Silent research vessels are not quiet
The aim is to avoid scaring off fish and thus biasing results from stock abundance surveys. However, comparative studies carried out by IMR show that the silent vessel “G.O. Sars” initiates stronger and more prolonged avoidance reactions in herring than a standard vessel.
These results, published by Ona et al. in the journal Acoustical Society of America earlier this week, illustrate the complexity of vessel avoidance behaviour. They also suggest that a stimulus other than noise must be causing the reaction.
This leads Ona and his co-authors to conclude that: “as long as influential candidate stimuli for fish avoidance remain obscure, the ICES goal of establishing a stealth vessel design appears unrealistic.”
Media Contact
More Information:
http://www.imr.no/english/news/2007/silent_vesselsAll latest news from the category: Life Sciences and Chemistry
Articles and reports from the Life Sciences and chemistry area deal with applied and basic research into modern biology, chemistry and human medicine.
Valuable information can be found on a range of life sciences fields including bacteriology, biochemistry, bionics, bioinformatics, biophysics, biotechnology, genetics, geobotany, human biology, marine biology, microbiology, molecular biology, cellular biology, zoology, bioinorganic chemistry, microchemistry and environmental chemistry.
Newest articles
Lighting up the future
New multidisciplinary research from the University of St Andrews could lead to more efficient televisions, computer screens and lighting. Researchers at the Organic Semiconductor Centre in the School of Physics and…
Researchers crack sugarcane’s complex genetic code
Sweet success: Scientists created a highly accurate reference genome for one of the most important modern crops and found a rare example of how genes confer disease resistance in plants….
Evolution of the most powerful ocean current on Earth
The Antarctic Circumpolar Current plays an important part in global overturning circulation, the exchange of heat and CO2 between the ocean and atmosphere, and the stability of Antarctica’s ice sheets….