Supporting Information s12

1 Supporting Information

2 The effects of mite parasitism on the reproduction and survival of the Taiwan field mice

3 (Apodemus semotus)

4 Jhan-Wei Lin, Hsuan-Yi Lo, Hsi-Chieh Wang and Pei-Jen Lee Shaner*

6 Fig. S1. Estimation of Trombiculid mite abundance on their mouse host Apodemus

7 semotus. (a) The larvae of Trombiculid mites (the white spots) attached themselves to the

8 ear of an mouss. Based on the 2012 survey (June-September, 2012) where a total of 32

9 adult A. semotus were placed under anesthesia for a complete count of the number of

10 mites attached to their ear and genital regions, (b) the mite count positively correlates

11 with mite abundance index (the index has 4 abundance levels: 0 = zero mite, 1 = 1-9

12 mites, 2 = 10-19 mites, 3 = 20 mites or more). (c) The frequency distribution of the mite

13 counts from the 2012 survey indicates 91% (29 out of 32) of the mice had a mite count

14 between 0 and 29 (0, 1-9, 10-19, 20-29), suggesting the mite abundance index captured

15 most of the variation in mite count. 16 17 Table S1. The generalized linear mixed model of Apodemus semotus reproduction as a

18 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

19 The reproduction is trated as a binomial variable (whether a male has descended testicles

20 or a female has perforated vagina, is pregnant or lactating). This analysis included 36

21 unique individuals (24 males and 12 females) that were known to have survived at least 4

22 months as adults from the 2010-2011 survey. All individuals were first captured as adults,

23 meaning they were at least one month old. Therefore, we assigned age = 1 month upon

24 their first capture, and age = 3 months and 5 months upon their next 2 consecutive

25 recaptures.