This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the April 2018 issue of Canadian Cattlemen magazine and is reprinted on the BCRC Blog with permission of the publisher.
Cattle won’t be the only creatures enjoying fresh pasture this spring; so will the Rocky Mountain wood tick and the American dog tick, which can transmit anaplasmosis and other bloodborne diseases. Anaplasmosis was removed from the Federally Reportable Disease list in 2014, so the government is no longer responsible for dealing with anaplasmosis outbreaks or compensating producers with affected herds. Understanding where these ticks are and what influences their population will help develop proactive strategies to avoid the spread of tickborne disease.
Ticks have a three-stage life cycle. Tick larvae emerge from the egg and feed once on blood from small mammals (mice, voles, squirrels, etc.). The engorged larvae then molt into nymphs that also feed once on small mammals. The engorged nymphs molt into adults that feed on larger animals, including dogs, sheep, deer, and cattle. If the adult ticks cannot find a host, they may overwinter under plant material on the ground and re-emerge in spring. Adult ticks begin Continue reading