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re: Latest info from telemetry study shows how speckled trout use Lake Pontchartrain
Posted on 3/27/14 at 4:43 pm to TheGreat318
Posted on 3/27/14 at 4:43 pm to TheGreat318
Doesn't make sense to me. If the fish were released in the fall of 2013, how do they know most left by late spring? Seems they would have to wait until spring of 2014.
2
Posted on 3/27/14 at 4:46 pm to Nawlens Gator
There is a link in the OP that helps explain...
quote:
As part of the study, Melancon and her team surgically implant transmitters into live speckled trout before releasing them back into the lake. They tagged 40 fish in November 2012, another 39 in May 2013 and 71 last fall.
They hope to tag another 50 the week of April 21, which will be the final tagging event of the study.
Posted on 3/27/14 at 4:51 pm to Nawlens Gator
quote:
how do they know most left by late spring?
They likely have stationary receivers in the passes that record when a tag passes by. So, if they record a lot of their tagged fish going by at a certain time, they can estimate that the fish move out in the spring. Also, there are mobile receiver units that they can use in a boat and potential track down tagged fish.
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