Table 1.
Estimation of the number of roaming dogs in selected model and non-model villages, Jiading district, Shanghai, using sight-resight and questionnaire methods.
| Township | Village | Dog count from sight-resight | Estimated number of roaming dog population from sight-resighta with 95% confidence interval | Household questionnaire survey | Estimated number of roaming dogs from questionnaire | |||
|---|---|---|---|---|---|---|---|---|
|
Day 1 (n1) |
Day 2 (n2) |
Resighted (m2) | Number of unchained dogs | Number of stray dogs | ||||
| Xuhang | Anxin | 7 | 5 | 2 | 15 [6, 24] | 14 | 0 | 14 |
| Fuhu* | 88 | 106 | 56 | 166 [148, 184] | 131 | 2 | 133 | |
| Industrial zones | Zhaoting | 9 | 12 | 4 | 25 [13, 37] | 16 | 3 | 19 |
| Loutang* | 15 | 12 | 5 | 34 [19, 49] | 35 | 1 | 36 | |
| Waigang | Zhoujing | 43 | 52 | 24 | 92 [75, 109] | 77 | 0 | 77 |
| Wangxin* | 18 | 16 | 8 | 35 [24, 46] | 18 | 12 | 30 | |
| Total | 180 | 203 | 99 | 367 [333, 401] | 291 | 18 | 309 | |
*
Non-model village.
a
Estimated roaming dog population from sight-resight was calculated from the aforementioned formula in the text.
Detection probability = m2/n1 = 55%.