Varsha won the second 🥈 prize for beat oral communication! Well done Varsha well deserved !

It's not a difference in cell types but how the fish use their cells (encapsulation of the parasite for coho for example) or how the parasite immunomodulatea the fish (as in Atlantic salmons)
Sarah is leaving the Roslin and starting her group in @exeter.ac.uk, she will be missed !

José's group has been instrumental in developing genomic selection and investigating generic architecture of complex disease resistance traits in salmonids in Chile with also a worldwide impact. The present resolve around high density, wgs data, will the future be gene editing? 🧬✂️
🧪🧬🖥️

There will be more, including a talk by @lucavegu.bsky.social later today on host génome and skin microbiome information for sea lice burden in A. salmon!
There are a few posters as well to look at during the breaks and poster session 👀

The Chilean delegation came in number, we had a couple of talks already on rainbow trout: on IPNv resistance and impact of l vaccination of Genomic predictions, characterisation of impact of transposable elements in response to SRS 🌈🐟

@romainmorvezen.bsky.social is now looking for a postdoc to analyse new dataset of phenotypes and genotypes for field mortality resistance so if you want to join the SYSAAF team in Rennes reach out to him (I've collaborated with them during my PhD and it's a great group!)
🧬🖥️

In France, mass selection is combined with parentage assignment to maintain genetic diversity since 2012 and since 2019 genomic selection is also used to improve oyster resistance to diseases, with great success so far !

In France oysters are pretty important, and hatchery spat (baby 🦪) represent 30/40% of total spat but more than 50% of final produce because selected oysters perform better than wild one, especially when facing pathogens

Using cohabitation Batya tried to answer if those fishes can be infected by the virus (not really) if they can transmit the disease and infect common carp (no) and with injection she looked at resistance (do they die? No)
A super clever approach! I can't wait to read the publication! 🧬🐟

Omics can also be used to detect early pathogen outbreaks in pounds for barramundi, as shown by Varsha Balu (James Cook Uni, Australia). Using eDNA from water sampling (non invasive) she was able to detect the presence of two pathogens in pounds, that could be associated with changes in salinity.

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

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

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)

So far it's been really good, high quality talks (and great weather and food which is also important to fuel the brain)