Table 1.
Abundance of Ae. aegypti immatures in Mérida City by type of urban environment, from November 2011 to June 2013.
| Urban environment class | No. site visits | Containers | Total no. Ae. aegypti collected | Entomological indices | ||||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Total no. examined | No. (%)with water | Larvae | Pupae | % site visits with collection of Ae. aegypti immatures | % water-filled containers with Ae. aegypti immatures present | Pupal index (%)b | ||
| Residential premises | 156 | 1,920 | 383 (19.9) | 9,129 | 1,201 | 35.9 | 23.0 | 57.9 |
| Vacant lots | 50 | 1,060 | 337 (31.8) | 17,734 | 800 | 74.0 | 24.3 | 64.6 |
| Streets/sidewalksa | 28 | 84 | 24 (28.6) | 1,369 | 109 | 28.6 | 45.8 | 63.6 |
| Parking lots | 18 | 168 | 33 (19.6) | 6,799 | 159 | 61.1 | 33.3 | 63.6 |
| GRAND TOTAL | 252 | 3,232 | 777 (24.0) | 35,031 | 2,269 | |||
a
Including collections from various containers (primarily disposable containers, tires, and buckets) found on streets or sidewalks but not from stormwater drains and catch basins.
b
Percentage of containers with Ae. aegypti pupae present out of all containers with Ae. aegypti immatures present.