Table 4. Per mosquito biting rate estimation for Ae. aegypti using data from Scott et al [12].
The data represent engorged mosquitoes captured on a single day (595 of 1,300 from Thailand and 548 of 1,156 from Puerto Rico). These mosquitoes were grouped into those in which the histology analysis indicated the mosquito bit one, two or three times. The total number of bites that occurred on the day of capture were tallied (Column 2).
| Number of mosquito bites on day of capture |
Human-bites per day* | Notes | |
|---|---|---|---|
| Thailand | (95% of all bites) | ||
| Mosquitoes that bit once (255) | 255 | 242.25 | All bites on the day of capture. |
| Mosquitoes that bit twice (310) | 511.5 | 485.93 | 65% (= 201.5) of double biters took both bites on the day of capture and so we count 2 bites for these mosquitoes; the remaining 35% (=108.5) took only the last bite on the day of capture and so we count 1 bite for these mosquitoes. |
| Mosquitoes that bit three times (30) | 53.4 | 50.73 | 78% (=23.4) of triple biters took their last two bites on the same day, (here, the day of capture), and so we count 2 bites for these mosquitoes; the remaining 22% (= 6.6) took only the last bite (3rd) on the day of capture and so we count 1 bite for these mosquitoes. |
| Total | 819.9 | 778.91 |
|
| Average biting per mosquito per day = (778.91 /1,300) x 69% = 0.41 | |||
| Puerto Rico | (97% of all bites) | ||
| Mosquitoes that bit once (293) | 293 | 284.21 | All bites on the day of capture. |
| Mosquitoes that bit twice (244) | 348.92 | 338.45 | 43% (= 104.92) of double biters took their last two bites on the same day, (here, the day of capture), and so we count 2 bites for these mosquitoes; 57% (=139.08) took only the last bite on the day of capture and so we count 1 bite for these mosquitoes. |
| Mosquitoes that bit three times (11) | 20.02 | 19.42 | 82% (= 9.02) of these triple biters took two bites on the day of capture and so we count 2 bites for these mosquitoes; the remaining 18% (= 1.98) took only the last bite (3rd) on the day of capture and so we count 1 bite for these mosquitoes. |
| Total | 661.94 | 642.08 | |
| Average biting per mosquito per day = (642.08 /1,156) x 63% = 0.35 | |||
* Human-bites per day (3rd column) is 95% and 97% of the number of mosquito bites on day of capture (2nd column) for Thailand and Puerto Rico, respectively. i.e., for Thailand, 3rd column = 95% of the 2nd column and for Puerto Rico, 3rd column = 97% of the 2nd column.