Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil
Abstract Background Entomological surveillance of sand fly vectors was carried out to support leishmaniasis prevention and control measures in areas affected by the São Francisco River Transposition Project. Methods Sand flies were collected monthly between May 2011 and December 2014 in seven munici...
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| Format: | Article |
| Language: | English |
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BMC
2017-08-01
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| Series: | Parasites & Vectors |
| Online Access: | http://link.springer.com/article/10.1186/s13071-017-2333-z |
| _version_ | 1818893989892325376 |
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| author | Júlia dos Santos Silva Lindemberg Caranha Fabrício Kássio Moura Santos Antonio Pereira dos Santos Luiz Osvaldo Rodrigues da Silva Elizabeth Ferreira Rangel |
| author_facet | Júlia dos Santos Silva Lindemberg Caranha Fabrício Kássio Moura Santos Antonio Pereira dos Santos Luiz Osvaldo Rodrigues da Silva Elizabeth Ferreira Rangel |
| author_sort | Júlia dos Santos Silva |
| collection | DOAJ |
| description | Abstract Background Entomological surveillance of sand fly vectors was carried out to support leishmaniasis prevention and control measures in areas affected by the São Francisco River Transposition Project. Methods Sand flies were collected monthly between May 2011 and December 2014 in seven municipalities: Missão Velha, Brejo Santo, Lavras da Mangabeira, Iguatu, Mauriti, Jaguaribe and Jaguaretama, in dwellings, peridomicile and forest areas for three consecutive days, for a period of 12 h each day (18:00 to 06:00 h). Differences in species composition between sites were tested with Shannon’s diversity index, the similarity between habitats was estimated by the Sørensen’s qualitative similarity index and, for the most abundant species in each municipality, a standardized index of species abundance was applied. The influence of climatic factors on sand fly population densities was analyzed using Spearman’s correlation coefficients. Results A total of 214,213 sand fly specimens belonging to 18 species were captured. The most abundant species in all municipalities was Lutzomyia longipalpis (Lutz & Neiva, 1912). The municipalities of Mauriti and Missão Velha stand out in terms of high species richness, with the latter exhibiting the greatest diversity. The number of sand flies in the Iguatu, Jaguaribe and Jaguaretama municipality was higher during the rainy months, whereas the populations declined in the drier months; the sand fly population density in other municipalities (Missão Velha, Brejo Santo, Lavras de Mangabeira and Mauriti) showed negative correlation with rainfall. Conclusions This study confirms the presence of several Leishmania spp. vectors in the seven municipalities affected by the São Francisco River Transposition Project, with Lu. longipalpis being the most abundant species at all study sites. Vector populations in these municipalities should be monitored, ultimately to assess the associations between environmental changes and sand fly population dynamics and leishmaniasis transmission risk. |
| first_indexed | 2024-12-19T18:21:22Z |
| format | Article |
| id | doaj.art-a25bca44f45c4bdd83826519d3f6eefa |
| institution | Directory Open Access Journal |
| issn | 1756-3305 |
| language | English |
| last_indexed | 2024-12-19T18:21:22Z |
| publishDate | 2017-08-01 |
| publisher | BMC |
| record_format | Article |
| series | Parasites & Vectors |
| spelling | doaj.art-a25bca44f45c4bdd83826519d3f6eefa2022-12-21T20:10:58ZengBMCParasites & Vectors1756-33052017-08-0110111310.1186/s13071-017-2333-zSand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, BrazilJúlia dos Santos Silva0Lindemberg Caranha1Fabrício Kássio Moura Santos2Antonio Pereira dos Santos3Luiz Osvaldo Rodrigues da Silva4Elizabeth Ferreira Rangel5Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZSecretaria de Saúde do Estado do CearáSecretaria de Saúde do Estado do CearáSecretaria de Saúde do Estado do CearáSecretaria de Saúde do Estado do CearáLaboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, FIOCRUZAbstract Background Entomological surveillance of sand fly vectors was carried out to support leishmaniasis prevention and control measures in areas affected by the São Francisco River Transposition Project. Methods Sand flies were collected monthly between May 2011 and December 2014 in seven municipalities: Missão Velha, Brejo Santo, Lavras da Mangabeira, Iguatu, Mauriti, Jaguaribe and Jaguaretama, in dwellings, peridomicile and forest areas for three consecutive days, for a period of 12 h each day (18:00 to 06:00 h). Differences in species composition between sites were tested with Shannon’s diversity index, the similarity between habitats was estimated by the Sørensen’s qualitative similarity index and, for the most abundant species in each municipality, a standardized index of species abundance was applied. The influence of climatic factors on sand fly population densities was analyzed using Spearman’s correlation coefficients. Results A total of 214,213 sand fly specimens belonging to 18 species were captured. The most abundant species in all municipalities was Lutzomyia longipalpis (Lutz & Neiva, 1912). The municipalities of Mauriti and Missão Velha stand out in terms of high species richness, with the latter exhibiting the greatest diversity. The number of sand flies in the Iguatu, Jaguaribe and Jaguaretama municipality was higher during the rainy months, whereas the populations declined in the drier months; the sand fly population density in other municipalities (Missão Velha, Brejo Santo, Lavras de Mangabeira and Mauriti) showed negative correlation with rainfall. Conclusions This study confirms the presence of several Leishmania spp. vectors in the seven municipalities affected by the São Francisco River Transposition Project, with Lu. longipalpis being the most abundant species at all study sites. Vector populations in these municipalities should be monitored, ultimately to assess the associations between environmental changes and sand fly population dynamics and leishmaniasis transmission risk.http://link.springer.com/article/10.1186/s13071-017-2333-z |
| spellingShingle | Júlia dos Santos Silva Lindemberg Caranha Fabrício Kássio Moura Santos Antonio Pereira dos Santos Luiz Osvaldo Rodrigues da Silva Elizabeth Ferreira Rangel Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil Parasites & Vectors |
| title | Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil |
| title_full | Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil |
| title_fullStr | Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil |
| title_full_unstemmed | Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil |
| title_short | Sand fly (Diptera, Psychodidae, Phlebotominae) abundance and diversity in areas affected by the São Francisco River transposition project in Ceará State, Brazil |
| title_sort | sand fly diptera psychodidae phlebotominae abundance and diversity in areas affected by the sao francisco river transposition project in ceara state brazil |
| url | http://link.springer.com/article/10.1186/s13071-017-2333-z |
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