Revista Costarricense de Salud Pública
Print version ISSN 1409-1429
CALDERON ARGUEDAS, Olger; TROYO, Adriana and AVENDANO, Adrián. Animal bladders as oviposition and breeding sites por flies after festivities in Heredia, Costa Rica. Rev. costarric. salud pública [online]. 2008, vol.17, n.33, pp. 15-18. ISSN 1409-1429.
A study of the number of animal bladders dispersed in 15 blocks in the urban core of Barva- Heredia was performed following the masquerades, a traditional celebration during the festivities of the city. Additionally, an evaluation of the eggs, larvae and adult flies was performed in two bladders that were discarded in public areas, which were free from soil, fluids, or other debris. In total, 29 bladders were counted. They were located on power lines (55,2%), sidewalks (27,6%), drainages (6,9%) and roofs (3,4%). The flies observed corresponded to the families Calliphoridae (Cochliomyia macellaria, Lucilia eximia, Phaenicia cuprina, Chrysomyia megacephala), Sarcophagidae (Sarcophaga sp.), Muscidae (Musca domestica), and Phoridae. The average of eggs and larvae per bladder was 176 and 44, respectively. Results show that fresh bladders are an efficient bait for flies of medical importance. In this sense, there is a need to identify treatment methods for the bladders in order to guarantee sustainability of the radition, without the contamination of the urban environment.
Keywords : Flies; Public Health; Calliphoridae; Sarcophagidae; Phoridae; Barva; masquerades.