Star-Oddi

07/01/2026

Applied biotelemetry collection 🐑 🐓 🐟 🐙

Animal Biotelemetry is calling for submissions to a special Collection on Advances in Applied Biotelemetry, focusing on the role of biotelemetry in addressing “real world” challenges by providing actionable insights for conservation, resources management, avi-, agri- and mariculture, animal husbandry and welfare.

Deadline: February 9, 2026 👉 https://link.springer.com/collections/fggabcghdh

05/01/2026

🐟 Four behavioural states of seabass defined based on level of heart rate and acceleration 💓

In a recent study, a team from Imedea Uib-Csic & Wageningen University & Research implanted 12 European seabass with DST milli-HRT ACT biologgers and subjected them to swim tunnel and crowding test. They measured a range of parameters including cost of transport (COT), head width frequency (HWF), head width amplitude (HWA), tail beat frequency (TBF), oxygen consumption (MO2), heart rate (HR), acceleration (ACC) and QRS wave amplitude (AMP).

You find a summary and publication link here 👉 https://www.star-oddi.com/news/latest-news/four-behavioural-states-of-seabass-defined-based-on-level-of-heart-rate-and-acceleration

A team from IMEDEA-CSIC and Wageningen University implanted 12 European seabass with Star-Oddi DST milli-HRT ACT biologgers. They subjected them to swim tunnel and crowding test and measured a range of parameters. The loggers recorded ECG signals at 200Hz for 7.5 seconds and the acceleration was rec...

23/12/2025

🌟 🌟 Seasonal Greetings 🌟 🌟

The Star-Oddi team wishes you happy holidays and a prosperous new year! We thank you for your cooperation in 2025.​

During the holidays, our offices will be closed on December 24th-26th, 31st and January 1st.

22/12/2025

🐀 Heat Therapy Influences Thermoregulation and Behaviour in HFpEF Rats

🌟 Skeletal muscle contractions rely on a finely tuned neurovascular response. This meachanism ensures oxygen delivery matches metabolic demand. A key mechanism, functional sympatholysis, or the attenuation of sympathetic vasoconstriction during exercise, supports blood pressure regulation and exercise tolerance. Impairments in this process have been linked to reduced delivery of oxygen to the muscles in persons suffering from heart failure with preserved ejection fraction (HFpEF), a condition marked by severe exercise intolerance and limited treatment options.

🌟 In a recent study, researchers from Purdue University, UFSCar - Universidade Federal de São Carlos, Aurora University, and Embry-Riddle Aeronautical University investigated whether heat therapy, a promising cardiovascular intervention, can restore functional sympatholysis in HFpEF rats.

🌟 A total of 20 rats were implanted with Star-Oddi’s DST micro-ACT, small activity and temperature loggers. The physio-loggers were set to measure core body temperature every 3-4 minutes and activity every 7 minutes over 8 weeks.

📍 You find the results here 👉 https://www.star-oddi.com/news/latest-news/heat-therapy-influences-thermoregulation-and-behaviour-in-hfpef-rats

Skeletal muscle contractions rely on a finely tuned neurovascular response. This meachanism ensures oxygen delivery matches metabolic demand. A key mechanism, functional sympatholysis, or the attenuation of sympathetic vasoconstriction during exercise, supports blood pressure regulation and exercise...

19/12/2025

📢 Laboratory & Wildlife Newsletter December edition is out!

🐭 This time containing an article on how Basal Metabolic Rate (BMR) shapes thermoregulation in cold-stressed mice where Star-Oddi's tiny nano-sized temperature loggers were used measuring body temperature.

🐀 It also contains a study where our small DST micro-ACT activity loggers were used when investigating how heat therapy influences thermoregulation and behaviour in HFpEF rats.

Perfect reading during the holidays!

👉 https://us13.campaign-archive.com/?u=3d234e3bfa6d0a1bdaf3b1936&id=67ea3d621d

16/12/2025

🌊 🐟 Warming seas push polar cod out of Iceland’s waters

A new long-term study from Iceland’s Hafrannsóknastofnun Marine & Freshwater Research Institute reveals that polar cod is steadily retreating from the waters around Iceland as ocean temperatures rise. The research draws on nearly 40 years of standardised trawl surveys and shows a clear pattern: as waters warm, polar cod retreat northward and into deeper, colder environments.

Bottom temperatures during trawls were recorded using StarOddi's Starmon TD temperature and depth loggers, which were attached directly to the trawl gear and recorded temperature every minute. Their data were used to validate and correct readings from the main sondes, providing a consistent, high-resolution temperature record over multiple decades.

Summary and link to paper 👇
https://www.star-oddi.com/news/latest-news/warming-seas-push-polar-cod-out-of-icelands-waters

10/12/2025

🌟 Why study emerging H5N1 strains in ferrets? 💉

The rapid evolution and global spread of highly pathogenic avian influenza (HPAI) H5N1 viruses, particularly subclade 2.3.4.4b, have raised serious concerns about their potential to cause future pandemics. These viruses have increasingly infected a wide range of avian and mammalian species, including recent spillover into marine mammals and livestock.

To better understand the risks posed by newly circulating strains and to support the development of effective countermeasures, researchers are using updated ferret models to study the pathogenesis and virulence of these viruses under controlled conditions.

In a new study, scientists from Cerba Research, The Netherlands, Stiftung Tierärztliche Hochschule Hannover/University of Veterinary Medicine Hannover, Germany, and Star-Oddi, Iceland, implanted subcutaneously Star-Oddi DST micro-ACT loggers in 9 ferrets. The loggers were set to measure temperature every 5 minutes, and additionally they recorded raw tri-axial acceleration at 10Hz for one minute in the time space of 4 a.m.-5 a.m. and 4 p.m.-5 p.m. from which respiration rate was calculated.

📍 Read about the findings 👇
https://www.star-oddi.com/news/latest-news/why-study-emerging-h5n1-strains-in-ferrets

05/12/2025

📢 The December edition of our Ocean & Fish Research Newsletter is out!

It includes a long-term study (40 years!) which reveals that polar cod is steadily retreating from the waters around Iceland as ocean temperatures rise. Our robust Starmon TD loggers were used attached on trawls for temperature measurements.

Furthermore, it includes a recent study published in Scientific Reports where our DST milli-HRT ACT heart rate and activity logger was used in European seabass.

📍 You find it here, together with earlier editions 👇

https://www.star-oddi.com/news/aquatic-and-fisheries-newsletter

02/12/2025

🌟 New in Nature: Streamlining an A(H5) Influenza Vaccine 💉

Highly pathogenic avian influenza A(H5) viruses continue to pose a significant threat to global health, affecting wild and domestic birds, and increasingly spilling over into mammals, including humans. Their rapid antigenic evolution complicates vaccine development and pandemic preparedness as traditional approaches struggle to keep pace with emerging variants.

To address this challenge, researchers are exploring innovative strategies to design vaccines that offer broad protection across the diverse antigenic landscape of A(H5) viruses.

🔥 Hot off the press in Nature (Springer Nature), a group of scientist in the Netherlands (Erasmus University Rotterdam and Utrecht University) and the UK (University of Cambridge) have mapped the global antigenic evolution of avian influenza A(H5) by constructing a high-resolution antigenic map of 127 HA antigens. The group implanted 6 ferrets in each group with DST micro-T tiny temperature loggers 14 days after the prime vaccination.

Read a summary here: 👇
https://www.star-oddi.com/news/latest-news/new-in-nature-streamlining-an-ah5-influenza-vaccine

27/11/2025

📢 The winner in our raffle/lottery at Coastal and Estuarine Research Federation CERF is.....drum drum drum......
...... Whitney Scheffel at Pensacola & Perdido Bays Estuary Program! 🌟 🎉 Congratulations 🥳

The winner gets a DST CTD or CT conductivity logger with accessories, suitable for i.e. estuary research and environmental monitoring 🌟

24/11/2025

🐟 High-density farming raises stress in olive flounder

Olive flounder is the cornerstone of South Korea’s aquaculture industry, accounting for about 81% of land-based tank-reared fish production between 2006 and 2023. Maintaining competitiveness across farms requires efforts such as improving aquaculture conditions, selective breeding, optimized feed, and efficient management. However, the high-density rearing practices often used to reduce production costs can increase disease risk and suppress growth.

A recent study published in Aquaculture (Elsevier ) by researchers from Chonnam National University and the National Institute of Fisheries Science in South Korea aimed to move beyond traditional stress indicators such as cortisol, and equipped 16 olive flounders with Star-Oddi's implantable biologgers DST milli-HRT.

📍 You find a summary here 👇
https://www.star-oddi.com/news/latest-news/high-density-farming-raises-stress-in-olive-flounder

21/11/2025

🦀 Tiny crab tenants reveal the coral reef’s hidden strength

In a two-year study, scientists from King Abdullah University Of Science And Technology - KAUST, University of Groningen, and the Naturalis Biodiversity Center have uncovered surprising secrets about one of the reef’s smallest residents — coral-dwelling gall crabs. Despite being only a few millimetres long, these crabs play a crucial but often overlooked role in the health and resilience of coral ecosystems.

The research team tracked 799 individual crabs living on 517 coral colonies across four reefs in the central Red Sea. In 2023, a severe coral bleaching event struck the region. To understand the environmental trigger, the team deployed Star-Oddi 🌟 DST CT conductivity and temperature loggers 🌟 , which recorded water temperature every ten minutes. The loggers provided a crucial link between rising ocean temperatures and the coral community’s collapse offering data on how heatwaves develop in the ocean.

You find a summary of the article here 👇
https://www.star-oddi.com/news/latest-news/tiny-crab-tenants-reveal-the-coral-reefs-hidden-strength