This invasive species poses a threat to recreational and commercial fishing.
But COVID-19 restrictions prevented many of these operations, meaning that the sea lampreys are starting to reestablish themselves across the Great Lakes, including Lake Superior, Lake Michigan and Lake Erie. This is because in 2020, only 25% of streams could be treated, and in 2021, only 75% could be treated.
It might sound like a short period of time, but robust invasive species like sea lampreys often only need a small window of opportunity to regain their stranglehold over vulnerable habitats.
“If you ease up control, even for a short time — like two years in COVID — they’ll take advantage of that,” he told Undark. “It would be Pollyannaish to think there’s not going to be any effect.” But before you panic and envision sea lampreys preying on swimmers, these lampreys mainly pose a danger to fish. They attach to cold-water organisms, not warm-blooded humans.
“One might latch on if the person is really cold or if the lamprey is starving to death,” Cory Brant, a research assistant at Michigan State University, explained to the
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