The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris
Abstract – In 2000, the Atlantic salmon ( Salmo salar L.) stock in the river Signaldalselva, North Norway was found to be infected with the monogenean Gyrodactylus salaris (Malmberg). This river system has a multispecies fish community of nine species in total. Low densities of Atlantic salmon parr...
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crwiley:10.1111/j.1600-0633.2006.00184.x 2023-12-03T10:15:24+01:00 The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris Knudsen, R. Adolfsen, P. Sandring, S. Kristoffersen, R. Siikavuopio, S. Rikardsen, A. 2006 http://dx.doi.org/10.1111/j.1600-0633.2006.00184.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2006.00184.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2006.00184.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 16, issue 1, page 99-104 ISSN 0906-6691 1600-0633 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2006 crwiley https://doi.org/10.1111/j.1600-0633.2006.00184.x 2023-11-09T13:37:15Z Abstract – In 2000, the Atlantic salmon ( Salmo salar L.) stock in the river Signaldalselva, North Norway was found to be infected with the monogenean Gyrodactylus salaris (Malmberg). This river system has a multispecies fish community of nine species in total. Low densities of Atlantic salmon parr were found during electrofishing in October (2003) with a prevalence of 94% and a mean abundance of 848 G. salaris. This watercourse also holds a riverine stock of anadromous Arctic charr ( Salvelinus alpinus ), which is not common in Norway. Among the parr of Arctic charr, 64% were infested with an abundance of 23 parasites per fish. The most heavily infected 0+ and 1+ juvenile Arctic charr had 469 and 534 parasites, respectively, indicating that the parasites are able to reproduce on Arctic charr in the wild. There was little variation in the rates of infestation of Arctic charr along the studied stretch of the river, even in areas with very low densities of Atlantic salmon parr. The parr of anadromous Arctic charr seem to be suitable as long‐term hosts for G. salaris . Moreover, a few (22%) infested adult sea‐running Arctic charr were captured after ascending the river in the autumn, which shows that large fish may also act as carriers of G. salaris . However, no parasites were recorded on potential anadromous Arctic charr before descending during early spring (April 2003 and April 2004). Thus, it is still not clear whether anadromous Arctic charr are able to disperse the parasite between watercourses. So far, it is uncertain whether G. salaris may increase the mortality rates of Arctic charr and thereby be a threat to these unusual occurring riverine anadromous Arctic charr stocks. Article in Journal/Newspaper Arctic charr Arctic Atlantic salmon North Norway Salmo salar Salvelinus alpinus Wiley Online Library (via Crossref) Arctic Norway Ecology of Freshwater Fish 16 1 99 104 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Knudsen, R. Adolfsen, P. Sandring, S. Kristoffersen, R. Siikavuopio, S. Rikardsen, A. The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract – In 2000, the Atlantic salmon ( Salmo salar L.) stock in the river Signaldalselva, North Norway was found to be infected with the monogenean Gyrodactylus salaris (Malmberg). This river system has a multispecies fish community of nine species in total. Low densities of Atlantic salmon parr were found during electrofishing in October (2003) with a prevalence of 94% and a mean abundance of 848 G. salaris. This watercourse also holds a riverine stock of anadromous Arctic charr ( Salvelinus alpinus ), which is not common in Norway. Among the parr of Arctic charr, 64% were infested with an abundance of 23 parasites per fish. The most heavily infected 0+ and 1+ juvenile Arctic charr had 469 and 534 parasites, respectively, indicating that the parasites are able to reproduce on Arctic charr in the wild. There was little variation in the rates of infestation of Arctic charr along the studied stretch of the river, even in areas with very low densities of Atlantic salmon parr. The parr of anadromous Arctic charr seem to be suitable as long‐term hosts for G. salaris . Moreover, a few (22%) infested adult sea‐running Arctic charr were captured after ascending the river in the autumn, which shows that large fish may also act as carriers of G. salaris . However, no parasites were recorded on potential anadromous Arctic charr before descending during early spring (April 2003 and April 2004). Thus, it is still not clear whether anadromous Arctic charr are able to disperse the parasite between watercourses. So far, it is uncertain whether G. salaris may increase the mortality rates of Arctic charr and thereby be a threat to these unusual occurring riverine anadromous Arctic charr stocks. |
format |
Article in Journal/Newspaper |
author |
Knudsen, R. Adolfsen, P. Sandring, S. Kristoffersen, R. Siikavuopio, S. Rikardsen, A. |
author_facet |
Knudsen, R. Adolfsen, P. Sandring, S. Kristoffersen, R. Siikavuopio, S. Rikardsen, A. |
author_sort |
Knudsen, R. |
title |
The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris |
title_short |
The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris |
title_full |
The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris |
title_fullStr |
The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris |
title_full_unstemmed |
The suitability of anadromous Arctic charr as host and vector of the monogenean Gyrodactylus salaris |
title_sort |
suitability of anadromous arctic charr as host and vector of the monogenean gyrodactylus salaris |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1600-0633.2006.00184.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2006.00184.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2006.00184.x |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic Atlantic salmon North Norway Salmo salar Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Atlantic salmon North Norway Salmo salar Salvelinus alpinus |
op_source |
Ecology of Freshwater Fish volume 16, issue 1, page 99-104 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0633.2006.00184.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
16 |
container_issue |
1 |
container_start_page |
99 |
op_container_end_page |
104 |
_version_ |
1784262315507449856 |