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posted by hubie on Thursday November 17, @09:12PM   Printer-friendly

Conservation efforts and fishery management have allowed tuna and billfish to recover:

After decades of population declines, the future is looking brighter for several tuna and billfish species, such as southern bluefin tuna, black marlins and swordfish, thanks to years of successful fisheries management and conservation actions. But some sharks that live in these fishes' open water habitats are still in trouble, new research suggests.

These sharks, including oceanic whitetips and porbeagles, are often caught by accident within tuna and billfish fisheries. And a lack of dedicated management of these species has meant their chances of extinction continue to rise, researchers report in the Nov. 11 Science.

[...] The team found that the extinction risk for tunas and billfishes increased throughout the last half of the 20th century, with the trend reversing for tunas starting in the 1990s and billfishes in the 2010s. These shifts are tied to known reductions in fishing deaths for these species that occurred at the same time.

[...] But shark species are floundering in these very same waters where tuna and billfish are fished, where the sharks are often caught as bycatch.

[...] "While we are increasingly sustainably managing the commercially important, valuable target species of tunas and billfishes," says Juan-Jordá, "shark populations continue to decline, therefore, the risk of extinction has continued to increase."

Some solutions going forward, says Juan-Jordá, include catch limits for some species and establishing sustainability goals within tuna and billfish fisheries beyond just the targeted species, addressing the issue of sharks that are incidentally caught. And it's important to see if measures taken to reduce shark bycatch deaths are actually effective, she says.

"There is a clear need for significant improvement in shark-focused management, and organizations responsible for their management need to act quickly before it is too late," Simpfendorfer says.


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  • (Score: 0) by Anonymous Coward on Thursday November 17, @09:13PM (2 children)

    by Anonymous Coward on Thursday November 17, @09:13PM (#1280249)

    Swimming in the ocean will be safer.

    • (Score: 0) by Anonymous Coward on Thursday November 17, @10:09PM

      by Anonymous Coward on Thursday November 17, @10:09PM (#1280258)

      Maybe. But in a survival of the fittest way, maybe the dwindling remaining sharks will be the stronger more aggressive ones? Maybe it's me but it seems like there are more shark attacks lately.

    • (Score: 2) by DannyB on Thursday November 17, @11:51PM

      by DannyB (5839) Subscriber Badge on Thursday November 17, @11:51PM (#1280269) Journal

      Swimming in the ocean will be safer.

      Robot sharks will have colorful safety LEDs. So people can know to avoid them.

      --
      If I had π $ for every time I had to write 2π, I'd be irrationally rich.
  • (Score: 0) by Anonymous Coward on Thursday November 17, @10:47PM (5 children)

    by Anonymous Coward on Thursday November 17, @10:47PM (#1280261)

    seriously?

  • (Score: 2) by EJ on Friday November 18, @12:18AM (1 child)

    by EJ (2452) on Friday November 18, @12:18AM (#1280272)

    How will we fund new businesses for inventors?

    • (Score: 2) by oumuamua on Saturday November 19, @01:09AM

      by oumuamua (8401) on Saturday November 19, @01:09AM (#1280426)

      That is a Great idea:
      If your company uses an endangered species in any product, logo, tagline or slogan then your company must donate 0.5% of profits every year towards saving that species.

  • (Score: 1, Insightful) by Anonymous Coward on Friday November 18, @03:48AM

    by Anonymous Coward on Friday November 18, @03:48AM (#1280291)

    In other news, the aquatic laser mount market is crashing.

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