Pike eat more as water warms, threatening native species

Rising temperatures in a Southcentral Alaska river have led to a hungrier population of invasive northern pike, a trend that could imperil native salmon and other fish species. A University of Alaska Fairbanks-led research team analyzed the stomach contents of northern pike caught by the U.S. Fish and Wildlife Service in the Deshka River during the summers of 2021 and 2022. The team compared the contents to samples from pike collected a decade earlier.