Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar)
Abstract Background Parvicapsula pseudobranchicola (Myxozoa) causes widespread infections in farmed Atlantic salmon in northern Norway. Heavily infected salmon become runts, probably due to vision impairment or blindness. The salmon are likely infected by waterborne actinospores, released by an alte...
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ftdoajarticles:oai:doaj.org/article:f597602754a54686b497854ef9d4299c 2023-07-02T03:30:55+02:00 Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) Haakon Hansen Trygve T Poppe Turhan Markussen Egil Karlsbakk 2015-04-01T00:00:00Z https://doi.org/10.1186/s13071-015-0828-z https://doaj.org/article/f597602754a54686b497854ef9d4299c EN eng BMC https://doi.org/10.1186/s13071-015-0828-z https://doaj.org/toc/1756-3305 doi:10.1186/s13071-015-0828-z 1756-3305 https://doaj.org/article/f597602754a54686b497854ef9d4299c Parasites & Vectors, Vol 8, Iss 1, Pp 1-4 (2015) Natural host Life-cycle Salmonids Marine Parasites Parvicapsulidae Norway Infectious and parasitic diseases RC109-216 article 2015 ftdoajarticles https://doi.org/10.1186/s13071-015-0828-z 2023-06-11T00:37:46Z Abstract Background Parvicapsula pseudobranchicola (Myxozoa) causes widespread infections in farmed Atlantic salmon in northern Norway. Heavily infected salmon become runts, probably due to vision impairment or blindness. The salmon are likely infected by waterborne actinospores, released by an alternating annelid host, but the life cycle of P. pseudobranchicola is unknown. Seatrout and Arctic charr have been considered possible hosts for the parasite, but firm evidence has been lacking. Findings We show for the first time the presence of mature spores of P. pseudobranchicola in seatrout. The seatrout were infected with high intensities of P. pseudobranchicola in the pseudobranchs in early April. The presence of mature spores in early spring suggests that the fish had been infected late the previous year, a pattern of infection similar to that observed for farmed salmon stocked in autumn. Although heavily infected, the fish did not display any symptoms consistent with parvicapsulosis. The results suggest that the life cycle of P. pseudobranchicola is more adapted to seatrout, rather than to Atlantic salmon. Conclusions The presence of mature spores of P. pseudobranchicola in seatrout confirms that seatrout is a natural host for this myxosporean and this is also the first record of these spores in the pseudobranch of a wild salmonid. Furthermore, wild trout from non-farming areas may become heavily infected with P. pseudobranchicola, developing pseudobranch pathology resembling that of farmed Atlantic salmon suffering from parvicapsulosis. Article in Journal/Newspaper Arctic charr Arctic Atlantic salmon Northern Norway Salmo salar Directory of Open Access Journals: DOAJ Articles Arctic Norway Parasites & Vectors 8 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Natural host Life-cycle Salmonids Marine Parasites Parvicapsulidae Norway Infectious and parasitic diseases RC109-216 |
spellingShingle |
Natural host Life-cycle Salmonids Marine Parasites Parvicapsulidae Norway Infectious and parasitic diseases RC109-216 Haakon Hansen Trygve T Poppe Turhan Markussen Egil Karlsbakk Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) |
topic_facet |
Natural host Life-cycle Salmonids Marine Parasites Parvicapsulidae Norway Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Parvicapsula pseudobranchicola (Myxozoa) causes widespread infections in farmed Atlantic salmon in northern Norway. Heavily infected salmon become runts, probably due to vision impairment or blindness. The salmon are likely infected by waterborne actinospores, released by an alternating annelid host, but the life cycle of P. pseudobranchicola is unknown. Seatrout and Arctic charr have been considered possible hosts for the parasite, but firm evidence has been lacking. Findings We show for the first time the presence of mature spores of P. pseudobranchicola in seatrout. The seatrout were infected with high intensities of P. pseudobranchicola in the pseudobranchs in early April. The presence of mature spores in early spring suggests that the fish had been infected late the previous year, a pattern of infection similar to that observed for farmed salmon stocked in autumn. Although heavily infected, the fish did not display any symptoms consistent with parvicapsulosis. The results suggest that the life cycle of P. pseudobranchicola is more adapted to seatrout, rather than to Atlantic salmon. Conclusions The presence of mature spores of P. pseudobranchicola in seatrout confirms that seatrout is a natural host for this myxosporean and this is also the first record of these spores in the pseudobranch of a wild salmonid. Furthermore, wild trout from non-farming areas may become heavily infected with P. pseudobranchicola, developing pseudobranch pathology resembling that of farmed Atlantic salmon suffering from parvicapsulosis. |
format |
Article in Journal/Newspaper |
author |
Haakon Hansen Trygve T Poppe Turhan Markussen Egil Karlsbakk |
author_facet |
Haakon Hansen Trygve T Poppe Turhan Markussen Egil Karlsbakk |
author_sort |
Haakon Hansen |
title |
Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) |
title_short |
Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) |
title_full |
Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) |
title_fullStr |
Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Seatrout (Salmo trutta) is a natural host for Parvicapsula pseudobranchicola (Myxozoa, Myxosporea), an important pathogen of farmed Atlantic salmon (Salmo salar) |
title_sort |
seatrout (salmo trutta) is a natural host for parvicapsula pseudobranchicola (myxozoa, myxosporea), an important pathogen of farmed atlantic salmon (salmo salar) |
publisher |
BMC |
publishDate |
2015 |
url |
https://doi.org/10.1186/s13071-015-0828-z https://doaj.org/article/f597602754a54686b497854ef9d4299c |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic Atlantic salmon Northern Norway Salmo salar |
genre_facet |
Arctic charr Arctic Atlantic salmon Northern Norway Salmo salar |
op_source |
Parasites & Vectors, Vol 8, Iss 1, Pp 1-4 (2015) |
op_relation |
https://doi.org/10.1186/s13071-015-0828-z https://doaj.org/toc/1756-3305 doi:10.1186/s13071-015-0828-z 1756-3305 https://doaj.org/article/f597602754a54686b497854ef9d4299c |
op_doi |
https://doi.org/10.1186/s13071-015-0828-z |
container_title |
Parasites & Vectors |
container_volume |
8 |
container_issue |
1 |
_version_ |
1770275196562833408 |