Seasonal Fluctuation of Phelbotominae (Diptera:Psychodidae) in three Departments of an Endemic Area of Cutaneous Leishmaniasis in Jujuy Province: A Preliminary Report

REMONDEGUI CV; CABRERA CA; QUINTANA MG

Simposio; VIII International Symposium on Phlebotominae Sandflies; 2014

Instituto Nacional de Medicina Tropical, MSN

The endemic area of cutaneous leishmaniasis (CL) in the province of Jujuy includes eight departments. The number of recorded cases of leishmaniasis over the period 1990-2008 allowed ranking the risk areas to contract the disease, placing the area of "Ramal" as the greatest area of effective vector-parasite contact risk, concentrating almost 50% of cases in the Ledesma Department. In 2008 we started systemized studies to determine the presence of sandflies and were recorded specimens of Nyssomyia neivai (Pinto), Migonemyiamigonei (Franca) and complex cortelezzii (Evandromyia cortezzii, Ev. sallesi). The aim of this work was to study the seasonal fluctuation of Phlebotominae species in three departments of the endemic area of the province of Jujuy , specially in sites with epidemiological antecedents. We conducted monthly sampling by 24 months from September 2011 in selected sites of Ledesma, Santa Barbara and San Pedro departments. The captures were made with CDC light traps by two consecutive nights. The specimens captured were clarified and preserved in eugenol until its identification to specific level. A total of 12013 sandflies were captured, a 51.5% corresponded to the Santa Barbara department, the 30.5% to Ledesma department and 18% to San Pedro department. In the three departments were recorded abundance peaks in autumn and spring. Preliminary results obtained in the present work show a increased abundance of sandflies in autumn and spring with a decrease in the abundance in summer and winter. The information resulting from this work on the diversity , abundance and distribution of Phlebotominae in different seasons and types of environments could be useful to detect effective measures aimed at reducing the population of these insects, avoiding the risk of outbreaks.