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Water and genes flow between the two largest Baltic salmon rivers

Credit: Ville Vähä
Salmon from upstream reaches of the two northernmost Baltic rivers are different from downstream salmon. A recent study found that upstream salmon from the large Tornio and Kalix Rivers in Finland and Sweden are genetically distinct and migrate at different times and ages than their downstream counterparts. However, there seems to be no such distinction between salmon from these two neighbouring rivers.
Traffic is busy below the surface of the Baltic Sea and rivers flowing into it. Starting in early summer, mature salmon migrate from the sea into their home rivers to spawn. The study by the University of Helsinki, Natural Resources Institute Finland (Luke) and Swedish University of Agricultural Sciences (SLU) found that salmon destined to spawn far upstream entered the Tornio (Torne in Swedish) River at an earlier date during their spawning migration. ....

Eteläuomen Läi , Baltic Sea , Oceans General , Norra Savolax , Kalix River , Antti Miettinen , Ossi Tuuliaisen , Tornio Torne , Swedish Agency For Marine , Environmental Sciences , University Of Helsinki , Kuopio Naturalist Society , Swedish Research Council Formas , Baltic Sea Fund , Swedish University Of Agricultural Sciences , Ossi Tuuliainen Foundation Raija , Finnish Foundation For Nature Conservation Suomen Luonnonsuojelun , Natural Resources Institute Finland Luke , Kalix Rivers , Natural Resources Institute Finland , Swedish University , Agricultural Sciences , Tornio River , Swedish Torne River , Torne River , Swedish Agency ,

Water and genes flow between two largest Baltic salmon rivers

Date Time
Water and genes flow between two largest Baltic salmon rivers
Salmon from upstream reaches of the two northernmost Baltic rivers are different from downstream salmon. A recent study found that upstream salmon from the large Tornio and Kalix Rivers in Finland and Sweden are genetically distinct and migrate at different times and ages than their downstream counterparts. However, there seems to be no such distinction between salmon from these two neighbouring rivers.
Traffic is busy below the surface of the Baltic Sea and rivers flowing into it. Starting in early summer, mature salmon migrate from the sea into their home rivers to spawn. The study by the University of Helsinki, Natural Resources Institute Finland (Luke) and Swedish University of Agricultural Sciences (SLU) found that salmon destined to spawn far upstream entered the Tornio (Torne in Swedish) River at an earlier date during their spawning migration. ....

Eteläuomen Läi , Baltic Sea , Oceans General , Norra Savolax , Kalix River , Antti Miettinen , Ossi Tuuliaisen , Tornio Torne , Swedish Agency For Marine , Environmental Sciences , University Of Helsinki , Kuopio Naturalist Society , Swedish Research Council Formas , Baltic Sea Fund , Swedish University Of Agricultural Sciences , Ossi Tuuliainen Foundation Raija , Finnish Foundation For Nature Conservation Suomen Luonnonsuojelun , Natural Resources Institute Finland Luke , Kalix Rivers , Natural Resources Institute Finland , Swedish University , Agricultural Sciences , Tornio River , Swedish Torne River , Conservation Genetics , Torne River ,