Dispersal of phlebotomine sand flies (Diptera: Psychodidae) in a colombian focus of leishmania (Viannia) brasiliensis

Alexander, Bruce; Young, David W.

doi:10.1590/s0074-02761992000300010

Cited by 48 publications

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“…This result suggested that the cyt b gene analysis will be a useful tool for identification of The genetic background of individual arthropod species and populations within those species are suggested to influence vectorial capacity and insecticide susceptibility (Lanzaro et al, 1993;Hassan et al, 2012). Since the larvae live in soil and the adults fly mostly less than 1 km (Alexander, 1987;Alexander and Young, 1992;Morrison et al, 1993). Therefore, a limited range of activity may result in a site-dependent genetic diversity in sand fly populations.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of the mitochondrial cytochrome b gene in Lutzomyia spp., with special reference to Lutzomyia peruensis, a main vector of Leishmania (Viannia) peruviana in the Peruvian Andes

et al. 2013

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The genetic divergence caused by genetic drift and/or selection is suggested to affect the vectorial capacity and insecticide susceptibility of sand flies, as well as other arthropods.In the present study, cytochrome b (cyt b) gene sequences were determined in 13 species circulating in Peru to establish a basis for analysis of the genetic structure, and the intraspecific genetic diversity was assessed in the Lutzomyia Consequently, other characteristics like molecular markers have been explored for the development of reliable tools for species identification, as well as an understanding of intraspecific genetic diversity and population structure (Torgerson et al., 2003;Beati et al., 2004; Terayama et al., 2008; Kuwahara et al., 2009;Fujita et al., 2012). Although discrepancies between morphologic groupings and the phylogenetic relationships were occasionally found, ribosomal RNA (rRNA) genes were shown to be useful genetic markers for identifying sand flies at the species level (Beati et al., 2004; Terayama et al., 2008;Fujita et al., 2012). The rRNA internal transcribed spacer (ITS) 1 and ITS2 sequences were also analyzed in sand flies, and their utility for taxonomic purposes, but not for intraspecific analysis, was reported (Kuwahara et al., 2009;Hamarsheh et al., 2009;Belen et al., 2011;Florin et al., 2011). 5It has been suggested that genetic divergence caused by genetic drift and/or selection may affect the vectorial capacity and insecticide susceptibility of sand flies, as well as other arthropods (Lanzaro et al., 1993;Hassan et al., 2012). Maternally inherited mitochondrial genes reflect the evolutionary history more accurately because of their clonal inheritance, the lack of recombination and higher mutation rate compared with nuclear DNA (Avise, 1994;Rokas et al., 2003). Thus, mitochondrial genes have been used in population genetics and evolutionary study of vector species including phlebotomine sand flies, and several mitochondrial genes have been applied to estimate the population structure of sand fly species (Esseghir et al., 1997; Ishikawa et al., 1999; Hodgkinson et al., 2003;Hamarsheh et al., 2007;Belen et al., 2011;Florin et al., 2011;Rocha et al., 2011;Cohnstaedt et al., 2012). Of these, the 3'-end of the cytochrome b (cyt b) gene has proven to be a suitable marker to evaluate genetic structure in Lutzomyia (Lu.) whitmani (Ishikawa et al., 1999), Lu. longipalpis (Hodgkinson et al., 2003;Rocha et al., 2011) and Lu. verrucarum (Cohnstaedt et al., 2012). In the present study, cy t b gene sequences including the 5' region were determined in 13 sand fly species circulating in Peru to establish a basis for the analysis of population structure, and the intraspecific genetic diversity was assessed for Lu. peruensis, a main vector species of Leishmania (Viannia) peruviana in the Peruvian Andes (Perez et al., 1991(Perez et al., , 2007 Kato et al., 2008 Kato et al., , 2011. Ambar and Jalcan, Department of Lima) (Fig. 1) were subjected to haplotype analysis.The sand flies were fixed in 100...

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Section: Discussionmentioning

confidence: 99%

Genetic diversity of the mitochondrial cytochrome b gene in Lutzomyia spp., with special reference to Lutzomyia peruensis, a main vector of Leishmania (Viannia) peruviana in the Peruvian Andes

et al. 2013

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“…The tendency of the adults is not to fly farther than about 180m from their shelters [18][19][20] , and the fact that sandflies with vectorial capacity were also observed in the periurban area of the City of Itambaracá may indicate that anthropic action has attracted these vectors to that environment.…”

Section: Discussionmentioning

confidence: 99%

Ecological aspects of the sandfly fauna (Diptera, Psychodidae) in an American cutaneous leishmaniasis endemic area under the influence of hydroelectric plants in Paranapanema river, State of Paraná, Brazil

Cruz

Galati

Cruz

2012

Rev. Soc. Bras. Med. Trop.

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Introduction: An epidemiological study was undertaken to identify determinant factors in the occurrence of American cutaneous leishmaniasis in areas under the influence of hydroelectric plants in Paranapanema River, State of Paraná, Brazil. The ecological aspects of the phlebotomine fauna were investigated. Methods: Sandflies were sampled with automatic light traps from February 2004 to June 2006 at 25 sites in the urban and rural areas of Itambaracá, and in Porto Almeida and São Joaquim do Pontal. Results: A total of 3,187 sandflies of 15 species were captured. Nyssomyia neivai predominated (34.4%), followed by Pintomyia pessoai (32.6%), Migonemyia migonei (11.6%), Nyssomyia whitmani (8.8%), and Pintomyia fischeri (2.7%), all implicated in the transmission of Leishmania. Males predominated for Ny. neivai, and females for the other vector species, with significant statistical differences (p < 0.001). Nyssomyia neivai, Pi. pessoai, Ny. whitmani, Brumptomyia brumpti, Mg. migonei, and Pi. fischeri presented the highest values for the Standardized Species Abundance Index (SSAI). The highest frequencies and diversities were found in the preserved forest in Porto Almeida, followed by forests with degradation in São Joaquim do Pontal and Vila Rural. Conclusions: Sandflies were captured in all localities, with the five vectors predominating. Ny. neivai had its highest frequencies in nearby peridomestic environments and Pi. pessoai in areas of preserved forests. The highest SSAI values of Ny. neivai and Pi. pessoai reflect their wider dispersion and higher frequencies compared with other species, which seems to indicate that these two species may be transmitting leishmaniasis in the area.

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“…Initially, we suspected that sand flies from Ecuador and Peru may be closely related, but not identical species; however, they were indistinguishable after comparative morphologic classification and genomic analysis (Caceres, unpublished;Kuwahara et al, 2009). These observations, along with a restricted range of sand fly activity through their development stages (Alexander, 1987;Alexander and Young, 1992;Morrison et al, 1993) …”

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Genetic divergence in populations of Lutzomyia ayacuchensis, a vector of Andean-type cutaneous leishmaniasis, in Ecuador and Peru

et al. 2015

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Haplotype and gene network analyses were performed on mitochondrial cytochrome oxidase I and cytochrome b gene sequences of Lutzomyia (Lu.) ayacuchensis populations from Andean areas of Ecuador and southern Peru where the sand fly species transmit Leishmania (Leishmania) mexicana and Leishmania (Viannia) peruviana, respectively, and populations from the northern Peruvian Andes, for which transmission of Leishmania by Lu. ayacuchensis has not been reported. The haplotype analyses showed higher intrapopulation genetic divergence in northern Peruvian Andes populations and less divergence in the southern Peru and Ecuador populations, suggesting that a population bottleneck occurred in the latter populations, but not in former ones. Importantly, both haplotype and phylogenetic analyses showed that populations from Ecuador consisted of clearly distinct clusters from southern Peru, and the two populations were separated from those of northern Peru.

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Dispersal of phlebotomine sand flies (Diptera: Psychodidae) in a colombian focus of leishmania (Viannia) brasiliensis

Cited by 48 publications

References 0 publications

Genetic diversity of the mitochondrial cytochrome b gene in Lutzomyia spp., with special reference to Lutzomyia peruensis, a main vector of Leishmania (Viannia) peruviana in the Peruvian Andes

Genetic diversity of the mitochondrial cytochrome b gene in Lutzomyia spp., with special reference to Lutzomyia peruensis, a main vector of Leishmania (Viannia) peruviana in the Peruvian Andes

Ecological aspects of the sandfly fauna (Diptera, Psychodidae) in an American cutaneous leishmaniasis endemic area under the influence of hydroelectric plants in Paranapanema river, State of Paraná, Brazil

Genetic divergence in populations of Lutzomyia ayacuchensis, a vector of Andean-type cutaneous leishmaniasis, in Ecuador and Peru

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