Table 1.
Host and parasite data.
| Yokohama | Yokosuka | ||||||
| Host data | |||||||
| Sex | M | F | M | F | |||
| No. of examaind | 12 | 11 | 15 | 14 | |||
| Mean HBL (mm) (min-max) |
231.08 (213–246) | 235.82 (228–243) | 232.13 (209–248) | 231.07 (214–246) | |||
| Mean BW (g) (min-max) |
356.67 (300–420) | 370.00 (310–410) | 306.67 (240–360) | 310.71 (220–400) | |||
| Mean BCI (g) (min-max) |
0.54 (-38.06–31.11) | 0.82 (-43.05–33.71) | 1.00 (-53.36–32.76) | 0.76 (-44.30–43.07) | |||
| Parasite infection |
Origin |
||||||
| Acari | |||||||
| Haemaphysalis flava | Native | ||||||
| Nymph | Prevalence (%) | 0 | 0 | 2 (13.33) | 4 (28.57) | ||
| No. of recovered | – | – | 2 | 5 | |||
| Mean abundance (max) | – | – | 0.13 (1) | 0.36 (2) | |||
| Larva | Prevalence (%) | 0 | 0 | 2 (13.33) | 1 (7.14) | ||
| No. of recovered | – | – | 2 | 1 | |||
| Mean abundance (max) | – | – | 0.13 (1) | 0.07 (1) | |||
| Total | Prevalence (%) | 0 | 0 | 3 (20.00) | 5 (35.71) | ||
| No. of recovered | – | – | 4 | 6 | |||
| Mean abundance (max) | – | – | 0.27 (2) | 0.43 (2) | |||
| Leptotrombidium spp. | Unidentified | ||||||
| Larva | Prevalence (%) | 0 | 0 | 6 (40.00) | 4 (28.57) | ||
| No. of recovered | – | – | 53 | 94 | |||
| Mean abundance (max) | – | – | 3.53 (22) | 6.71 (91) | |||
| Anoplura | |||||||
| Enderleinellus kumadai | Exotic* | ||||||
| Adult | Prevalence (%) | 9 (75.00) | 2 (18.18) | 11 (73.33) | 2 (14.29) | ||
| No. of recovered | 287 | 2 | 87 | 19 | |||
| Mean abundance (max) | 23.92 (172) | 0.18 (1) | 5.80 (26) | 1.36 (14) | |||
| Larva | Prevalence (%) | 4 (33.33) | 0 | 10 (66.67) | 2 (14.29) | ||
| No. of recovered | 135 | – | 49 | 3 | |||
| Mean abundance (max) | 11.25 (106) | – | 3.27 (27) | 0.21 (2) | |||
| Total | Prevalence (%) | 9 (75.00) | 2 (18.18) | 12 (80.00) | 2 (14.29) | ||
| No. of recovered | 422 | 2 | 136 | 22 | |||
| Mean abundance (max) | 35.17 (278) | 0.18 (1) | 9.07 (53) | 1.57 (16) | |||
| Neohaematopinus callosciuri | Exotic | ||||||
| Adult | Prevalence (%) | 9 (75.00) | 2 (18.18) | 14 (93.33) | 8 (57.14) | ||
| No. of recovered | 111 | 5 | 149 | 105 | |||
| Mean abundance (max) | 9.25 (43) | 0.45 (3) | 9.93 (29) | 7.50 (40) | |||
| Larva | Prevalence (%) | 11 (91.67) | 4 (36.36) | 15 (100.00) | 11 (78.57) | ||
| No. of recovered | 260 | 5 | 415 | 200 | |||
| Mean abundance (max) | 21.67 (80) | 0.45 (2) | 27.67 (92) | 14.29 (52) | |||
| Total | Prevalence (%) | 11 (91.67) | 4 (36.36) | 15 (100.00) | 11 (78.57) | ||
| No. of recovered | 371 | 10 | 564 | 305 | |||
| Mean abundance (max) | 30.92 (96) | 0.91 (4) | 37.60 (119) | 21.79 (92) | |||
| Siphonaptera | |||||||
| Ceratophyllus anisus | Native | ||||||
| Adult | Prevalence (%) | 0 | 1 (9.09) | 8 (53.33) | 5 (35.71) | ||
| No. of recovered | – | 1 | 12 | 12 | |||
| Mean abundance (max) | – | 0.09 (1) | 0.80 (3) | 0.86 (4) | |||
| Ceratophyllus indages indages | Native | ||||||
| Adult | Prevalence (%) | 0 | 0 | 6 (40.00) | 5 (35.71) | ||
| No. of recovered | – | – | 16 | 15 | |||
| Mean abundance (max) | – | – | 1.07 (8) | 1.07 (8) | |||
*This species is first described from an introduced specimen of the Pallas's squirrel in Japan (Kaneko, 1954), but its presence has subsequently been confirmed from the squirrels inhabiting in the native habitats of Thailand (Johnson, 1959).