Abstract
Systems that take discrete samples of the catch while trawling are widely used in fisheries investigations. We have developed the Minisampler, a relatively small system to be used particularly on small vessels and small trawls. The device is simple, has low weight and is reasonably cheap to make. The Minisampler consists of a tele-command deck unit, a dunking transducer, a stainless steel frame and one or two acoustical trigger-units. Each of them releases a metal bar that opens/closes a collecting bag. Thus is possible to take two or three remotely controlled discrete samples during a tow. We tested the system successfully in a flume tank and during sea trials from a commercial trawler. The Minisampler is a multi-purpose tool and provides opportunity for new experimental designs to improve scientific work using demersal or pelagic trawls in marine or freshwater environments.
Originalsprog | Engelsk |
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Tidsskrift | Fisheries Research |
Vol/bind | 123-124 |
Sider (fra-til) | 16-20 |
Antal sider | 5 |
ISSN | 0165-7836 |
DOI | |
Status | Udgivet - 1 jul. 2012 |
Udgivet eksternt | Ja |