Yes, I saw that episode as I am an avid Jeopardy watcher.
According to the articles below, Western Fence Lizards contain a protein that kill the bacteria:
The most fascinating and beneficial interaction shared with S. occidentalis is that of the common tick. Ticks are a known carrier of Lyme disease which is very dangerous to humans, other animals, and forests. Amazingly, when ticks feed on the Western Fence Lizard, a protein in the lizard’s blood kills the Lyme disease bacteria, hindering any further opportunity of that tick to spread the disease. This phenomenon is statistically proven based on rates of infected human’s with Lyme disease. In regions where Sceloporus occidentalis is very abundant, such as California, rates of the disease are drastically lower than regions without the lizard, like Northeastern United States (Swei et al, 2011a).
bioweb.uwlax.edu/bio203/f2013/hopkins_cien/interactions.htmwww.anapsid.org/lyme/sceloporus.htmlI honestly don't know if I believe that California really has lower rates of lyme disease?
Denise