Nonlethal parasites reduce how much their wild hosts eat, leading to ecosystem effects (Links to an external site)

A caribou browsing

Deer, caribou, bison and other similar animals are often infected by a range of internal parasites, including worms called helminths. Although many of these infections are not lethal, they can still impact health or animal behavior. A new study led by Washington University in St. Louis senior scientist, Amanda Koltz, uses a mathematical model and a global meta-analysis to highlight the cascading consequences of common parasitic infections in wild animals on terrestrial ecosystems. This work was funded by a LEC Seed grant.

Sicker livestock may increase climate woes (Links to an external site)

Climate change is affecting the spread and severity of infectious diseases around the world. The research, led by Vanessa Ezenwa, a professor of ecology at the University of Georgia, and funded by the Living Earth Collaborative at Washington University in St. Louis, describes how parasites can cause animals to produce more methane, a powerful greenhouse gas.