Table 2. Chigger infestation rates and population diversity of mites recovered from small mammals, Thailand.
| Host Species | No. of small mammals collected (% of total) | Small mammals infested with mite | No. of mites collected (% of total) | Chigger index (average no. mites/animal) | Mite genera (% of total) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| (% infestation) | Ascoschoengastia | Blankaartia | Eutrombicula | Gahrliepia | Leptotrombidium | Lorillatum | Schoengastia | ||||
| Tak | 91 (33.1) | 30 (33.0) | 654 (15.3) | 7.2 | 127 (3.0) | 0 | 0 | 522 (12.2) | 5 (0.1) | 0 | 0 |
| Bandicota indica | 26 (28.6) | 22 (84.6) | 386 (9.0) | 14.8 | 32 (0.8) | 0 | 0 | 353 (8.3) | 1 (0) | 0 | 0 |
| Mus caroli | 42 (46.2) | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Mus cervicolor | 14 (15.4) | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Berylmys berdmorei | 1 (1.1) | 1 (100) | 28 (0.7) | 28.0 | 28 (0.7) | 0 | 0 | 0 | 0 | 0 | 0 |
| Rattus exulans | 1 (1.1) | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rattus mackenziei | 1 (1.1) | 1 (100) | 2 (0.1) | 2.0 | 0 | 0 | 0 | 2 (0.1) | 0 | 0 | 0 |
| R. rattus complex | 6 (6.6) | 6 (100) | 238 (5.6) | 39.7 | 67 (1.6) | 0 | 0 | 167 (3.9) | 4 (0.1) | 0 | 0 |
| Loei | 14 (5.1) | 12 (85.7) | 150 (3.5) | 10.7 | 68 (1.6) | 0 | 0 | 81 (1.9) | 1 (0) | 0 | 0 |
| Rattus bukit | 4 (28.6) | 4 (100) | 42 (1.0) | 10.5 | 2 (0.1) | 0 | 0 | 39 (0.9) | 1 (0) | 0 | 0 |
| R. rattus complex | 9 (64.3) | 8 (88.9) | 108 (2.5) | 12.0 | 66 (1.5) | 0 | 0 | 42 (1.0) | 0 | 0 | 0 |
| Tupaia glis | 1 (7.1) | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sisaket | 29 (10.5) | 19 (65.5) | 613 (14.3) | 21.1 | 344 (8.0) | 0 | 0 | 156 (3.6) | 0 | 113 (2.6) | 0 |
| Crocidura horsfieldii | 1 (3.5) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Berylmys berdmorei | 1 (3.5) | 1 (100) | 18 (0.4) | 18 | 1 (0) | 0 | 0 | 7 (0.2) | 0 | 10 (0.2) | 0 |
| Rattus bukit | 4 (13.8) | 4 (100) | 41 (1.0) | 10.3 | 0 | 0 | 0 | 38 (0.9) | 0 | 3 (0.1) | 0 |
| Rattus exulans | 5 (17.2) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| R. rattus complex | 10 (34.5) | 10 (100) | 531 (12.4) | 53.1 | 334 (7.8) | 0 | 0 | 99 (2.3) | 0 | 98 (2.3) | 0 |
| Rattus surifer | 8 (27.6) | 4 (50.0) | 23 (0.5) | 2.9 | 9 (0.2) | 0 | 0 | 12 (0.3) | 0 | 2 (0.1) | 0 |
| Chumphon | 75 (27.3) | 65 (86.7) | 1,605 (37.5) | 21.4 | 325 (7.6) | 32 (0.8) | 0 | 114 (2.7) | 1,124 (26.3) | 0 | 10 (0.2) |
| Bandicota indica | 18 (24.0) | 15 (83.3) | 299 (7.0) | 16.6 | 2 (0.1) | 32 (0.8) | 0 | 55 (1.3) | 200 (4.7) | 0 | 10 (0.2) |
| R. rattus complex | 49 (65.3) | 44 (89.8) | 1135 (26.5) | 23.2 | 319 (7.5) | 0 | 0 | 58 (1.4) | 758 (17.7) | 0 | 0 |
| Rattus sabanus | 1 (1.3) | 1 (100) | 9 (0.2) | 9.0 | 4 (0.1) | 0 | 0 | 1 (0) | 4 (0.1) | 0 | 0 |
| Tupaia glis | 7 (9.3) | 5 (71.4) | 162 (3.8) | 23.1 | 0 | 0 | 0 | 0 | 162 (3.8) | 0 | 0 |
| Phang Nga | 66 (24.0) | 50 (75.8) | 1,259 (29.4) | 19.1 | 8 (0.2) | 29 (0.7) | 9 (0.2) | 170 (4.0) | 972 (22.7) | 46 (1.1) | 25 (0.6) |
| Bandicota indica | 10 (15.2) | 8 (80.0) | 302 (7.1) | 30.2 | 0 | 24 (0.6) | 0 | 5 (0.1) | 268 (6.3) | 4 (0.1) | 1 (0) |
| Chiropodomys gliroides | 1 (1.5) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Menetes berdmorei | 3 (4.6) | 2 (66.7) | 20 (0.5) | 6.7 | 0 | 4 (0.1) | 4 (0.1) | 0 | 12 (0.3) | 0 | 0 |
| Rattus bukit | 4 (6.1) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rattus muelleri | 2 (3.0) | 1 (50.0) | 13 (0.3) | 6.5 | 0 | 0 | 1 (0) | 0 | 12 (0.3) | 0 | 0 |
| R. rattus complex | 39 (59.1) | 33 (84.6) | 819 (19.1) | 21 | 8 (0.2) | 1 (0) | 0 | 163 (3.8) | 581 (13.6) | 42 (1.0) | 24 (0.6) |
| Rattus sabanus | 2 (3.0) | 2 (100) | 44 (1.0) | 22.0 | 0 | 0 | 0 | 0 | 44 (1.0) | 0 | 0 |
| Tupaia glis | 5 (7.6) | 4 (80.0) | 61 (1.4) | 12.2 | 0 | 0 | 4 (0.1) | 2 (0.1) | 55 (1.3) | 0 | 0 |
| Total | 275 | 176 (64.0) | 4,281 | 15.6 | 872 (20.4) | 61 (1.4) | 9 (0.2) | 1,043 (24.4) | 2,102 (49.1) | 159 (3.7) | 35 (0.8) |