Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers
Abstract European populations of the freshwater pearl mussel ( FPM , Margaritifera margaritifera ) have collapsed across much of the species’ geographic range and, despite many types of conservation intervention, the number of successful restoration efforts has been low. The goal of this study was t...
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crwiley:10.1111/fwb.12947 2024-09-15T17:56:00+00:00 Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers Salonen, Jouni K. Luhta, Pirkko‐Liisa Moilanen, Eero Oulasvirta, Panu Turunen, Jarno Taskinen, Jouni Maj ja Tor Nesslingin Säätiö 2017 http://dx.doi.org/10.1111/fwb.12947 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12947 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12947 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Freshwater Biology volume 62, issue 8, page 1346-1358 ISSN 0046-5070 1365-2427 journal-article 2017 crwiley https://doi.org/10.1111/fwb.12947 2024-08-20T04:13:23Z Abstract European populations of the freshwater pearl mussel ( FPM , Margaritifera margaritifera ) have collapsed across much of the species’ geographic range and, despite many types of conservation intervention, the number of successful restoration efforts has been low. The goal of this study was to determine whether there were population‐specific differences in the suitability of Atlantic salmon ( Salmo salar ) and brown trout ( S. trutta ) as hosts for the parasitic glochidium larvae of FPM . We predicted that such differences would depend on the historical occurrence of these salmonid species in FPM habitats. We studied the potential host specificity both in the field and in laboratory by exposing salmonid fish to FPM glochidia originating from nine populations in different types of streams and rivers within three large river basins in northern Fennoscandia. The exposures showed remarkable population‐specific differences in the suitability of host species. In large main channels, previously colonised by Atlantic salmon but mostly now dammed for hydropower production, the occurrence of FPM glochidia was always highest on salmon. Moreover, glochidia on salmon were often larger than the conspecifics on brown trout. Conversely, in small tributaries with no salmon history, brown trout was generally the best, or the only suitable, host for FPM . The adaptation of certain FPM populations to salmon is a highly significant finding, which offers — together with the hydropower dam construction and the salmonid stocking practices that often favour brown trout — an explanation for the collapse of FPM populations living in former Atlantic salmon rivers. This study illustrates the indirect but substantial effects that dams and changes in fish communities may induce, and emphasises the need to determine the most suitable host species for each FPM population in order to inform conservation and management actions. Article in Journal/Newspaper Atlantic salmon Fennoscandia Fennoscandian Salmo salar Wiley Online Library Freshwater Biology 62 8 1346 1358 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract European populations of the freshwater pearl mussel ( FPM , Margaritifera margaritifera ) have collapsed across much of the species’ geographic range and, despite many types of conservation intervention, the number of successful restoration efforts has been low. The goal of this study was to determine whether there were population‐specific differences in the suitability of Atlantic salmon ( Salmo salar ) and brown trout ( S. trutta ) as hosts for the parasitic glochidium larvae of FPM . We predicted that such differences would depend on the historical occurrence of these salmonid species in FPM habitats. We studied the potential host specificity both in the field and in laboratory by exposing salmonid fish to FPM glochidia originating from nine populations in different types of streams and rivers within three large river basins in northern Fennoscandia. The exposures showed remarkable population‐specific differences in the suitability of host species. In large main channels, previously colonised by Atlantic salmon but mostly now dammed for hydropower production, the occurrence of FPM glochidia was always highest on salmon. Moreover, glochidia on salmon were often larger than the conspecifics on brown trout. Conversely, in small tributaries with no salmon history, brown trout was generally the best, or the only suitable, host for FPM . The adaptation of certain FPM populations to salmon is a highly significant finding, which offers — together with the hydropower dam construction and the salmonid stocking practices that often favour brown trout — an explanation for the collapse of FPM populations living in former Atlantic salmon rivers. This study illustrates the indirect but substantial effects that dams and changes in fish communities may induce, and emphasises the need to determine the most suitable host species for each FPM population in order to inform conservation and management actions. |
author2 |
Maj ja Tor Nesslingin Säätiö |
format |
Article in Journal/Newspaper |
author |
Salonen, Jouni K. Luhta, Pirkko‐Liisa Moilanen, Eero Oulasvirta, Panu Turunen, Jarno Taskinen, Jouni |
spellingShingle |
Salonen, Jouni K. Luhta, Pirkko‐Liisa Moilanen, Eero Oulasvirta, Panu Turunen, Jarno Taskinen, Jouni Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers |
author_facet |
Salonen, Jouni K. Luhta, Pirkko‐Liisa Moilanen, Eero Oulasvirta, Panu Turunen, Jarno Taskinen, Jouni |
author_sort |
Salonen, Jouni K. |
title |
Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers |
title_short |
Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers |
title_full |
Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers |
title_fullStr |
Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers |
title_full_unstemmed |
Atlantic salmon ( Salmo salar) and brown trout ( Salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( Margaritifera margaritifera) in northern Fennoscandian rivers |
title_sort |
atlantic salmon ( salmo salar) and brown trout ( salmo trutta) differ in their suitability as hosts for the endangered freshwater pearl mussel ( margaritifera margaritifera) in northern fennoscandian rivers |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/fwb.12947 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffwb.12947 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fwb.12947 |
genre |
Atlantic salmon Fennoscandia Fennoscandian Salmo salar |
genre_facet |
Atlantic salmon Fennoscandia Fennoscandian Salmo salar |
op_source |
Freshwater Biology volume 62, issue 8, page 1346-1358 ISSN 0046-5070 1365-2427 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fwb.12947 |
container_title |
Freshwater Biology |
container_volume |
62 |
container_issue |
8 |
container_start_page |
1346 |
op_container_end_page |
1358 |
_version_ |
1810432212503363584 |