Ticks are the major vectors of most disease-causing agents to humans, companion animals and wildlife. Moreover, ticks transmit a greater variety of pathogenic agents than any other blood-feeding arthropod. Ticks have been expanding their geographic ranges in recent decades largely due to climate change. Furthermore, tick populations in many areas of their past and even newly established localities have increased in abundance. These dynamic changes present new and increasing severe public health threats to humans, livestock and companion animals in areas where they were previously unknown or were considered to be of minor importance. Here in this review, the geographic status of four representative tick species are discussed in relation to these public health concerns, namely, the American dog tick, , the lone star tick, , the Gulf Coast Tick, and the black-legged tick, . Both biotic and abiotic factors that may influence future range expansion and successful colony formation in new habitats are discussed.
May 21, 2018
Joyce Sakamoto, Assistant Research Professor of Entomology, Pennsylvania State University,
Shelley Whitehead, Doctoral Candidate, Entomology, Pennsylvania State University
A female deer tick on a piece of straw. Steve Ellingson/Shutterstock.comCases of vector-borne disease have more than doubled in the U.S. since 2004, the Centers for Disease Control and Prevention recently reported, with mosquitoes and ticks bearing most of the blame. Mosquitoe...