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 ...

A tiny, scaleless, freshwater fish, the highly endangered unarmored threespine stickleback is a fierce protector of its nest, which it defends by dashing forward with gaping mouth and “hackles” raised ...

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 ...

A recent study of the threespine stickleback (Gasterosteus aculeatus) brings new light to studies of the early stages of sex chromosome evolution. The linkage to the Y chromosome of genes advantageous ...

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, ...

The threespine stickleback, a small fish found throughout the coastal areas of the Northern Hemisphere, is famously variable in appearance from one location to another, making it an ideal subject for ...