Spatial and temporal distribution of spinose ear ticks, Otobius megnini, at the Fossil Rim Wildlife Center

Ticks are a major concern among managers of captive-bred wild animals because they are vectors for a variety of disease and can result in significant economic losses. Spinose ear tick, (SET) Otobius megnini, Dugès, are of particular concern because heavy infestations can result in reduced body weight, decreased milk production, lower reproduction rates, poor overall thrift, and death; yet, little is known about the ecology of this species. The spatial and temporal distribution of SET abundance was studied in anthropogenic and native habitats at Fossil Rim Wildlife Center, Somervell County, Texas. Compressed CO₂ was utilized to collect tick larvae in four habitats (sheds, woodlands, grasslands and hay piles) bi-weekly during April-December 2012. Abundance of SET larvae peaked in mid-May, whereas, peak hard-tick abundance occurred in late July. All species of ticks were most abundant in animal sheds and less abundant in woodland, grasslands, and hay piles. This research will provide FRWC and other wildlife conservation facilities with information to develop management plans to control SET in the environment.