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return true" onmouseout="window.status=''; return true">Home</a> > <a href="/Home/Aquatic-Fisheries-Research/Aquatic-Fisheries-Research/" target="_self" onmouseover="window.status='Aquatic &amp; Fisheries Research'; return true" onmouseout="window.status=''; return true">Aquatic &amp; Fisheries Research</a> > <a href="/Home/Aquatic-Fisheries-Research/Fish-and-Marine-Animal-Tagging/" target="_self" onmouseover="window.status='Fish and Marine Animal Tagging'; return true" onmouseout="window.status=''; return true">Fish and Marine Animal Tagging</a> > </div> <p><span class="header1"><font size="2">New approach in fish positioning!</font></span><br /> <span class="header1">- first use of DST GPS fish tags &amp; corresponding GPS Transmitter in a fish study<br /> </span><br /> With the latest technology from Star-Oddi, scientists are able to monitor the GPS location of fish, which will provide them valuable information on fish migration. <br /> <a href="/Home/Aquatic-Fisheries-Research/Products/GPS-Fish-positioning-System/"><img border="0" hspace="5" alt="" vspace="5" align="right" width="150" src="/resources/Images/web/426_JSthingv03.jpg" /></a><br /> The research company Salmon &amp; Trout (<a href="http://www.laxfiskar.is">www.laxfiskar.is</a>), in co-operation with the Marine Research Institute and Star-Oddi, have started a research project where Star-Oddi's new <a href="http://star-oddi.com/products/6/geolocation-fish-tag/default.aspx">DST GPS tags</a> and <a href="/Home/Aquatic-Fisheries-Research/Products/GPS-Fish-positioning-System/GPS-transmitter/">GPS transmitter (Fish Positioning Sounder)</a> play an important role.&nbsp; <br /> <br /> The aim of the study is to map the distribution and behaviour ecology of brown trout (Salmo Trutta) in Lake Thingvallavatn, Iceland's largest natural Lake (84km2).&nbsp; In order to do so, the study includes use of the new DST GPS technology that was <a href="/Home/Aquatic-Fisheries-Research/Products/GPS-Fish-positioning-System/"><img border="0" hspace="5" alt="" vspace="5" align="right" src="/resources/images/web/428_P1010020.jpg" /></a>developed by Star-Oddi in co-operation with Simrad in Norway.&nbsp; The DST GPS fish tags enable sampling of fixed geopositions of the tagged fish parallel to sampling of data on fish depth and corresponding water temperature.&nbsp; <br /> <br /> The geoposition is based on the global positioning system (GPS).&nbsp; The GPS information is received by the GPS transmitter and transmitted into the water.&nbsp; The GPS code is received and recorded into the tag's memory if the tagged fish is within the transmission range of the transmitter.&nbsp; When the fish is recaptured, the data on GPS positions is retrieved from the tag along with data on fish depth and corresponding ambient temperature.&nbsp; <br /> <br /> The small and portable GPS transmitter (Fish Positioning Sounder) from Star-Oddi is used to transmit GPS codes to the tags, where strength of transmission signal can be set up to&nbsp;300 meters.&nbsp; The transmitter can be placed at fixed positions or used on smaller boats, scanning the lake.&nbsp;&nbsp;<br /> &nbsp; <a href="/Home/Aquatic-Fisheries-Research/Products/GPS-Fish-positioning-System/GPS-Fish-Tracking-Case-Studies/"><img border="0" hspace="5" alt="" vspace="5" align="right" src="/resources/images/web/427_ASthingv03.jpg" /></a><br /> On December 22nd 2003, the new DST GPS fish tag technology was formally taken into use when seven large brown trout spawners were tagged with DST GPS.&nbsp; The trouts were up to 6.6 kg in weight and 86 cm in fork length.&nbsp; The fish were tagged in Lake Thingvallavatn by Johannes Sturlaugsson at Salmon &amp; Trout Ltd.&nbsp; The tagged fish were released and exposed to transmittings from the GPS transmitter. The DST GPS taggings are part of the mentioned study that started in 2003, and includes planned annual taggings into 2006.&nbsp; The behaviour and the environment of the trout in Lake Thingvallavatn had already been studied by Sturlaugsson for several years, using traditional DSTs to sample information on the fish depth during the year and the corresponding water temperature.&nbsp; <br /> <br /> In this new study, the DST GPS tags are an important part of the further sampling, as it enables to map the actual distribution of the trout, not the least during their feeding migration phase ranging from spring to autumn.&nbsp; The GPS brown trout study is supported by fundings from the Icelandic Power Company (www.lv.is), the Reykjavik Energy (www.or.is) and the Thingvellir National Park (<a href="http://www.thingvellir.is/">www.thingvellir.is</a>).</p> <p><a href="http://star-oddi.com/products/6/geolocation-fish-tag/default.aspx">See the product overview here</a></p> <p><a href="/Home/Aquatic-Fisheries-Research/Products/GPS-Fish-positioning-System/GPS-Fish-Tracking-Case-Studies/">GPS Case Studies<br /> </a><br /> </p></div> </div> </div> </div> </div> </div> </div> <div class="secondary-content-2"> <div class="extra-info" > <div class="extra-info-t"> <div class="extra-info-b"> <div class="title"><h3>Aquatic & Fisheries Research</h3></div> <div class="sep-info"> <ul class="tree-link"> <li class="level4 first"><a href="/Products/" target="_self" onmouseover="window.status='Products'; return true" onmouseout="window.status=''; return true">Products</a></li> <li class="level4"><a href="/Home/Aquatic-Fisheries-Research/Calibration-Certificate/" target="_self" onmouseover="window.status='Calibration Certificate'; return true" onmouseout="window.status=''; return true">Calibration Certificate</a></li> <li class="level4"><a href="/Home/Aquatic-Fisheries-Research/Fish-and-Marine-Animal-Tagging/" target="_self" onmouseover="window.status='Fish and Marine Animal Tagging'; return true" onmouseout="window.status=''; return true">Fish and Marine Animal Tagging</a></li> <li class="level5"><a href="/Home/Aquatic-Fisheries-Research/Fish-and-Marine-Animal-Tagging/Tagging/" target="_self" onmouseover="window.status='Tagging'; return true" onmouseout="window.status=''; return true">Tagging</a></li> <li class="level5"><a href="/Home/Aquatic-Fisheries-Research/Fish-and-Marine-Animal-Tagging/Archival-tag/" target="_self" onmouseover="window.status='Archival tag'; return true" onmouseout="window.status=''; return true">Archival tag</a></li> <li class="level4"><a href="/Home/Aquatic-Fisheries-Research/Oceanography-Aquaculture/" target="_self" onmouseover="window.status='Oceanography &amp; Aquaculture'; return true" onmouseout="window.status=''; return true">Oceanography &amp; Aquaculture</a></li> <li class="level4"><a href="/Home/Aquatic-Fisheries-Research/Scientific-Papers/" target="_self" onmouseover="window.status='Scientific Papers'; return true" onmouseout="window.status=''; return true">Scientific Papers</a></li> <li class="level4"><a href="/Home/Aquatic-Fisheries-Research/Online-Education/" target="_self" onmouseover="window.status='Online Education'; return true" onmouseout="window.status=''; return true">Online Education</a></li> <li class="level4"><a href="/Order-Now/" target="_self" onmouseover="window.status='Order Now'; return true" onmouseout="window.status=''; return true">Order Now</a></li> </ul> </div> </div> </div> </div></div> </div> </div> </div> <div class="page-b"></div> <div id="footer"> <ul class="contact-info"> <li>Vatnagardar 14</li> <li>104 Reykjavik</li> <li>Iceland</li> <li>Tel: +354 533 6060</li> <li>Fax: +354 533 6069</li> <li><a href="/Contact/">Contact</a></li> </ul> <ul class="links"> <li><a href="/Careers/">Careers</a></li> <li><a href="/Media/">Media</a></li> <li><a href="/Order-Now/Distributors/">Distributors</a></li> <li><a href="/Sitemap/">Sitemap</a></li> </ul> </div> </div> <!-- Yahoo! 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