Likewise, UC biologists found that genes related to immunity were activated by starvation, which could be another survival mechanism. Animals that feed on blood must have a immune system capable of fighting bacteria and other microorganisms. By activating genes associated with immunity, ticks might be preparing for an imminent meal.
More strangely, UC biologists found that genes associated with a starved tick’s salivary glands were activated. Saliva is known to help ticks drink more blood more quickly, a useful ability when you’re clinging precariously to a moving animal in thick brush. The sticky saliva also helps cement the tick to the host.
“The more they were starved, the more they were priming themselves for that next blood meal,” Rosendale said.
The project demonstrates the value UC places on research in its strategic direction, Next Lives Here.
The study was funded by the U.S. Department of Agriculture, UC’s Faculty Development Research Grant and the National Science Foundation. UC graduate Megan Dunlevy and Marshall McCue of the metabolic measurement firm Sable Systems International contributed to the study.