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Friday 30 January 2015

Tiny injectable beeping tags used to track salmon

Each tag is about the length of two grains of rice (Photo: PNNL)


In order to study how young fish such as salmon are affected by swimming through hydroelectric dams, scientists have traditionally equipped them with surgically-implanted acoustic tracking tags. Unfortunately, the implantation procedure can harm the fish, plus the weight of the device can affect their behavior. Now, however, a team at the Pacific Northwest National Laboratory (PNNL) in Washington state has developed a much lighter acoustic tag, that can be injected into fish using a needle. .. Continue Reading Tiny injectable beeping tags used to track salmon



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