Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil.
Sandflies are holometabolous insects that are of great epidemiological importance in the neotropical region as vectors of leishmaniases. Caves are ecotopes that significantly differ from external environments and, among the insects that live or visit their internal area and adjacent environment, san...
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2012
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oai:doaj.org-article:d2816a6c108f4f2e93336a59275ead022021-11-18T08:04:28ZHourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil.1932-620310.1371/journal.pone.0052254https://doaj.org/article/d2816a6c108f4f2e93336a59275ead022012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23284957/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Sandflies are holometabolous insects that are of great epidemiological importance in the neotropical region as vectors of leishmaniases. Caves are ecotopes that significantly differ from external environments and, among the insects that live or visit their internal area and adjacent environment, sandflies are commonly found. Based on this context, the objective of this work was to examine the period of activity of sandflies in the cave environment in the aphotic zone. Thus, four sandfly captures were conducted, one in each season of the year, in a cave where studies on the bioecological aspects of sandfly fauna have been conducted since 2008. In this same study, we have also noticed the presence of flagellates in some captured females. Catches were carried out for 24 hours using a Shannon trap, light bait, and cave walls were actively searched. We collected a total of 638 sandflies, representing 11 species. The most abundant species and with more intense period of activity were, in descending order: Lu. cavernicola (62%), Ev. spelunca (16%) and Ev. sallesi (14%). A total of 69 females were dissected to check for natural infection, and in five specimens we found living flagellated forms: two Ev. spelunca, two Ev. sallesi and one Sc. sordellii. This study shows that the activity of some species caught in the aphotic zone of the cave, especially Lu. cavernicola, differs from what has already been reported in previous sandfly captures, which are almost always conducted at night and during twilight. The existence of sandflies that were naturally infected with flagellates and the lack of awareness regarding the behaviour of sandflies in cave environments are strong indicators of the need for further study on this group of insects in this ecotope, as a safety measure to protect the visitors of such environment.Gustavo Mayr de Lima CarvalhoReginaldo Peçanha BrazilLara SaraivaPatrícia Flávia QuaresmaHelbert Antônio BotelhoMariana Campos das Neves Farah RamosAna Paula Lusardo de Almeida ZenóbioPaula Cavalcante Lamy Serra e MeiraCristiani de Castilho SanguinetteJosé Dilermando Andrade FilhoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e52254 (2012) |
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Medicine R Science Q Gustavo Mayr de Lima Carvalho Reginaldo Peçanha Brazil Lara Saraiva Patrícia Flávia Quaresma Helbert Antônio Botelho Mariana Campos das Neves Farah Ramos Ana Paula Lusardo de Almeida Zenóbio Paula Cavalcante Lamy Serra e Meira Cristiani de Castilho Sanguinette José Dilermando Andrade Filho Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil. |
| description |
Sandflies are holometabolous insects that are of great epidemiological importance in the neotropical region as vectors of leishmaniases. Caves are ecotopes that significantly differ from external environments and, among the insects that live or visit their internal area and adjacent environment, sandflies are commonly found. Based on this context, the objective of this work was to examine the period of activity of sandflies in the cave environment in the aphotic zone. Thus, four sandfly captures were conducted, one in each season of the year, in a cave where studies on the bioecological aspects of sandfly fauna have been conducted since 2008. In this same study, we have also noticed the presence of flagellates in some captured females. Catches were carried out for 24 hours using a Shannon trap, light bait, and cave walls were actively searched. We collected a total of 638 sandflies, representing 11 species. The most abundant species and with more intense period of activity were, in descending order: Lu. cavernicola (62%), Ev. spelunca (16%) and Ev. sallesi (14%). A total of 69 females were dissected to check for natural infection, and in five specimens we found living flagellated forms: two Ev. spelunca, two Ev. sallesi and one Sc. sordellii. This study shows that the activity of some species caught in the aphotic zone of the cave, especially Lu. cavernicola, differs from what has already been reported in previous sandfly captures, which are almost always conducted at night and during twilight. The existence of sandflies that were naturally infected with flagellates and the lack of awareness regarding the behaviour of sandflies in cave environments are strong indicators of the need for further study on this group of insects in this ecotope, as a safety measure to protect the visitors of such environment. |
| format |
article |
| author |
Gustavo Mayr de Lima Carvalho Reginaldo Peçanha Brazil Lara Saraiva Patrícia Flávia Quaresma Helbert Antônio Botelho Mariana Campos das Neves Farah Ramos Ana Paula Lusardo de Almeida Zenóbio Paula Cavalcante Lamy Serra e Meira Cristiani de Castilho Sanguinette José Dilermando Andrade Filho |
| author_facet |
Gustavo Mayr de Lima Carvalho Reginaldo Peçanha Brazil Lara Saraiva Patrícia Flávia Quaresma Helbert Antônio Botelho Mariana Campos das Neves Farah Ramos Ana Paula Lusardo de Almeida Zenóbio Paula Cavalcante Lamy Serra e Meira Cristiani de Castilho Sanguinette José Dilermando Andrade Filho |
| author_sort |
Gustavo Mayr de Lima Carvalho |
| title |
Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil. |
| title_short |
Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil. |
| title_full |
Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil. |
| title_fullStr |
Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil. |
| title_full_unstemmed |
Hourly activity and natural infection of sandflies (Diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, Brazil. |
| title_sort |
hourly activity and natural infection of sandflies (diptera: psychodidae) captured from the aphotic zone of a cave, minas gerais state, brazil. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2012 |
| url |
https://doaj.org/article/d2816a6c108f4f2e93336a59275ead02 |
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