Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Tracking Fish Easier, Quicker, Safer with New Injectable Device

30.01.2015

Beeping tag gathers data to help make dams more fish-friendly

Fish no longer need to go under the knife to help researchers understand exactly how they swim through hydroelectric dams, thanks to a new injectable tracking device described today in the journal Scientific Reports.


Pacific Northwest National Laboratory

Pacific Northwest National Laboratory’s new injectable acoustic fish-tracking tag is so small it can be inserted into a fish with a syringe. The new tag is three times lighter than earlier versions, making it safer for fish and able to more accurately record fish passage through dams.

The new injectable acoustic fish tag allows researchers to safely and quickly insert the small device into young fish with a syringe similar to those used to treat humans. Injecting the tag, instead of surgically inserting it as earlier versions required, is less invasive and enables fish to heal faster, which can also provide more reliable information about fish behavior.

“Our new tag essentially allows fish to undergo a quick outpatient procedure,” said Zhiqun “Daniel” Deng, a scientist at the Department of Energy’s Pacific Northwest National Laboratory. “Tags have been used to track and evaluate fish movement for decades, but this is the first acoustic transmitter that can be inserted with a simple needle injection.”

... more about:
»Fish »JSATS »Laboratory »PNNL »Tracking »acoustic »juvenile

Salmon sound system

PNNL began developing its Juvenile Salmon Acoustic Telemetry System, also known as JSATS, in 2001 at the request of the U.S. Army Corps of Engineers’ Portland District, which operates several dams in the Pacific Northwest. That system – which includes tags, sound receivers and software – was initially designed to provide a more accurate picture of how young salmon migrate from their birthplace in Columbia River Basin waters to the open Pacific Ocean. The system’s use has since expanded to other fish species, for a variety of waterpower structures, and beyond the Northwest, including in California, Australia and Brazil.

Tags release quiet beeps that are picked up by receivers placed in rivers, lakes and other water bodies as tagged fish swim by. Receiver data helps researchers map out the precise 3-D location of each fish and determine if fish are injured during their travels. That information can help make dams more fish-friendly by revising their operations or altering their physical structure. Hundreds of thousands of young fish have been studied with JSATS tags over the years.

Though the earlier JSATS tag provided a very detailed picture of fish migration, researchers worried that the mere presence of their tag – which was about three times heavier in 2007 than today’s injectable tag – could alter fish behavior and make tag-gathered data less reliable for small fish. The earlier tags were also large enough to require surgery, with technicians creating a small incision into each anesthetized fish, manually inserting tags and hand-stitching incisions closed. Studies showed surgically tagged fish might not behave the same as untagged fish if the ratio of the tag weight to fish weight is too big. As a result, PNNL staff worked to make a progressively smaller and lighter tag, with the eventual goal of being able to inject their tag with a syringe.

"Minimizing the impact dams have on fish requires us to study and understand how changes at dams affect their behavior and survival. A critical assumption of any research is that the animals being studied represent their entire population," said M. Brad Eppard, a fisheries biologist with the Portland District of the U.S. Army Corps of Engineers and a co-author on the paper. "The new injectable tag helps us ensure the individual fish we study represent the fish in the Federal Columbia River Power System by allowing smaller-sized fish to be tagged."

Tricked-out tags

PNNL’s new injectable tag is about as big as two grains of rice placed next to each other lengthwise. It weighs just 217 milligrams when dry, is 15 millimeters long and 3.38 millimeters in diameter. Half of the cylindrical tag contains a tiny 3-volt battery. The other half consists of a miniature circuit board and a transducer, which makes the tag’s beeping noise. New features include the addition of a temperature sensor and the ability to adjust sound levels, release two unique tracking codes alternatively, and program the tag to be silent for a pre-determined amount of time.

The injectable tag can intermittently beep as often as every 0.4 seconds, or less frequently, depending on a study’s particular needs. Thanks to the new tag’s powerful battery, lab tests showed the tag can release sound for an average of 120 days when beeps are sent every three seconds. In comparison, PNNL’s previous tag only lasted 23 days under the same conditions.

Inserting the new tag into fish also takes substantially less time than the previous version. Injecting the tag with a syringe takes just 20 seconds, while the old tag’s surgery required at least two minutes. The shorter period reduces the cost of fish-tagging studies, as the manual labor of handling fish and inserting tags is the most expensive part of these studies.

Fishing for the right size

During the summer of 2013, about 700 juvenile salmon implanted with the injectable tag were released in the Snake River in Washington state. Initial results indicated survival was higher in fish carrying the injectable tag than those with the older tag. Research is ongoing to fully evaluate how the tags affect fish and to determine the smallest fish that is suitable for safe injectable tagging.

PNNL intends to transfer the new injectable tag to a commercial vendor that will independently manufacture and sell it. Discussions are ongoing with several companies that have expressed interest in licensing the technology.

Deng and his team are continually working to improve their fish tag. An even smaller tag is being developed for juvenile eels and lamprey, and a longer-lasting tag was made for juvenile sturgeon last year.

REFERENCE: Z.D. Deng, T.J. Carlson, H. Li, J. Xiao, M.J. Myjak, J.Lu, J.J. Martinez, C.M. Woodley, M.A. Weiland, M.B. Eppard, “An injectable acoustic transmitter for juvenile salmon,” Scientific Reports, Jan. 29, 2015, DOI: 10.1038/srep08111, http://www.nature.com/srep/2015/150129/srep08111/full/srep08111.html 

Interdisciplinary teams at Pacific Northwest National Laboratory address many of America's most pressing issues in energy, the environment and national security through advances in basic and applied science. Founded in 1965, PNNL employs 4,300 staff and has an annual budget of more than $1 billion. It is managed by Battelle for the U.S. Department of Energy's Office of Science. As the single largest supporter of basic research in the physical sciences in the United States, the Office of Science is working to address some of the most pressing challenges of our time. For more information on PNNL, visit the PNNL News Center, or follow PNNL on Facebook, Google+, LinkedIn and Twitter.

Contact Information
Franny White
PIO
frances.white@pnnl.gov
Phone: 509-375-6904
Mobile: 360-333-4793

Franny White | newswise

Further reports about: Fish JSATS Laboratory PNNL Tracking acoustic juvenile

More articles from Interdisciplinary Research:

nachricht Lego-like wall produces acoustic holograms
17.10.2016 | Duke University

nachricht New evidence on terrestrial and oceanic responses to climate change over last millennium
11.10.2016 | University of Granada

All articles from Interdisciplinary Research >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>