Paolo Moccetti

Photo by Panu Orell. A juvenile salmon in a river, on top of a red and black rock. There is algae around the rock in the river bottom but the water is very clear. Sunlight is reflected on the fish scales, and showing the red and black dots, and brown, tall stripes on the side of the fish.

🐟🌡️🧪 New study from #ThermoEvo project
@luke.fi: Juvenile Atlantic salmon show no increase in aerobic scope during an ecologically realistic #heatwave.
This suggests limited capacity to cope with higher oxygen demand in warming rivers, when O2 costs increase.
onlinelibrary.wiley.com/doi/10.1111/...

Ever needed to measure the morphological features of your organism across hundreds of images? 🤯 HusMorph uses #MachineLearning to detect morphological landmarks in the image, speeding up your #ImageAnalysis time!

Read it here: doi.org/10.1093/conp...

NoWPaS 2026 Application form NoWPaS (International formerly Nordic Workshop for PhD and Post-Doctoral fellows on Anadromous Salmonid research) is an annual workshop, which aims to build and maintain an international network of ea...

🐟 CALL FOR ABSTRACTS OPEN for #NoWPaS2026!

📍 Hólar University, Iceland 🇮🇸
📅 March 2–7, 2026
🧑‍🔬 For early career researchers on anadromous salmonids
🗓️ Deadline: Nov 10, 2025
👉 forms.gle/unryb2EZEcp1...
ℹ️ nowpas.wordpress.com

Join us in Iceland for science, salmonids, and connections!

#JFB: Spatial ecology and population dynamics of brown trout 𝘚𝘢𝘭𝘮𝘰 𝘵𝘳𝘶𝘵𝘵𝘢 L. in reservoirs and headwater tributaries doi.org/10.1111/jfb.15814 #FishSci

Predator-mediated resource limitation shapes body and head size variation in stickleback populations Abstract. Predator and prey communities are important putative drivers of phenotypic variation in consumers. However, in natural food webs, we often lack a

2 results, and 3 speculations from this paper: academic.oup.com/jeb/advance-...

Results: (1) Greenlandic stickleback co-occurring with Arctic char are bigger and (2) have relatively smaller heads than when stickleback are alone in a lake.

Defining conservation units in a highly diverse species: A case on Arctic charr Defining appropriate conservation units is crucial to the protection and management of biodiversity. These delineations deliver further benefit when they encompass assessments of population vulnerabil...

Excited that the latest work from my PhD is available as a pre-print! (doi.org/10.1101/2025...)
We explore the challenges in delineating conservation units within highly diverse species using the salmonid species Arctic charr as a study system!

#JFB: A common garden experiment in the wild reveals heritable differences in migration tendencies among brown trout populations doi.org/10.1111/jfb.16068 #FishSci

Will you help us save #ArcticCharr from extinction in the #LakeDistrict?

Our campaign to raise funds for the Lake District Charr Recovery & Management (LD-CHARM) project has just launched!

From 22-29 April your donations will be doubled!

Find out more & donate:
donate.biggive.org/campaign/a05...

Super happy to see our new article on how pharmaceutical pollution can influence salmon migration out in @science.org!

This was a huge effort by a great team of researchers over the last few years!

You can read the paper here: science.org/doi/10.1126/sc…!

We are looking for a post doc (2 year position) to work on fundamental and applied salmonid migration ecology. Work place is Eawag in Kastanienbaum, Switzerland, located on the shores of Lake Lucerne. See more here:
apply.refline.ch/673277/1241/...

Watershed-scale dispersal patterns of juvenile Chinook Salmon (Oncorhynchus tshawytscha) revealed through genetic parentage analysis - Movement Ecology Background For many aquatic taxa, juvenile dispersal from spawning locations to rearing habitats is a critical process influencing individual fitness and population dynamics. However, our understandin...

When baby salmon emerge from the gravel, how far do they disperse to summer rearing grounds? We haven't known until now (at least at the population scale), because they're too small to tag. In a paper just out, we answered this question using parentage-based (genetic) tagging! tinyurl.com/39b2sfjd

Weird Nature: Shrew-Eating Trout! From Togiak National Wildlife Refuge in Alaska comes this story of a gluttonous, mammal-eating rainbow trout. Just when you thought it was safe to go back in the water...

Trout will eat shrews when available (sometimes gorging on them) & are not affected by their venom or objectionable taste.

Million-dollar question! As you say, we need temporal replication in the years to come to investigate this.
It will be exciting to see what turns out…

@jessrodger.bsky.social @sceneuog.bsky.social @andydnunn.bsky.social

🚨 New Paper Alert 🚨

Interested in fish #migration 🐟, acoustic #telemetry 🔊, #genomics 🧬, and #morphometrics 📐?

Check out how we combined them all in this study!

Read it here #OpenAccess

👉 onlinelibrary.wiley.com/doi/10.1002/...

Fast and cost‐efficient species identification of Atlantic salmon (Salmo salar L.), brown trout (Salmo trutta), and their hybrids using a single SNP marker A workflow for developing a cost- and time-efficient, single nucleotide polymorphism (SNP)-based assay for species and hybrid identification is described. In a reference set (n = 46), the developed a....

Atlantic #salmon, brown #trout and their hybrids can be difficult to distinguish, especially at early life stages. This new DNA-based method can be used to screen lots of individuals to verify the species or detect hybrids! 🧪🐟

With a low-cost DNA extraction, it is less than 1 euro / sample.

Getting Scarce and Lure Shy: Impacts of Recreational Fishing on Coastal Northern Pike (Esox lucius) Abundance, Size Structure and Vulnerability to Angling Controlled experiments have shown that northern pike (Esox lucius) is able to develop lure avoidance, but whether such patterns exist in the wild is unknown. We assessed the impact of recreational fi...

Angling creates hook shy pike, our latest paper finds. onlinelibrary.wiley.com/doi/full/10....

Paper alert: We used acoustic telemetry combined with stable isotope analyses in a southwest Greenland fjord to investigate marine migrations, thermal habitat use, and marine feeding habits of Arctic charr cdnsciencepub.com/doi/pdf/10.1...
@oceantracking.bsky.social @aquatictracking.bsky.social

Once near extinction, lake trout are officially recovered in Lake Superior | Bridge Michigan A binational group of fisheries experts made the declaration Wednesday, after seven decades of effort to recover the fish from a collapse caused by invasive species and overfishing.

Now for some good news:

"Seven decades after overfishing and invasive species nearly wiped them off the map, Lake Superior’s lake trout population has finally recovered."

via @bridgemichigan.bsky.social

www.bridgemi.com/michigan-env...