Mapping the main Leishmania phlebotomine vector in the endemic focus of the Mt. Vesuvius in southern Italy

Erika Rossi, Laura Rinaldi, Vincenzo Musella, Vincenzo Veneziano, Sabrina Carbone, Luigi Gradoni, Giuseppe Cringoli, Michele Maroli
  • Erika Rossi
    Dipartimento MIPI, Istituto Superiore di Sanità, Rome, Italy
  • Laura Rinaldi
    Dipartimento di Patologia e Sanità Animale, Università degli Studi di Napoli “Federico II”, Naples, Italy
  • Vincenzo Musella
    Dipartimento di Patologia e Sanità Animale, Università degli Studi di Napoli “Federico II”, Naples, Italy
  • Vincenzo Veneziano
    Dipartimento di Patologia e Sanità Animale, Università degli Studi di Napoli “Federico II”, Naples, Italy
  • Sabrina Carbone
    Dipartimento di Patologia e Sanità Animale, Università degli Studi di Napoli “Federico II”, Naples, Italy
  • Luigi Gradoni
    Dipartimento MIPI, Istituto Superiore di Sanità, Rome, Italy
  • Giuseppe Cringoli
    Dipartimento MIPI, Istituto Superiore di Sanità, Rome, Italy
  • Michele Maroli
    Dipartimento di Patologia e Sanità Animale, Università degli Studi di Napoli “Federico II”, Naples, Italy | michele.maroli@iss.it

Abstract

Geographical information systems and remote sensing were used to analyze the distribution of the Leishmania infantum-Phlebotomus perniciosus parasite-vector system in relation to environmental features of two opposite sides (coastal and Apennine) of Mt. Vesuvius, an area of intense transmission of human and canine leishmaniasis in southern Italy. Weekly phlebotomine collections were carried out during two consecutive warm seasons (2004- 2005) in 24 and 25 sites of the coastal and Apennine sides, respectively. Sandflies were caught using over one-thousand and seven hundred 20 x 20 cm-sticky traps placed in different environments. A total of 873 sandflies were collected, of which 284 (32.5%) were identified as P. perniciosus. The cumulative density (number of specimens/m2 of sticky trap/two nights) of this vector species was 3.9. P. perniciosus was significantly more abundant in the coastal side (5.8) as compared to the Apennine side (1.4). The main environmental differences between the two sides were the aspect (south-west for the coastal and north-east for the Apennine side) and land use. The predominance of green vegetated environments (forest, semi-natural and agricultural areas) in the coastal side, in contrast with the predominance of artificial surfaces (namely urban environment) in the Apennine side, could be responsible for the different P. perniciosus densities between the two surveyed areas.

Keywords

Phlebotomus perniciosus, sandflies, geographical information systems, leishmaniasis, Mt. Vesuvius, Italy.

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Submitted: 2014-12-23 12:55:54
Published: 2007-05-01 00:00:00
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Copyright (c) 2007 Erika Rossi, Laura Rinaldi, Vincenzo Musella, Vincenzo Veneziano, Sabrina Carbone, Luigi Gradoni, Giuseppe Cringoli, Michele Maroli

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