How to track a shark: New research reveals where, why and how sharks and game fish overlap umassamherst
An international team of researchers, led by the University of Massachusetts Amherst, has compiled a massive dataset that overlays years' worth of information on the position, migration and interaction of sharks and game fish. This research has immediate relevance for anglers, who have been reporting increased contact with sharks over the years.
"It's so rare to observe multi-species interaction in the ocean," says Lucas Griffin, the paper's co-lead author and a postdoctoral researcher inat UMass Amherst. That's because species such as the ones the researchers focused on—great hammerhead and bull sharks, permit and Atlantic tarpon—can range over hundreds of square miles of open ocean.
For this study, the researchers focused on the coastal regions of the Florida Keys. Over a three-year period, the collaborative team deployed nearly 300 acoustic receivers and tagged 257 fish with transmitters. Every time one of the tagged sharks or fish swam within range of the receiver, its presence was recorded and tagged with the date and time.
France Dernières Nouvelles, France Actualités
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