Incipient colonisation of Lutzomyia longipalpis in the city of Resistencia, province of Chaco, Argentina (2010-2012)

Abstract

Lutzomyia longipalpis was recorded for the first time in Argentina in 2004, in the province of Formosa. In the following years, the vector spread to the south and west in the country and was recorded in the province of Chaco in 2010. From November 2010-May 2012, captures of Phlebotominae were made in the city of Resistencia and its surroundings, to monitor the spread and possible colonisation of Lu. longipalpis in the province of Chaco. In this monitoring, Lu. longipalpis was absent in urban sampling sites and its presence was restricted to Barrio de los Pescadores. This suggests that the incipient colonisation observed in 2010 was not followed by continuous installation of vector populations and expansion of their spatial distribution as in other urban centres of Argentina.

Temporal distribution of, and effect of anthropic modifications on, phlebotomine populations in the Chaco Bioregion, Argentina

“…It should also be highlighted that the incipient colonization by Lu. longipalpis of the city of Resistencia recorded in 2010 (Salomón et al., ), with low numbers of records in HC 1B in May 2010 (data not shown), was not followed by the continuous establishment of vector populations (Szelag et al., ). The absence of Lu.…”

“…infantum and one autochthonous human case (Salomón et al., ). Considering this distribution, the province of Chaco has been highlighted as a vulnerable area for LV transmission, as a consequence of its proximity to Corrientes City and a possible dispersion route of VL to the southwest of the country (Szelag et al., ). These findings, in addition to TL transmission having been known since the 1950s, emphasize the importance of identifying localities with a presence and high abundance of potential TL and VL vectors, and of characterizing their variation in time and space so as to establish the transmission risk in periurban and rural localities with different degrees of anthropic modifications.…”

Lutzomyia longipalpis urbanisation and control

“…In this regard, the intermittent colonisation of Lu. longipalpis at the borders of its current distribution seems to be associated with critical climatic factors ( Szelag et al. 2014 ) and according to potential distribution models, the variables that best generalised the models of the presence of Lu.…”

Phlebotominae in peri‐domestic and forest environments inhabited by Alouatta caraya in northeastern Argentina

“…longipalpis (Rangel et al ., ). Similar results were reported in other localities of northeastern Argentina also surrounded by forest environment (Salomón et al ., , ; Santini et al ., ; Szelag et al ., ; Berrozpe et al ., ). Interestingly, Lu.…”