Supporting Information
The effects of mite parasitism on the reproduction and survival of the Taiwan field mice (Apodemus semotus)
Jhan-Wei Lin, Hsuan-Yi Lo, Hsi-Chieh Wang and Pei-Jen Lee Shaner*
Fig. S1. Estimation of Trombiculid mite abundance on their mouse host Apodemus semotus. (a) The larvae of Trombiculid mites (the white spots) attached themselves to the ear of an mouss. Based on the 2012 survey (June-September, 2012) where a total of 32 adult A. semotus were placed under anesthesia for a complete count of the number of mites attached to their ear and genital regions, (b) the mite count positively correlates with mite abundance index (the index has 4 abundance levels: 0 = zero mite, 1 = 1-9 mites, 2 = 10-19 mites, 3 = 20 mites or more). (c) The frequency distribution of the mite counts from the 2012 survey indicates 91% (29 out of 32) of the mice had a mite count between 0 and 29 (0, 1-9, 10-19, 20-29), suggesting the mite abundance index captured most of the variation in mite count.
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Table S1. The generalized linear mixed model of Apodemus semotus reproduction as a function of sex and age.
Effect Num DF Den DF F P
Sex 1 95 0.25 0.62
Age 2 95 0.52 0.60
Sex × age 2 95 0.52 0.60
The reproduction is trated as a binomial variable (whether a male has descended testicles or a female has perforated vagina, is pregnant or lactating). This analysis included 36 unique individuals (24 males and 12 females) that were known to have survived at least 4 months as adults from the 2010-2011 survey. All individuals were first captured as adults, meaning they were at least one month old. Therefore, we assigned age = 1 month upon their first capture, and age = 3 months and 5 months upon their next 2 consecutive recaptures. 17 18 19 20 21 22 23 24 25
