy David |
author_facet |
Wright, Daniel W. Nowak, Barbara Oppedal, Frode Bridle, Andrew Dempster, Timothy David |
author_sort |
Wright, Daniel W. |
title |
Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages |
title_short |
Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages |
title_full |
Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages |
title_fullStr |
Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages |
title_full_unstemmed |
Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages |
title_sort |
depth distribution of the amoebic gill disease agent, neoparamoeba perurans, in salmon sea-cages |
publisher |
Inter-Research |
publishDate |
2015 |
url |
http://hdl.handle.net/11250/2356205 https://doi.org/10.3354/aei00137 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
67-74 7 Aquaculture environment interactions 1 |
op_relation |
Wright DW, Nowak B, Oppedal F, Bridle A, Dempster T (2015) Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages. Aquacult Environ Interact 7:67-74 urn:issn:1869-7534 http://hdl.handle.net/11250/2356205 https://doi.org/10.3354/aei00137 cristin:1279755 |
op_rights |
Navngivelse-DelPåSammeVilkår 3.0 Norge http://creativecommons.org/licenses/by-sa/3.0/no/ |
op_rightsnorm |
CC-BY-SA |
op_doi |
https://doi.org/10.3354/aei00137 |
container_title |
Aquaculture Environment Interactions |
container_volume |
7 |
container_issue |
1 |
container_start_page |
67 |
op_container_end_page |
74 |
_version_ |
1766361886838751232 |