Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach
The monogenean ectoparasite, Gyrodactylus salaris Malmberg, 1957, has had a devastating effect on wild Atlantic salmon ( Salmo salar ) since its introduction to Norway in the mid-1970s. In Lake Pålsbufjorden, southern Norway, upstream of the stretches of the River Numedalslågen with anadromous Atlan...
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crcambridgeupr:10.1017/s0031182006001715 2024-06-23T07:48:54+00:00 Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach OLSTAD, K. ROBERTSEN, G. BACHMANN, L. BAKKE, T. A. 2006 http://dx.doi.org/10.1017/s0031182006001715 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182006001715 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 134, issue 4, page 589-597 ISSN 0031-1820 1469-8161 journal-article 2006 crcambridgeupr https://doi.org/10.1017/s0031182006001715 2024-05-29T08:09:31Z The monogenean ectoparasite, Gyrodactylus salaris Malmberg, 1957, has had a devastating effect on wild Atlantic salmon ( Salmo salar ) since its introduction to Norway in the mid-1970s. In Lake Pålsbufjorden, southern Norway, upstream of the stretches of the River Numedalslågen with anadromous Atlantic salmon, a resident Arctic charr ( Salvelinus alpinus ) population has been reported to be infected with G. salaris which is viable in the absence of its normal host, the Atlantic salmon. Currently, there is no record of G. salaris infecting Atlantic salmon in the downstream sections of the River Numedalslågen. We studied experimentally the infectivity and reproductive capacity of G. salaris from Lake Pålsbufjorden on wild and hatchery-reared Atlantic salmon as well as on Arctic charr and rainbow trout ( Oncorhynchus mykiss ). Arctic charr and rainbow trout were moderately susceptible, whereas the Atlantic salmon stocks from River Numedalslågen and River Drammenselva were innately resistant to only slightly susceptible. Thus, the G. salaris from Arctic charr in Lake Pålsbufjorden is considered non-pathogenic to Atlantic salmon. This is the first observation of variation in host preference among Norwegian G. salaris populations. The observed differences in virulence between G. salaris populations could have important consequences for the international legislation and management of Atlantic salmon. Article in Journal/Newspaper Arctic charr Arctic Atlantic salmon Salmo salar Salvelinus alpinus Cambridge University Press Arctic Norway Parasitology 134 4 589 597 |
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Open Polar |
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Cambridge University Press |
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English |
description |
The monogenean ectoparasite, Gyrodactylus salaris Malmberg, 1957, has had a devastating effect on wild Atlantic salmon ( Salmo salar ) since its introduction to Norway in the mid-1970s. In Lake Pålsbufjorden, southern Norway, upstream of the stretches of the River Numedalslågen with anadromous Atlantic salmon, a resident Arctic charr ( Salvelinus alpinus ) population has been reported to be infected with G. salaris which is viable in the absence of its normal host, the Atlantic salmon. Currently, there is no record of G. salaris infecting Atlantic salmon in the downstream sections of the River Numedalslågen. We studied experimentally the infectivity and reproductive capacity of G. salaris from Lake Pålsbufjorden on wild and hatchery-reared Atlantic salmon as well as on Arctic charr and rainbow trout ( Oncorhynchus mykiss ). Arctic charr and rainbow trout were moderately susceptible, whereas the Atlantic salmon stocks from River Numedalslågen and River Drammenselva were innately resistant to only slightly susceptible. Thus, the G. salaris from Arctic charr in Lake Pålsbufjorden is considered non-pathogenic to Atlantic salmon. This is the first observation of variation in host preference among Norwegian G. salaris populations. The observed differences in virulence between G. salaris populations could have important consequences for the international legislation and management of Atlantic salmon. |
format |
Article in Journal/Newspaper |
author |
OLSTAD, K. ROBERTSEN, G. BACHMANN, L. BAKKE, T. A. |
spellingShingle |
OLSTAD, K. ROBERTSEN, G. BACHMANN, L. BAKKE, T. A. Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach |
author_facet |
OLSTAD, K. ROBERTSEN, G. BACHMANN, L. BAKKE, T. A. |
author_sort |
OLSTAD, K. |
title |
Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach |
title_short |
Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach |
title_full |
Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach |
title_fullStr |
Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach |
title_full_unstemmed |
Variation in host preference within Gyrodactylus salaris (Monogenea): an experimental approach |
title_sort |
variation in host preference within gyrodactylus salaris (monogenea): an experimental approach |
publisher |
Cambridge University Press (CUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1017/s0031182006001715 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182006001715 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic Atlantic salmon Salmo salar Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Atlantic salmon Salmo salar Salvelinus alpinus |
op_source |
Parasitology volume 134, issue 4, page 589-597 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182006001715 |
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Parasitology |
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134 |
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4 |
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589 |
op_container_end_page |
597 |
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1802639215404515328 |