Lutzomyia longipalpis spatial distribution and association with environmental variables in an urban focus of visceral leishmaniasis, Misiones, Argentina

Fernández, María Soledad; Salomón, Oscar Daniel; Cavia, Regino; Pérez, Adriana; Acardi, Soraya Alejandra; Guccione, José Daniel

doi:10.1016/j.actatropica.2010.01.008

Cited by 53 publications

(97 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recent studies have suggested that the distribution of Lu. longipalpis is heterogeneous and distributed in "source populations" (Salomón et al 2004) scattered throughout a city in a pattern of high abundance areas (HAA) across a matrix of low abundance areas (LAA), which is consistent with a metapopulation structure (Fernández et al 2010).…”

mentioning

confidence: 70%

“…The sites were selected according to the 11 HAAs and the matrix of LAAs previously described by Fernández et al (2010). From each of the 11 HAA patches and 11 LAA patches, three-10 randomly selected houses were sampled according to the logistic and demographic opportunities.…”

Section: Methodsmentioning

confidence: 99%

“…longipalpis abundance, such as those associated with unplanned urbanisation and high population densities, as well as other sociodemographic factors (Grimaldi & Tesh 1993, Oliveira et al 2006a, Mestre & Fontes 2007, Rangel & Vilela 2008, Fernández et al 2010, Saraiva et al 2011. Henhouses, chickens and other domestic animals, fruit trees, tree coverage, poor sanitation and a low socioeconomic level have also been associated with sandfly colonisation and the abundance of breeding sites (Sherlock 1996, Alexander et al 2002, Costa et al 2005, Oliveira et al 2003, 2006b, Fernández et al 2010). Al- Key words: Lutzomyia longipalpis -visceral leishmaniasis -spatial variation though there has been a recent focus on urban VL in South America, there is little information regarding the influence of spatial variables at different scales together with environmental and climatic variables on the population of Lu.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales

Santini

Fernández

Pérez

et al. 2012

Mem. Inst. Oswaldo Cruz

Self Cite

View full text Add to dashboard Cite

The distribution of Lutzomyia longipalpis is heterogeneous with a pattern of high abundance areas (HAAs) embedded in a matrix of low abundance areas (LAAs). The objective of this study was to describe the variability in the abundance of Lu. longipalpis at two different spatial levels and to analyse the relationship between the abundance and multiple environmental variables. Of the environmental variables analysed in each household, the condition that best explained the differences in vector abundance between HAA-LAA was the variable "land_grass", with greater average values in the peridomestic environments within the LAA, and the variables "#sp tree", "#pots" and "dist_water" that were higher in the HAA. Of the environmental variables analysed in the patches, the variable "unpaved_streets" was higher in the LAAs and the variable "prop_inf_dogs" was higher in the HAAs. An understanding of the main environmental variables that influence the vector distribution could contribute to the development of strategies for the prevention and control of visceral leishmaniasis (VL). This is the first work in which environmental variables are analysed at the micro-scale in urban areas at the southern edge of the current range of Lu. longipalpis. Our results represent a significant contribution to the understanding of the abundance of the vector in the peridomestic habitats of the region

show abstract

mentioning

confidence: 70%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales

Santini

Fernández

Pérez

et al. 2012

Mem. Inst. Oswaldo Cruz

Self Cite

View full text Add to dashboard Cite

show abstract

“…longipalpis has proved to be spatially heterogeneous, as shown by the main vector prediction model of WOOLHOUSE et al (1997) 25 , and micro scale spatial heterogeneous data for other VL urban areas in America 5 , where a similarity in the proportion of VL vectors in positive households in cities registering an established colonization of approximately 31% has also been found. The sex ratio showed a greater proportion of Lu.…”

Section: Discussionmentioning

confidence: 99%

“…Abundance of Lu. longipalpis was classified using operative criteria, as has also been done in other urban areas 5 , as follows: none, with no Lu. longipalpis; low, ranging from 1-29 specimens; moderate, ranging from 30-59 specimens; and high, over 60 specimens.…”

Section: Area Of Studymentioning

confidence: 99%

Spatial Distribution of Phlebotominae in Puerto Iguazu-Misiones, Argentina-Brazil-Paraguay Border Area

Santini

Gould

Acosta

et al. 2013

Rev. Inst. Med. trop. S. Paulo

View full text Add to dashboard Cite

SUMMARY The first Argentinian autochthonous human case of visceral leishmaniasis (VL) was confirmed in Posadas (Misiones) in 2006. Since then, the disease has increased its incidence and geographical distribution. In the 2006-2012 period, 107 human cases were detected (11 deaths). The presence of Lutzomyia longipalpis was detected in peridomiciles in Puerto Iguazú urban area in 2010; some of these findings were associated with households where cases of canine VL had already been reported. The objective of this study was to ascertain the abundance and spatial distribution of Lu. longipalpis in Puerto Iguazú City, on the Argentina-Brazil-Paraguay border. Lu. longipalpis proved to be exclusively urban and was found in 31% of the households sampled (n = 53), 67% of which belonged to areas of low abundance, 20% to areas of moderate abundance and 13% to areas of high abundance. Nyssomyia whitmani was the only species found both in urban and peri-urban environments, and Migonemyia migonei was registered only on the outskirts of the city. Due to the fact that Puerto Iguazú is considered to be at moderate risk at the moment, it is necessary to intensify human and canine case controls, as well as take integrated prevention and control measures regarding the environment, vectors and reservoirs on the Argentina-Brazil-Paraguay border area.

show abstract

The Social and Environmental Determinants of the Leishmaniases in the Americas

Salomón

Werneck

2022

Infectious Tropical Diseases and One Health in Latin America

View full text Add to dashboard Cite

Lutzomyia longipalpis spatial distribution and association with environmental variables in an urban focus of visceral leishmaniasis, Misiones, Argentina

Cited by 53 publications

References 37 publications

Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales

Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales

Spatial Distribution of Phlebotominae in Puerto Iguazu-Misiones, Argentina-Brazil-Paraguay Border Area

The Social and Environmental Determinants of the Leishmaniases in the Americas

Contact Info

Product

Resources

About