Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS)
The River Vuoksi is the largest Finnish-Russian cross-border river connecting Lake Saimaa in Finland and Lake Ladoga in Russia. The valuable salmonid populations in the river were abundant and healthy still a hundred years ago, enabling also recreational and professional fisheries. The populations,...
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ftluke:oai:jukuri.luke.fi:10024/552220 2023-10-09T21:55:43+02:00 Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) Koljonen, Marja-Liisa Tanhuanpää, Pirjo Vähänäkki, Pekka Leinonen, Tuomas Peuhkuri, Nina Vehanen, Teppo orcid:0000-0002-6177-9447 orcid:0000-0001-7431-975X orcid:0000-0002-3328-229X orcid:0000-0002-0301-282X 4100210310 4100610210 4100111210 Luonnonvarakeskus 47 p. true https://jukuri.luke.fi/handle/10024/552220 en eng Natural Resources Institute Finland (Luke) Natural resources and bioeconomy studies 2342-7647 77/2022 978-952-380-508-8 https://jukuri.luke.fi/handle/10024/552220 URN:ISBN:978-952-380-508-8 Salmonidae populations genetic variation biodiversity sustainable use publication fi=D4 Julkaistu kehittämis- tai tutkimusraportti taikka selvitys|sv=D4 Publicerad utvecklings eller forskningsrapport eller -utredning|en=D4 Published development or research report or study| ftluke 2023-09-12T20:28:23Z The River Vuoksi is the largest Finnish-Russian cross-border river connecting Lake Saimaa in Finland and Lake Ladoga in Russia. The valuable salmonid populations in the river were abundant and healthy still a hundred years ago, enabling also recreational and professional fisheries. The populations, however, started to decline due to human influence such as construction of hydropower plants (HPPs) that obstructed free migration of the fish, dredging of rapids that had been important salmonid breeding and nursery areas, and deterioration of the quality of water by industry. The water quality has during the past decades improved and does not prevent salmonid reproduction anymore. However, the four HPPs in the river still hinder fish migration. In addition, most of the historical salmonid reproduction areas are still non-existent, although the restoration actions carried out have gradually started to improve the situation. However, the short-term river flow regulation and hydropeaking for hydropower production risk salmonid reproduction also in the restored areas. Stocking of hatchery fish has been conducted on the Finnish side, but mainly for the fisheries purposes. Currently, the Lake Saimaa landlocked salmon (Salmo salar m. sebago), that is known to have migrated downstream from the lake to breed in the River Vuoksi above Imatrankoski, is critically endangered, and the Lake Ladoga salmon is endangered. Prior to the construction of the HPPs, the Lake Ladoga salmon migrated from the lake to breed, e.g., in rapids as far as right below Imatrankoski. Natural reproduction of brown trout (Salmo trutta) is also very scarce in the River Vuoksi, especially on the Finnish side, and not much is known of European grayling (Thymallus thymallus) populations existing in the main stream and tributaries. In this study, we aimed at gaining more understanding of the genetic characteristics of the River Vuoksi salmonids, and possible genetic differentiation of the populations. This information would be important for any conservation ... Report Salmo salar Natural Resources Institute Finland: Jukuri Rus’ ENVELOPE(155.950,155.950,54.200,54.200) |
institution |
Open Polar |
collection |
Natural Resources Institute Finland: Jukuri |
op_collection_id |
ftluke |
language |
English |
topic |
Salmonidae populations genetic variation biodiversity sustainable use |
spellingShingle |
Salmonidae populations genetic variation biodiversity sustainable use Koljonen, Marja-Liisa Tanhuanpää, Pirjo Vähänäkki, Pekka Leinonen, Tuomas Peuhkuri, Nina Vehanen, Teppo Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) |
topic_facet |
Salmonidae populations genetic variation biodiversity sustainable use |
description |
The River Vuoksi is the largest Finnish-Russian cross-border river connecting Lake Saimaa in Finland and Lake Ladoga in Russia. The valuable salmonid populations in the river were abundant and healthy still a hundred years ago, enabling also recreational and professional fisheries. The populations, however, started to decline due to human influence such as construction of hydropower plants (HPPs) that obstructed free migration of the fish, dredging of rapids that had been important salmonid breeding and nursery areas, and deterioration of the quality of water by industry. The water quality has during the past decades improved and does not prevent salmonid reproduction anymore. However, the four HPPs in the river still hinder fish migration. In addition, most of the historical salmonid reproduction areas are still non-existent, although the restoration actions carried out have gradually started to improve the situation. However, the short-term river flow regulation and hydropeaking for hydropower production risk salmonid reproduction also in the restored areas. Stocking of hatchery fish has been conducted on the Finnish side, but mainly for the fisheries purposes. Currently, the Lake Saimaa landlocked salmon (Salmo salar m. sebago), that is known to have migrated downstream from the lake to breed in the River Vuoksi above Imatrankoski, is critically endangered, and the Lake Ladoga salmon is endangered. Prior to the construction of the HPPs, the Lake Ladoga salmon migrated from the lake to breed, e.g., in rapids as far as right below Imatrankoski. Natural reproduction of brown trout (Salmo trutta) is also very scarce in the River Vuoksi, especially on the Finnish side, and not much is known of European grayling (Thymallus thymallus) populations existing in the main stream and tributaries. In this study, we aimed at gaining more understanding of the genetic characteristics of the River Vuoksi salmonids, and possible genetic differentiation of the populations. This information would be important for any conservation ... |
author2 |
orcid:0000-0002-6177-9447 orcid:0000-0001-7431-975X orcid:0000-0002-3328-229X orcid:0000-0002-0301-282X 4100210310 4100610210 4100111210 Luonnonvarakeskus |
format |
Report |
author |
Koljonen, Marja-Liisa Tanhuanpää, Pirjo Vähänäkki, Pekka Leinonen, Tuomas Peuhkuri, Nina Vehanen, Teppo |
author_facet |
Koljonen, Marja-Liisa Tanhuanpää, Pirjo Vähänäkki, Pekka Leinonen, Tuomas Peuhkuri, Nina Vehanen, Teppo |
author_sort |
Koljonen, Marja-Liisa |
title |
Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) |
title_short |
Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) |
title_full |
Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) |
title_fullStr |
Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) |
title_full_unstemmed |
Genetic structure of landlocked salmon, brown trout and European grayling in the River Vuoksi catchment (FIN-RUS) |
title_sort |
genetic structure of landlocked salmon, brown trout and european grayling in the river vuoksi catchment (fin-rus) |
publisher |
Natural Resources Institute Finland (Luke) |
url |
https://jukuri.luke.fi/handle/10024/552220 |
long_lat |
ENVELOPE(155.950,155.950,54.200,54.200) |
geographic |
Rus’ |
geographic_facet |
Rus’ |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
Natural resources and bioeconomy studies 2342-7647 77/2022 978-952-380-508-8 https://jukuri.luke.fi/handle/10024/552220 URN:ISBN:978-952-380-508-8 |
_version_ |
1779319725879197696 |