Phlebotomines
0 Followers
Recent papers in Phlebotomines
The aim of this study was to describe the phlebotomine sand fly fauna and its respective ecological indexes in risk zones of cutaneous leishmaniasis (CL). The study was carried out in the Municipality of Santarém, Pará State, Brazil. From... more
The aim of this study was to describe the phlebotomine sand fly fauna and its respective ecological indexes in risk zones of cutaneous leishmaniasis (CL). The study was carried out in the Municipality of Santarém, Pará State, Brazil. From the total of 102 records of CL patients in 2010 and 2011, infected with different Leishmania species, 31 were selected. Kernel density analysis was performed. CDC light traps were placed (6 p.m.–6 a.m., three nights, height of 1.5 m) in the identified risk zones (indoors, chicken sheds and surrounding forest) in two occasions: rainy and dry seasons of 2012. Shannon traps were installed in the forest during 3 h (7 p.m.–9 p.m., one night). Shannon (H'), Pielou (J') and Dominance (D) indexes were calculated and two spatial clusters (SC) of CL, SC1 (urban-rural) and SC2 (rural farm), were identified. Phlebotomines were sampled in SC1 (243) and SC2 (174). In the whole sample (417) there were 24 species of 10 genera, but only 12 species were found in both risk zones. Ecological indexes varied widely (H' = 0.5–1.72; J = 0.44–0.78; D = 0.46–0.91). The highest D values in the forest (≥ 0.75) were associated to Psychodopygus complexus during both seasons in SC1 and Psychodopygus davisi during the rainy season in SC2. Other CL vectors were identified in smaller frequence. A great diversity of phlebotomine species was described in each risk zone. The CL vectors sampled were well-matched with the Leishmania species infecting the patients. The epidemiological importance of dominant species may vary with climatic seasons and risk zones in Santarém.
Background: Mato Grosso do Sul has been undergoing a process of urbanization which results in loss of native vegetation. This withdrawal makes vectors of man and domestic animals closer, causing changes in the epidemiology of diseases... more
Background: Mato Grosso do Sul has been undergoing a process of urbanization which results in loss of native
vegetation. This withdrawal makes vectors of man and domestic animals closer, causing changes in the
epidemiology of diseases such as American Visceral Leishmaniasis. The aim of the study was to evaluate the
phlebotomine fauna and environmental issues related to the transmission of AVL in Ponta Porã, Mato Grosso do
Sul, between 2009 and 2010.
Methods: Vegetation of the urban area was evaluated by Normalized Difference Vegetation Index (NDVI),
Normalized Difference Water Index (NDWI) and Soil Adjusted Vegetation Index (SAVI).
Results: The results showed that the phlebotomine fauna of the city consists of five species, especially Lutzomyia
longipalpis (Lutz and Neiva, 1912), the vector of Leishmania (Leishmania) infantum. Predominance of males was
observed. The insects were captured in greater quantity in the intradomicile. Lu. longipalpis was the most frequent
and abundant species, present throughout the year, with a peak population after the rainy season. Vectors can be
found in high amounts in forest and disturbed environments.
Conclusions: The finding of Lu. longipalpis in regions with little vegetation and humidity suggests that the species
is adapted to different sorts of environmental conditions, demonstrating its close association with man and the
environment it inhabits. The tourist feature of Ponta Porã reinforces its epidemiological importance as a vulnerable
city. The geographical location, bordering Paraguay through dry border, makes possible the existence of a corridor
of vectors and infected dogs between the two countries.
Keywords: Border area, Geotechnology, Phlebotomines
vegetation. This withdrawal makes vectors of man and domestic animals closer, causing changes in the
epidemiology of diseases such as American Visceral Leishmaniasis. The aim of the study was to evaluate the
phlebotomine fauna and environmental issues related to the transmission of AVL in Ponta Porã, Mato Grosso do
Sul, between 2009 and 2010.
Methods: Vegetation of the urban area was evaluated by Normalized Difference Vegetation Index (NDVI),
Normalized Difference Water Index (NDWI) and Soil Adjusted Vegetation Index (SAVI).
Results: The results showed that the phlebotomine fauna of the city consists of five species, especially Lutzomyia
longipalpis (Lutz and Neiva, 1912), the vector of Leishmania (Leishmania) infantum. Predominance of males was
observed. The insects were captured in greater quantity in the intradomicile. Lu. longipalpis was the most frequent
and abundant species, present throughout the year, with a peak population after the rainy season. Vectors can be
found in high amounts in forest and disturbed environments.
Conclusions: The finding of Lu. longipalpis in regions with little vegetation and humidity suggests that the species
is adapted to different sorts of environmental conditions, demonstrating its close association with man and the
environment it inhabits. The tourist feature of Ponta Porã reinforces its epidemiological importance as a vulnerable
city. The geographical location, bordering Paraguay through dry border, makes possible the existence of a corridor
of vectors and infected dogs between the two countries.
Keywords: Border area, Geotechnology, Phlebotomines