Experts track razor predators as it runs through the state’s hidden passages – this is the way local economy
The tour reports that Alaska’s pristine waterways have long been a shelter for local fish – but now, there are unexpected threats hidden in these waters, silently destroying the balance passed down from generation to generation.
What happened?
Alaska’s waterways are attacked by accidental invaders: North Pike.
This razor-tooth predator is secretly moving between freshwater ecosystems, destroying native fish populations. Scientists have discovered that Parker can now travel through brackish water, breaking previous assumptions about his movement.
The researchers first tracked the fish’s movement by analyzing strontium in the otolith, an approach that provides undisputed evidence of migration. As the study’s lead author Matthew Wooler explains, “Strontium changes depending on geology and location. If Parker moves between watersheds, you can pick it up by analyzing the mass of the twill in the otolith.”
Why is North Pike related?
The invasion of North Pike threatens Alaska’s exquisite aquatic ecosystem.
Since the 1950s, these fish have illegally occupied 150 different water bodies, targeting juvenile salmon and trout. They were introduced by people seeking more opportunities for sports fishing, but the consequences were devastating. As the trip wrote, North Pike’s expansion “has made fish native to the region”, which could have a huge impact on the local fishing and seafood restaurant industry.
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Chinook salmon, salmon and rainbow trout populations have dropped sharply. These native fish are swallowed before adulthood, which may push them to extinction. Northern Pike consumed juvenile fish so quickly that the entire generation was in danger.
“These populations never have a chance to increase because many people never become adults,” a serious concern about the freshwater ecosystem and the local economy. ”
What is North Pike doing?
Sports and fish in Alaska are fighting back. Using methods such as Gill Net, it has successfully removed North Pike from more than 25 waterways, although Gill Net is known to harm other species.
One commenter proposed an innovative approach: “The combination of cash incentives for fishermen and other programs” can help offset costs and engage in the community.
But there are still challenges. Chemical treatment is limited because concerns about drinking water seem almost impossible. These predators are still in 150 locations where they live, and the time for native fish in Alaska is running out.
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