INVESTIGADORES
MANGUDO Carolina
artículos
Título:
Aedes aegypti USES WATER HOLDING TREE HOLES AS LARVAL HABITAT IN ORÁN, SALTA PROVINCE
Autor/es:
CAROLINA MANGUDO; JUAN PABLO APARICIO; RAQUEL GLEISER
Revista:
BIOCELL
Editorial:
INST HISTOL EMBRIOL-CONICET
Referencias:
Año: 2011 vol. 35 p. 251 - 251
ISSN:
0327-9545
Resumen:
Aedes aegypti L. is the main vector of dengue worldwide. Periodic outbreaks of dengue are recorded in Argentina, and Salta is one of the most affected provinces. Since there are no available vaccines, prevention is based mostly on vector control. Larval habitats of this mosquito in South America are mainly artificial containers. Recently larvae and pupae were reported in tree holes in Aguaray, Salta province. Knowledge of the use of natural containers by Ae. aegypti is relevant from an epidemiological and vector control point of view, and also for a better understanding of biological invasions because it is an exotic species. Trees (1185) in public areas of Orán city were surveyed between January and April 2011. Tree species, presence and characteristics of tree holes were recorded. Every three weeks holes were visited, presence and volume of water were recorded, and larvae and pupae were collected with an aspirator. 3.46% of the trees had water holding holes; 73.1% of them had larvae, mostly (98.44%) Ae. aegypti. The average number of larvae (L) per hole was 60(range 1-578), and 25% of the holes had 50 or more larvae. Average density was 8 L/10ml (range 0.36-595); density of 38% of the positive samples was 5 or more L/10ml. The trees where larvae were more frequently found were Delonix regia, Bauhinia sp. and  Jacaranda sp. Water holding tree holes should be taken into account as larval habitat or re-infestation sources during vector surveillance and for vector control activities.