News

The research group from the Jill Leonard’s lab at Northern Michigan University in Marquette, MI, is taking Loligo respirometry into the field. The objective is to evaluate resting and maximal metabolic rate in wild brook trout with the goal of classifying individual fish by metabolic ranking. To accomplish this, Jill’s team is taking a Loligo 4-chambered intermittent flow system to the streamside.

“We have validated field measurement protocols for our metrics with matching lab experiments that compare to traditional experimental parameters. The system will run on a generator for power and use native river water for experimentation and temperature control. Once the fish are ranked, they will be PIT tagged and released back to their native river where we will monitor movement behaviors with stationary and mobile antenna systems.” says Jill Leonard.

Prior research has identified a continuum of movement strategies in the species ranging from stationed at a specific site to wandering throughout the entire river to true migration. This research seeks to correlate movement behaviors with physiological metrics at the individual level to help understand why different life history strategies are selected within partially migrant populations.

Please meet Loligo^® Systems at the 13^th International Congress on the Biology of Fish in Calgary, Alberta.

The biennial event is expected to attract around 400 delegates from all over the globe. Symposia range in topics related to fish biology, including behavior, stress physiology, ion regulation, swimming and energetics, toxicants, growth and metabolism, genomics, impact of climate change, use of zebrafish as a model for biomedical research and many more.

ICBF 2018 will take place from July 15^th – 19^th at University of Calgary.

We have just launched a new version of our MicroResp^® software with added features and improvements for better performance, and a handy quick guide for the MicroResp^® systems.

New software features:

• “Show All”-graph showing real-time oxygen traces for all 24 wells during experiments, with different colors for each user-defined treatment
• Guides for lower/upper limits and wait time on experiment graphs
• More user choices for sampling rate

Please download the new quick guide.

We hope that the guide will help new and current users.

Best of luck with your future microplate projects!

Our office will be closed for the summer holiday from 16th - 27th of July (both days included).

We wish everyone a lovely summer!

The Loligo^® team

Dr. Maria Bertuzzi & Dr. Konstantinos Ampatzis from Karolinska Institutet used a Loligo^® 5 L swim tunnel respirometer to test the critical swimming speed (U_crit) in multiple adult zebrafish. The researchers investigated the functional flexibility of motoneurons and how the neurons execute locomotion at different speeds. Specifically, Bertuzzi & Ampatzis found that cholinergic interneurons are present in the zebrafish spinal cord and differentially control the excitability of distinct classes of motoneurons (slow, intermediate and fast) in a muscarinic dependent manner. Their unexpected findings are published in Nature’s Scientific Reports. Scientific Reports.

Full article:

Spinal cholinergic interneurons differentially control motoneuron excitability and alter the locomotor network operational range

Maria Bertuzzi & Konstantinos Ampatzis (2018)

Scientific Reports

Link to article

Loligo^® Systems will be present at the SETAC Europe 28th Annual Meeting. The 5-day annual meeting will take place in Rome and will feature a variety of training, networking and learning opportunities. Between 2,000 and 2,500 scientists, assessors, regulators and managers from academia, business and government, representing an average of 60 countries, provides a unique networking opportunity and a chance for cross-collaboration long after the closing session.

We invite everyone to come visit our booth for a talk, product showcasing or just to say hello.

Our new MicroResp^TM software for automated microplate respirometry handles device communication, calibration, data acquisition, analysis and statistics – all in an intuitive and user-friendly way as shown in this video tutorial:

Feel free to ask us any questions about MicroResp™ or contact us about a quote.

You can find additional videos about our products in our video section.

Our new WitroxCTRL systems allow wireless monitoring, logging and control of water temperature and oxygen saturation in up to 24 independent tanks from a single computer.

The system comes with user-friendly software and all necessary hardware, except for a PC.

Features

•          Fiber optic oxygen sensing technology
•          Manage up to 24 independent tanks
•          WitroxCTRL software with intuitive user interface
•          Easy calibration
•          Choose any measuring unit
•          Create automated protocols (stat, steps, sinusoid, custom control)
•          Unbeaten accuracy and stability of oxygen and temperature sensing
•          Maintenance free operation
•          For use with full strength sea water or freshwater

Visit our website to learn more about the capabilities of the WitroxCTRL system. Feel free to contact us regarding a quote or if you have any questions about our new oxygen and temperature control system.

If you are using a Loligo^® swim tunnel for swim trials only (no O₂ measurements), our new AutoSwim software will automate water velocity control via a wireless Bluetooth device (DAQ-BT).

Our complete systems for swimming performance includes a swim tunnel, our new and user-friendly AutoSwim software and everything needed for automated water velocity control and calibration. Applications include:

• Ucrit tests
• Swimming behavior
• Forced exercise
• Swimming kinematics

As well as experiments requiring accurate and computerized control of activity level/swimming speed.

We offer a variety of mini, large and very large swim tunnels that are suitable for animals ranging in sizes from 1 g – 15 kg, and can withstand water velocities from 0.7 – 200 cm/s.

Feel free to contact us regarding a quote or if you have any questions about our complete systems for swimming performance.