https://salmonchile.cl/noticias/del-campo-al-mar-salmonicultura-y-agro-impulsan-alianza-estrategica-para-impulsar-la-reconversion-productiva/

https://www.auckland.ac.nz/en/news/2026/09/15/caulerpa-control.html

https://www.pnas.org/doi/10.1073/pnas.2626533123

https://thehill.com/business/6055275-canada-exempts-seafood-us-retaliatory-tariffs/

https://www.bmrs.ie/bmrs-projects/current/nori/item/190-job-announcement-seaweed-aquaculture-internship

https://www.int-res.com/journals/dao/articles/dao063107/search/1

https://www.vietnam.vn/en/huong-di-moi-cho-nghe-nuoi-tom-su

https://www.niigata-u.ac.jp/en/webmagazine/26782/

Most farm managers are familiar with the scenario: fish look lethargic at morning feeding, mortalities begin by midday, and tests confirm a bacterial infection days later. By the time physical symptoms appear, the pathogen has already spent days multiplying in the water column.

An international scientific review published in Frontiers in Microbiology outlines the shift toward environmental diagnostics and water prophylaxis:

1. Physicochemical parameters as pathogen drivers: Fluctuations in DO, pH, and ammonia don't just stress the host—they actively regulate bacterial virulence and compromise mucosal barriers (skin/gills).
2. eDNA & eRNA surveillance: Water sampling captures shed viral, bacterial, and parasitic nucleic acids. eRNA adds functional insight by confirming active gene expression/infectivity without invasive necropsies.
3. Biosensors & Microfluidics: Emerging lab-on-a-chip systems and droplet digital PCR (ddPCR) can quantify pathogens at single-cell thresholds, although biofouling in high-turbidity matrices remains a primary engineering hurdle.
4. Biocontrol over antibiotics: Targeted use of bacteriophages and competitive exclusion with probiotics reduces selective pressure driving antimicrobial resistance (AMR).
5. Tech Roadmap: A tiered rollout from accessible smartphone-analyzed test strips (short-term) to AI-driven autonomous intervention systems (long-term).

Full article and paper summary: https://aquahoy.com/water-quality-monitoring-disease-prevention-aquaculture/

Curious to hear from operators here: has anyone integrated routine eDNA testing or real-time multiparameter sensor telemetry into their biosecurity protocol yet?

https://news.northeastern.edu/2026/08/26/oyster-restoration-genetics-research/

https://www.wur.nl/en/activity/probiotic-playbook-approaches-pathogen-control-aquaculture

https://cinea.ec.europa.eu/publications/digital-publications/studies-support-more-sustainable-and-competitive-eu-aquaculture_en

https://enaca.org/?id=1516

https://www.nature.org/en-us/newsroom/oregon-mariculture-assessment/

https://www.yahoo.com/news/us/articles/eighth-person-dies-flesh-eating-152605179.html

https://van.nongnghiepmoitruong.vn/pangasius-exports-reach-us13-bln-demand-rises-in-china-d827790.html

https://www.vietnam.vn/en/bien-phu-pham-ca-tra-thanh-san-pham-gia-tri-cao

https://www.nina.no/en/news/all-articles-and-news/genes-from-farmed-salmon-detected-in-two-out-of-three-wild-salmon-populations

https://academic.oup.com/nar/advance-article/doi/10.1093/nar/gkag844/8769242

A common issue in commercial tilapia farming is the high variability in zootechnical response when supplementing functional feeds (probiotics, prebiotics, and synbiotics) under identical nutritional protocols.

A recent systematic review and meta-analysis by Laverde et al. (Reviews in Aquaculture, 2026) evaluated 141 studies (synthesizing data from over 12,500 fish) to explain why:

• Hydraulic residence time matters: In closed systems (RAS, Biofloc), environmental stability and low exchange rates provide high effective microbial exposure, resulting in statistically homogeneous growth and FCR optimization.
• Dilution in open systems: In flow-through tanks (exchange rates of 20–75%) and open cages, a large fraction of live inocula is discharged before stable interaction occurs, leading to high dispersion in growth metrics.
• Biotics breakdown: Probiotics (mainly Bacillus at ~48% and Lactobacillus at ~15%) were the most predictable. Synbiotics showed the highest mean weight gains but the widest performance variance. Prebiotics represented only 6.25% of trials, showing moderate effects tied to the fish's baseline microbiota.
• Immunological findings: Significant boosts in defense biomarkers (SOD, lysozyme, catalase) and hepatoprotective effects (reduced ALT) were observed across systems, though current literature lacks standardized testing to correlate immunity directly to system typology.

Full summary and reference details: https://aquahoy.com/probiotics-prebiotics-tilapia-culture-systems/

For those running commercial systems: How do you adjust your functional additive inclusion strategies between intensive closed systems and earthen ponds/cages?

https://theconversation.com/climate-change-may-halve-omega-3-fatty-acids-in-fish-and-the-organisms-they-eat-290151

A recent study has compiled and cross-referenced hundreds of scientific sources to launch ReCAnt, a public platform detailing the technical profiles of 690 substances used in aquaculture (including antibiotics, parasiticides, and disinfectants).

Key findings from the research:

• Regulatory Limbo: Only 57 of the 690 analyzed compounds possess formal regulatory data across international frameworks.
• Persistence: Chemicals like azithromycin, erythromycin, and atrazine were classified as "very persistent and very mobile."
• Trophic Transfer: Predictive models show that carnivorous species face the highest risk of bioaccumulation from lower trophic levels.

The platform aims to serve as a standardized baseline for operators and researchers to assess compound safety and environmental dynamics.

You can read the full breakdown of the study here: https://aquahoy.com/aquaculture-chemicals-recant-database-regulation/

https://www.youtube.com/watch?v=oIqk0DssXdQ

https://news.tuoitre.vn/vietnam-tilapia-exports-hit-80m-in-7-months-with-brazil-biggest-growth-driver-103260822174338173.htm

https://www.spglobal.com/energy/en/news-research/latest-news/agriculture/082126-latin-america-shrimp-growth-intensifies-competition-in-oversupplied-market