Friday November 4, 2022

Science Daily

In the U.S. Geological Survey’s Non-Indigenous Aquatic Species database, these so-called “native transplant” fish are almost twice as common as fish introduced from outside the country. But a new University of Illinois review says native transplant fish, especially those that don’t qualify as game fish, are rarely studied and their impacts poorly understood.

“We are trying to circle a certain type of biological invasion as uniquely neglected for study and attention over time. It leaves us with some blind spots about whether these fish are having impacts, and if they’re causing harm that’s going undocumented,” says Eric Larson, associate professor in the Department of Natural Resources and Environmental Sciences at Illinois and senior author on the review in Fisheries.

Larson and lead author Jordan Hartman scoured the scientific literature to document studies on non-game native transplant (NGNT) fish. Of 220 NGNT fishes the authors identified as established in the U.S., only 51 have been studied at all. And researchers have investigated impacts in just 30 of them.

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