Day 19’s #25DaysofFishmas feature wouldn’t feel out of place at Santa’s Workshop! ❄️ We trade a our road-trip car for a seaplane and head north - very north - to Alaska and the Alaska Blackfish (Dallia pectoralis), a tough-as-ice fish that breathes air and has been described as “a bulldog with fins”

Excited to launch the new improved Reproducible Code guide from @britishecologicalsociety.org @methodsinecoevol.bsky.social FREE online here! www.britishecologicalsociety.org//wp-content/... Amazing work by some very talented ECRs. We hope it’s useful!

Glad to have the final version of this out! Advice for anyone with low coverage genomes wanting reliable measures of inbreeding 🧬

Team fish - we need your help! We are trying to build a database of all the fish chromosome-scale genomes where sex chromosomes have been identified. Have you build one or some? Do you know someone who has? Can you post the link in the comments? Please spread the word and repost! Thank you!

Great talk by @chantellehooper.bsky.social who presented her work investigating microbiome changes in healthy and languishing shrimp at the Cefas Student Day @cefasgovuk.bsky.social! 🦐🧬🦠

If you missed my talk but still want some tips for writing good code for scientists, my slides are here: daxkellie.quarto.pub/a-guide-to-w... All the links and references are there too in case you want to see more! 😀🧪🌏 #ESA2025 #rstats #quartopub

Integrative PhD position available in my lab on the mechanisms (gene expression, metabolism, microbiome and hormones) of intestinal remodelling in lampreys. Come work in a great and fun research environment with @nealdawson.bsky.social & Adam Dobson (not here). Apply: www.gla.ac.uk/colleges/mvl...

*NEW OPPORTUNITY* with the WISE Lab and Saugeen Ojibway Nation on "Community-Driven Mukwa (Black Bear) Conservation" - Please share!

Interested in thermal biology? Please join our new and growing grass roots initiative, the Thermal Ecology Alliance, initiated by @patricepottier.bsky.social. 🧪🐟🦑🌡️ Sign up here: www.thermalecologyalliance.org#participation Check who already signed up: www.thermalecologyalliance.org#community

Very cool population genomic look into local adaptation against gene flow at a relatively small spatial scale, urban/rural gradients across metro Toronto, in this month's @journal-evo.bsky.social Signatures of selective sweeps in urban and rural white clover populations buff.ly/IfNhLx7

Love how curious these baby (young-of-year) Atlantic cod are😍 #teamfish #ecology #iceland

This advancement will boost genomic research and efforts to protect this threatened species. Paper here: doi.org/10.1093/jher... Corresponding author: cypayne.github.io #JHered #OpenAccess

Here's a new genome from the CCGP: The Lahontan Cutthroat trout (Oncorhynchus clarkii henshawi). This species, endemic to Western North America, may be in danger of extinction. Photo: NDOW

You are invited to submit a session to the 2026 Joint Aquatic Conference of the @iaglr.bsky.social and @Society of Canadian Aquatic Sciences (SCAS-SCSA), and hosted by @experimentallakes.bsky.social !!! Check out the call for sessions at: iaglr.org/iaglr-scas26... - Deadline: September 19.

Our new paper on population genomics of black surfperch. I am incredibly happy, decades in the making.... onlinelibrary.wiley.com/doi/10.1111/...

Cutting teeth probably let smaller sharks get higher in the food web than those with grasping teeth. Awesome stable isotope study led by fabulous PhD graduate Sabrina Riveron! @griffith.edu.au onlinelibrary.wiley.com/doi/10.1002/...

Young Blackbird with a Blackberry, today at Catcott

Skeleton shrimps dancing in the docks (make me think about baby groot). #MarineLife #PortBiodibersity

‼️ Calling All Students ‼️ 🪼 2025 Peter A. Larkin Awards for Excellence in Fisheries 🪼 Applications are being accepted DUE Friday, June 20 $200 Cash & Travel to @scas-scsa.bsky.social #2026 Email YOUR application to [email protected] today!

Fish and Fisheries is seeking a new Editor-in-Chief. Please apply to guide the future of this leading journal. onlinelibrary.wiley.com/page/journal...

🚨 Last discounted seat available! The final spot at the 60 EUR discounted rate is still open for our Spatial Data Visualisation in R course. Please feel free to share this opportunity with researchers and students from developing countries who may be interested. 👉 forms.gle/VzUEPdrKFQm8...

28-mo postdoc OPEN TO ALL in Cork 🇮🇪. Hybrid #ecoengineering in #saltmarshes @ucc.ie. 🇪🇺-funded BLUESHORES Project. Collaborators: Laura Airoldi (Uni Padova 🇮🇹), Tjeerd Bouma & @jimvanbelzen.bsky.social (NIOZ 🇳🇱) Start: 1/9/25. Salary: €45k–€52k. 🌱🌊🦀🐌 See link: universityvacancies.com/university-c...

GenDivRange: A global dataset of geo-referenced population genetic diversity across species ranges #popgen #consgen www.nature.com/articles/s41...

Just finished a fantastic week at the Flow Cytometry #GRINNAQUA Summer School, organized and hosted by our project partner INIA. Great mix of hands-on training, insightful talks, and engaging discussions. Huge thanks to everyone who made it happen!

💫 PLEASE SHARE 💫 I’m hiring a short-term program manager: * Flexible location in 🇨🇦 * Start date ASAP * Apply by Fri June 20 * Must already be legally allowed to work in 🇨🇦 * www.natureconservancy.ca/en/who-we-ar... #ConservationJobs

🚨🚨🚨Funded PhD position in my lab‪ @exeter.ac.uk: www.exeter.ac.uk/study/fundin... 💪🐟 Project will investigate sea lice resistance in salmonids 🗓️Deadline: June 20 🔁Please share widely, I appreciate any re-posts! ✉️Feel free to reach out with any questions. #academicJobs #PhD #phdposition 🧬🐟🧪💻

It's online! Happy to have contributed to this publication by @vishruthvenkat.bsky.social @vprincelab.bsky.social #DevBio @devbiol.bsky.social on the development of the #zebrafish anterior lateral line and the tissue-tissue interactions that shape it www.sciencedirect.com/science/arti...

Going to Sherbrooke in July for the CSEE conference? Need a lift from T.O., Montréal, Québec, Ottawa or similar locales? Here is a link for the carpool: docs.google.com/spreadsheets... Not registered yet? The program is posted, looks exceptional. Register here: event.fourwaves.com/scee2025/reg...

Postdoc opportunity! The Comparative Genomics lab (@IBE_Barcelona, @UPFBarcelona) is seeking a postdoc with experience to work on environmental DNA and mammalian monitoring together with @estherlizano ! CVs -> [email protected] #postdoc #genomics #eDNA #conservation #Barcelona

And @salisburyfish.bsky.social wins first prize for the beat on oral communication! 🎉🎉 Well done Sarah ! #ISGAXV

Feed represents an important portion of production cost (30-70%) and has a big carbon footprint. Selecting more efficient fish will help reduce the ecological impact of aquaculture while increasing income to farmers and maintaining production to feed the world (with fish, not fish feed 😉🐟)

Really interesting talk in light of Marc's one, seeing multiple phenotypic techniques for the same trait. Questions of feeding behaviour remain to be answered when using feeding stations. But AI and image recognition models will help with this very important trait

Back after coffee at #ISGAXV and another talk on feed efficiency, by Prof Peng Xu from Xiamen University. Using feeding stations inspired by the dry livestock world they developed an automatic real time model to measure individual feed intake in tanks and managed to improve FCR 🧬🖥️🐟

Does integrating functional annotation data in genomic prediction models improve the accuracy of the prediction? In livestock it depends on the trait, the species, and the type of functional data... With mixed results. We're more and more interested in testing this in aqua species #ISGAXV 🧬🖥️ 🐟

And the final talk of this morning #ISGAXV is on developing line breeding in tilapia (the aquatic chicken) to fit farmers demand for fish adapted to their market as "one size doesn't not fit all" as Raseh Joshi from GenoMar presented 🧬🖥️🐟 And now, we break for lunch !

Why is aquaculture so interesting (in my opinion)? because of the diversity of environment and species that are farmed. Alexandre W. Silva Hilsdorf presented the beginning of farming and selecting Dusky grouper un Brasil. Using optimized LD SNP panel for accurate parentage assignment

Disease resistance is key to sustainable aquaculture and increased animal welfare. In his talk today at #ISGAXV Zhi Weng (Tropical futures institute, James Cook uni) showed that barramundi resistance to SDDV is heritable and can be increasing, in field, through selection using controlled challenge

An interesting study by Brad Evans from CSIRO on seasonal growth of A. salmon in Tasmania (where the water is warmer than in Scotland). They showed differences in summer growth between families. Low genetic correlation estimates between growth measured at different time 🌨️🌧️☀️🍂

Simon Pouil from @umr-gabi.bsky.social looked (and found) selection signature in two divergent lines of rainbow trout selected for fat content l, identifying regions on Chr 7 linked with fat deposition but also energy metabolism and stress response 🐟🌈 🧬

Back from lunch at #ISGAXV and it's time for quantitative genetics and breeding 🧬🖥️ and we started with Cécile Massault presenting her model that captures the additive genetic host-donor interaction in pearl oyster, looking at incorporating it in breeding programme for pearl size 🦪

Followed by another 🦪 presentation by Hooi Ling Khaw, looking at genetic variance of uniformity of Pacific oyster shells.

Another 🦐 talk with Marina Martinez Soler estimating genetic parameter of resistance to hepatopancreas necrosis after an immersion or a feed induced challenge. Survival had a medium h2 with positive correlation with growth (high in immersion, low in feed induced mortality)

Still at #ISGAXV and attending the last session of the day.🧬🖥️🐟🦪🦐 Earlier there was a presentation by Pierrick Haffray (SYSAAF) on accounting for molt stages in genetic evaluation of 🔵🦐. Showing that time to molt was heritable but molt stages wasn't in their dataset (late measurement)

At #ISGAXV, Florence Phocas from @umr-gabi.bsky.social just presented their latest results (available in BioRxiv) and identified 63 SNPs explaining up to 74% of the genetic variance after immersion challenges in commercial rainbow trout. A work done with colleagues from #SYSAAF

Have you heard about IPNv and salmonids? Maybe you know that there is a major QTL that was identified in A. Salmon in 2008/2009... Well this time there is major QTLs identified in rainbow trout for the same disease ! www.biorxiv.org/content/10.1...

We also need to consider social acceptance of gene editing among consumers. A lot to think about for a technology that will be part of the future of selective breeding for some aquaculture species and companies

But designing a breeding programme to incorporate edited genotypes and to maintain it requires some thinking: we need to keep a high effective population number, keep diversity, make sure the edited fish are competitive VS selectively selected fish

Day 2 of #ISGAXV, in the plenary Anna Sonesson from Nofima (Norway) gave us her insights on how to design breeding programmes to integrate gene editing. GE is a very promising tool to increase disease resistance when the causal gene is known, to quickly fix a favourable allele in the population 🧬🐟