Latin American Symposium
Latin American Symposium
The hatching of Aedes eggs can be divided into those that hatch immediately after embryonic development and those with a resting period after embryonic development. This period is related to humidity, temperature, amount of light, food, larval density, and water oxygenation. The objective of this work was to evaluate the egg-hatching rate of Ae. aegypti and Ae. albopictus obtained from temporary breeding sites sorted as wet and dry and then compared with eggs collected from ovitraps. A search for temporary household breeding sites was carried out, and concurrently, 250 ovitraps were placed in 125 of the 192 backyards on the site. The identified artificial breeding sites and the positive ovitraps were taken to laboratory conditions to monitor the hatching dynamics. Of the 125 houses, 100% tested positive for Aedes in ovitraps, and 50.4% tested positive for temporary artificial breeding sites. Of the 250 ovitraps placed, 64.4% were positive, and 38% of the artificial breeding sites collected were positive. The production of adult mosquitoes from 7,328 eggs collected in ovitraps was 55.41% for Ae. aegypti and 22.4% for Ae. albopictus. The percentage of adults obtained from artificial breeding sites was 65.39% for Ae. aegypti and 34.61% for Ae. albopictus. In this work, we observed that the hatching percentage for the artificial larval sites was 99.9%. For the ovitraps, it was 77.81%, reflecting the high distribution of mosquitoes associated with artificial containers. Therefore, targeting domestic oviposition and eliminating larval breeding leads to opportunities for better control.