This year, traps will be installed in 63 Norwegian rivers to remove pink salmon before they are able to spawn. New publication assessing these extraordinary measures, based on experiences two years ago: reabic.net/journals/mbi/2025/2/MBI_2025_Thorstad_etal.pdf @ninanatureresearch.bsky.social

Do poor growth conditions at sea result in salmon returning to rivers to spawn at a younger or older age? New study shows that that rapid growth can lead to later maturation but maturation age can be influenced by shifts in growth during the marine migration link.springer.com/article/10.1... 🐟

Looking for a PhD? There is an opening for a PhD-student in evolutionary ecology on phenotypic plasticity in aquatic organisms at NTNU in Trondheim, Norway – with two super-good supervisors (Sigurd Einum and Tim Burton) - highly recommended! www.jobbnorge.no/en/available...

Invading and range-expanding pink salmon inform management actions for marine species on the move: new paper in @icesmarine.bsky.social ICES J Marine Science academic.oup.com/icesjms/adva... @profcolinbean.bsky.social @jaakkoerkinaro.bsky.social @jalangan.bsky.social @ninanatureresearch.bsky.social

One quarter of freshwater animals at risk of extinction.
New publication in Nature presents the largest global assessment of freshwater animals on the IUCN Red List to date. More than 23 000 species assessed! www.nature.com/articles/s41...

The status of European eel remains critical. ICES advises that there should be zero catches of eel in all habitats in 2025. Further, that all non-fisheries related anthropogenic mortalities should be zero @icesmarine.bsky.social ICES advice available at ices-library.figshare.com/articles/rep...

The European eel has strongly declined, and numbers of glass eel remain very low. In 2024, the recruitment of glass eel was near a historical low in the North Sea area (1% of the level in the 1960-70s, elsewhere 7%). Report from ICES eel group doi.org/10.17895/ice...

Escaped farmed salmon have a huge genetic impact on wild Atlantic salmon. Large genetic changes by hybridisation with farmed salmon are documented in 77 Norwegian salmon rivers (31% of populations). New report brage.nina.no/nina-xmlui/h... abstract in English

Novel large-scale mapping highlights poor state of sea trout populations. Salmon lice from salmon farms had by far the largest adverse effect on sea trout. Agriculture and hydropower also had strong adverse impacts, but substantially lower than lice doi.org/10.1002/aqc....

New review on Atlantic salmon predation: There is little evidence that predation alone will drive salmon to very low levels. In a population that is strongly reduced due to human impacts, predation may reduce the population further and make recovery very difficult. cdnsciencepub.com/doi/10.1139/...

More than 100 scientists and managers met in October at the 3rd international seminar on invasive pink salmon in the Barents region and in Northern Europe. Abstracts from the talks are now published www.statsforvalteren.no/siteassets/f...

The status of European eel remains critical. The advice from ICES is that there should be zero catches of European eel in all habitats in 2024 - and that all non-fisheries related anthropogenic mortalities should be zero. ICES advice is available at ices-library.figshare.com/articles/rep...

We used scale isotopes to understand trophic ecology of Atlantic salmon during first year at sea. Isotopes can also reflect migration routes, and it looked like routes of first-time migrants resembled those of older, previous spawners satellite tagged in earlier studies dx.doi.org/10.1002/ece3...

Thinking about taking a PhD or MSc course under the northern light? We arrange a course in Fish-migrations; science, telemetry, management and politics in Tromsø Norway at @UiTromso 19 Feb-1 March 24.
Register before 1 Dec
MSc uit.no/utdanning/em...
PhD uit.no/utdanning/em...

Salmon lice from aquaculture salmon farms push sea trout towards a crisis - The impact on sea trout is so large, and covers such large geographical area, that this threat alone has been and will be the determining factor for the development of sea trout in Norway. New report vitenskapsradet.no

The European eel has strongly declined since 1980, and numbers of glass eel remain very low. In 2023, recruitment of glass eel was 0.4% of the level in the 1960-70s in the North Sea area and less than 9% elsewhere. New report from the ICES eel group ices-library.figshare.com/articles/rep...

Report from Northern Hemisphere Pink Salmon Experts Meeting: Review of Pink Salmon in the Pacific, Arctic, and Atlantic Oceans doi.org/10.23849/TFO...
Warming temperatures may be fueling increased pink salmon production at their northern distributional extent both in the Pacific and Atlantic/Arctic.

European eel are catadromous; spawn at sea, feed in freshwater. Well, that’s not the full story. Some don’t migrate to freshwater at all, and some move between salt and freshwater several times during life. The evolving story of catadromy as IJMS Food for Though Durif et al. doi.org/10.1093/ices...