Apparent survival of Apodemus semotus as a function of mite abundance. All trapping sessions (December 2010, February, April, June, and August 2011) are pooled. The males and females are estimated separately as well as combined. The apparent survival is the probability that an individual survived a 2-month period and remained at the study site. The mite abundance is categorized into four levels (0 mite, 1 to 9 mites, 10 to 19 mites, and 20 mites or more. The error bars denote 1 SE. Different letters denote significant differences in apparent survival.