A new lizard parasite is the first known to move from mom to baby

The worm turns up in the mom’s ovaries and the embryo’s braincase of a common wall lizard

Podarcis muralis

A common wall lizard (Podarcis muralis), like this one captured in the wild, can harbor parasites that move across generations, from mother to baby lizards, researchers have found.

N. Feiner/Lund University

For Nathalie Feiner, it was just another day in the lab. As part of her work on understanding how the common wall lizard is adapting to a changing climate, the evolutionary biologist was observing one of its eggs under a microscope when she caught a strange sight.