Espécies de Phlebotominae (Diptera: Psychodidae) da Fazenda São José, Município de Carmo, Estado do Rio de Janeiro, Brasil

Abstract

In this research, the flebotomineos of ecology and biology aspects of Fazenda São Jose, district of Carmo, situated 118km from the capital of Rio de Janeiro State were studied. The place, which worked as logistic support for the implementation of this research, was the house where the autochthonous human case of Cutaneous Leishmaniasis occurred. During two years (1994/1995; 2006/2007), monthly captures were carried out in the areas of collection: domiciliary, peridomiciliary and in the forest, with capture of Castro, torch and bright trap, falcon model and CDC, placed in the peridomiciliary and in the forest. There were 5814 flebotomíneos from sixteen species of the Lutzomyia genus were captured and identified: Lutzomyia intermedia (Lutz & Neiva, 1912), L. whitmani (Antunes & Coutinho, 1939), L. migonei (França, 1920), L. ayrozai (Barretto & Coutinho, 1940) L. davisi (Root, 1934), L. carrerai carrerai (Barretto, 1966), L. lenti (Mangabeira, 1938), L. cortelezzii (Brèthes, 1923), L. sordellii (Shannon & Del Ponte, 1927), L. quinquefer (Dyar, 1929), L. lanei (Barretto & Coutinho, 1941), L. fischeri (Pinto, 1926), L. monticola (Costa Lima, 1932), L. lutziana (Costa Lima, 1932), L. aragaoi (Costa Lima, 1932), L. sp and five species of Brumptomyia França & Parrot, 1921: B. brumpti (Larrouse, 1920), B. cardosoi (Barretto & Coutinho, 1941a), B. avellari (Costa Lima, 1932), B. guimaraensis (Coutinho & Barretto, 1941a), B. nitzulescui (Costa Lima, 1932). Lutzomyia intermedia were predominant (97,7 %), with high frequency between 6 p.m. and 8 p.m.. After that, the influence of seasonality and the lunar cycle in the fauna studied were evaluated, which made it clear that L. intermedia was predominant in all the seasons of the year and in the different phases of the moon, being more significant the average found in summer and winter. In the analysis of the phases of the moon, full and new presented relevant results, when it was collected a considerable amount of species in the second phase (2006/2007). Time frequency, types and places of collection were analysed. It was then shown the strong presence, even though irregular, of L. intermedia in two sites researched (intra and peridomiciliar) in which expressive results were found. The most frequent time averages of L. interemedia occurred in 1994, but there was a bigger wealth of fauna and vector species of Leishmania, in 2006. It was made clear that the variety of these species had been the consequence of environmental changes presented between the periods studied. It should be highlighted the predominant presence of L.intermedia inside residences, yet it should be mentioned the high number of masculine samples collected. It was proved that L. intermedia is completed adapted to the environment modified by man. Studies show that L. intermedia is involved in the cycle of transmission of the ethiological agent of the American Cutaneous Leishmaniasis in that place.