Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Applying research agendas to sport fishing

05.06.2015

As one of the most highly prized game fish in the upper Midwest, muskellunge (also known as muskies) and northern pike help support a $20 billion sport fishing industry. Facing declines in natural reproduction, a team of scientists, including a Michigan State University inland fisheries researcher, has developed a list of research and management needs to help keep the fish -- and the industry -- thriving.

'Muskies and northern pike are the largest predatory fishes in this region, making them high-profile fisheries,' explained Joe Nohner, doctoral student in fisheries at the MSU Center for Systems Integration and Sustainability. 'By supporting strong pike and muskellunge populations, we can provide better fishing opportunities and a strong recreational fishing industry.'


Two adult muskie engage in their courtship dance in a northern Wisconsin lake.

Courtesy of Joe Nohner/ MSU Center for Systems Integration and Sustainability

Working with scientists from across the region, Nohner helped prioritize research and management needs for muskie and northern pike, including:

  • Identifying and conserving the fishes' spawning habitats
  • Improving knowledge and management of the effects of fishing on trophy-sized fish
  • Understanding how stocking and fishing influence the genetic makeup of these fish populations

According to Nohner, most of the past research and management programs have focused on adult fish and protection from overfishing. While managers and anglers focus on adult fish populations, some fisheries have been undercut by declining natural reproduction. Fish populations have been kept up through stocking, so in many areas the fishery isn't self-sustaining.

'We believe we need a more holistic approach to managing these fishes,' Nohner said. 'We want to include genetics, habitat needs at all life stages, and include the effects of humans in the equation. It's somewhat daunting, but new technologies will help us meet the challenge.'

Nohner has started tackling part of the challenge himself, creating a computer mapping technique to predict the location of muskie spawning habitats.

By studying 28 lakes in northern Wisconsin, he and his colleague found that muskies preferred spawning in bays with moderately sloping lake bottoms and that the fish also preferred not to spawn along shorelines with houses or other development.

'Lakes with more development are less likely to be muskie spawning habitats,' Nohner said. 'Fisheries managers, county commissioners and lakeshore property owners may have to consider where development is located and how that will affect the fish.

'We found that muskie spawning site selection may be more complex than previously thought,' he continued. 'There is not just one particular characteristic that makes the fish gravitate to an area for spawning. There seem to be several factors that affect the location, which is why we need a modelling program to help identify those critical habitats.'

###

The paper 'Muskellunge and northern pike ecology and management: important issues and research needs' is published in the June issue of Fisheries. Besides Nohner, other authors are Derek Crane, John Farrell and Kevin Kapuscinski, of the State University of New York-Syracuse; Loren Miller, of the Minnesota Department of Natural Resources; James Diana, of the University of Michigan; and John Casselman, of Queen's University.

The paper 'Muskellunge spawning site selection in northern Wisconsin and a GIS-based predictive model' is published in the February issue of the North American journal of Fisheries Management. Nohner and Diana are the authors. The research was funded by the Wisconsin Department of Natural Resources, the Musky Clubs Alliance of Wisconsin, the University of Michigan and the Alvan Macauley Fellowship.

The Center for Systems Integration and Sustainability integrates ecology with socioeconomics, demography and other disciplines to conduct cutting-edge research on ecological sustainability on local, national and global scales.

Media Contact

Sue Nichols
nichols@msu.edu
517-432-0206

 @MSUnews

http://msutoday.msu.edu/journalists/

Sue Nichols | EurekAlert!

More articles from Agricultural and Forestry Science:

nachricht Light green plants save nitrogen without sacrificing photosynthetic efficiency
21.11.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign

nachricht Filling intercropping info gap
16.11.2017 | American Society of Agronomy

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

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

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Underwater acoustic localization of marine mammals and vehicles

23.11.2017 | Information Technology

Enhancing the quantum sensing capabilities of diamond

23.11.2017 | Physics and Astronomy

Meadows beat out shrubs when it comes to storing carbon

23.11.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>