Lugging around a tapeworm that’s one-third your body weight can be a real drag. So threespine stickleback fish evolved resistance to tapeworms — but resistance has costs of its own, a team of ...

SEATTLE — Researchers say cleanup of Lake Washington in the late 1960s forced a little fish into reverse evolution. A study led by Seattle’s Fred Hutchinson Cancer Research Center compared samples of ...

Certain populations of threespine stickleback fish have evolved over time to resist tapeworms found in freshwater lakes, but this resistance comes at a cost. Biological Sciences Asst. Prof. Natalie ...

SEATTLE – Evolution is supposed to inch forward over eons, but sometimes, at least in the case of a little fish called the threespine stickleback, the process can go in relative warp-speed reverse, ...