Table 5.
Pearson's linear correlation analysis between infestations of R. brunneusculus with five main chigger species and climatic factors (temperature, humidity and rainfall) in 12 months at Jingha village in southern Yunnan of China (April 2016–March 2017).
| species | Infestation index | Coefficient of Pearson's correlation: r (P) |
||
|---|---|---|---|---|
| Total rainfall (mm) | Average temperature (°C) | Average humidity (%) | ||
| W. (W.) micropelta | Cr | −0.002 (0.995) | 0.354 (0.258) | −0.594* (0.042) |
| PM | 0.373 (0.233) | 0.502 (0.096) | −0.201 (0.530) | |
| MA | 0.101 (0.754) | 0.442 (0.151) | −0.541 (0.069) | |
| MI | 0.062 (0.847) | 0.417 (0.177) | −0.559 (0.059) | |
| A. indica | Cr | 0.802** (0.002) | 0.503 (0.096) | 0.309 (0.329) |
| PM | 0.776** (0.003) | 0.490 (0.105) | 0.432 (0.161) | |
| MA | 0.815** (0.001) | 0.528 (0.078) | 0.315 (0.319) | |
| MI | 0.812** (0.001) | 0.579* (0.049) | 0.250 (0.432) | |
| L. (L.) deliense | Cr | 0.519 (0.084) | 0.267 (0.402) | 0.512 (0.089) |
| PM | 0.508 (0.092) | 0.400 (0.198) | 0.475 (0.118) | |
| MA | 0.562 (0.057) | 0.318 (0.314) | 0.492 (0.104) | |
| MI | 0.557 (0.060) | 0.339 (0.281) | 0.467 (0.126) | |
| W. (W.) turmalis | Cr | 0.194 (0.546) | 0.611* (0.035) | −0.327 (0.299) |
| PM | 0.285 (0.370) | 0.691* (0.013) | −0.253 (0.428) | |
| MA | 0.246 (0.441) | 0.669* (0.017) | −0.301 (0.342) | |
| MI | 0.207 (0.519) | 0.640* (0.025) | −0.324 (0.305) | |
| L. (L.) scutellare | Cr | −0.563 (0.057) | −0.733** (0.007) | −0.223 (0.487) |
| PM | −0.596* (0.041) | −0.734** (0.007) | −0.195 (0.543) | |
| MA | −0.562 (0.057) | −0.725** (0.008) | −0.231 (0.470) | |
| MI | −0.646 (0.084) | −0.804* (0.016) | −0.117 (0.783) | |
Annotation: The figures in the Table represent the coefficients of Pearson's correlation (r), and the figures in the brackets stand for the probability of significance (P). *The correlation coefficients are of significance at 0.05 level (double tails). **The correlation coefficients are of significance at 0.01 level (double tails).