The invention uses an electric field to keep sharks and rays away from fishermen’s hooks, clearing the way for tuna to be caught instead.
A new gadget takes advantage of sharks’ sixth sense to send the fish scurrying away from deadly hooks.
Whether sharks and rays would be repelled or attracted by the electric fields generated by SharkGuard devices was an open question. The animals use their extra sense when hunting to detect the small electrical fields given off by prey.
Hooks with the electric repellant reduced catch rates of blue sharks by 91 percent compared with standard hooks, dropping from an average of 6.1 blue sharks caught per 1,000 hooks to 0.5 sharks. And 71 percent fewer pelagic stingrays were caught using SharkGuard hooks, going from seven captured rays per 1,000 hooks on average to two rays.
“It’s definitely a notable and significant effect,” says Shiffman, who was not involved with the study. “If [the devices] went into effect across the fishing fleet that interacts with blue sharks, it would certainly be good news for [them].”
Indonesia Berita Terbaru, Indonesia Berita utama
Similar News:Anda juga dapat membaca berita serupa dengan ini yang kami kumpulkan dari sumber berita lain.
Electric pulses drastically cut number of sharks caught by accidentSince 1970, the global abundance of sharks and rays has declined by 71 per cent, partially due to accidental capture in longline fishing hooks. A new device may keep sharks and rays away from hooks by creating an irritating electromagnetic field
Baca lebih lajut »
UTSA routs Rice to earn home field in C-USA title gameFrank Harris ran for three touchdowns as the Roadrunners built a 21-point first-quarter...
Baca lebih lajut »
It’s time to add capacity at Love FieldUnder a compromise reached in 2006 to repeal the Wright Amendment, the assenting parties agreed that the number of gates at Love Field would be limited to 20...
Baca lebih lajut »
TCU Remains Undefeated With Buzzer-Beating Field Goal vs. BaylorNo. 4 TCU survived a scare against Baylor to keep their College Football Playoff hopes alive
Baca lebih lajut »
How Velus Jones Jr. Is Elevating Game to Get Back on Field for BearsAfter two straight inactive Sundays, Velus Jones Jr. is elevating his practice habits to return to the field.
Baca lebih lajut »