An international group of scientists is to work with anglers to study how invasive fish species affect local fish populations.
“One of the aspects we plan to investigate is whether recreational fishing can act as protection for local populations of salmon and trout,” says project coordinator Professor Jörgen Johnsson of the Department of Biological and Environmental Sciences, University of Gothenburg.
Around 10% of people in Sweden carry out some form of recreational fishing, making it one of the most popular leisure activities in the country. Such fishing is important also from an economic point of view, with an annual turnover of approximately SEK 2.5 billion.
A group of scientists from Sweden, Norway, Germany, France and Canada is to study the biological invasion of salmonids in Europe in the recently started European project SalmoInvade. The project will run for three years and will evaluate the effects of non-native salmon species in Europe, and study the social, economic and ecological mechanisms that affect their ability to invade.
Anglers throughout Europe are associated with the project, which will also study cultural differences between Scandinavia and continental Europe in the way salmonids are viewed as a resource. The project is multidisciplinary and the composition of the research group has thus been designed to provide biological, sociological and psychological expertise.
Scientists in the SalmoInvade project are also planning to investigate whether escaped or released farmed fish can out-compete native populations of salmonids. Farmed fish have been genetically modified and they often have the property of eating a lot and eating rapidly. This may lead to less food being available for the native population.
“Scientists would like to determine the conditions in which the farmed fish will out-compete the wild population. This is one of the issues we are going to study,” says Jörgen Johnsson.
Anglers often prefer the fish to be large, and this may help to protect wild salmon, for example where rapidly growing farmed fish are found together with a wild population. In addition, farmed fish often behave less circumspectly than wild fish, and probably end up getting caught more often.
says Jörgen Johnsson. Angling clubs throughout Europe are taking part in the project, including Sportfiskarna Region Väst at Delsjön in Gothenburg.
“The experiments in Gothenburg will actively involve anglers from western Sweden, and we plan to use their special knowledge. This is a unique collaboration and we are eagerly looking forward to it,” says Jörgen Johnsson
The goal of SalmoInvade is to develop policy guidelines for the management of invasions of salmonids in Europe.
Professor Jörgen Johnsson, Department of Biological and Environmental Sciences, University of Gothenburg.
Tel.: +46 31 786 3665, Mobile: +46 73 778 0375
Carina Eliasson | idw - Informationsdienst Wissenschaft
Environmental DNA uncovers biodiversity in rivers
30.08.2016 | Universität Zürich
New approach for environmental test on livestock drugs
27.07.2016 | Universität Zürich
Scientists and engineers striving to create the next machine-age marvel--whether it be a more aerodynamic rocket, a faster race car, or a higher-efficiency jet...
Waveguides are widely used for filtering, confining, guiding, coupling or splitting beams of visible light. However, creating waveguides that could do the same for X-rays has posed tremendous challenges in fabrication, so they are still only in an early stage of development.
In the latest issue of Acta Crystallographica Section A: Foundations and Advances , Sarah Hoffmann-Urlaub and Tim Salditt report the fabrication and testing of...
Electrochemists at TU Graz have managed to use monocrystalline semiconductor silicon as an active storage electrode in lithium batteries. This enables an integrated power supply to be made for microchips with a rechargeable battery.
Small electrical gadgets, such as mobile phones, tablets or notebooks, are indispensable accompaniments of everyday life. Integrated circuits in the interiors...
Recent findings indicating the possible discovery of a previously unknown subatomic particle may be evidence of a fifth fundamental force of nature, according...
A nanocrystalline material that rapidly makes white light out of blue light has been developed by KAUST researchers.
25.08.2016 | Event News
24.08.2016 | Event News
12.08.2016 | Event News
30.08.2016 | Power and Electrical Engineering
30.08.2016 | Life Sciences
30.08.2016 | Life Sciences