Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome.
BACKGROUND:Rhodnius nasutus, a vector of the etiological agent Trypanosoma cruzi, is one of the epidemiologically most relevant triatomine species of the Brazilian Caatinga, where it often colonizes rural peridomestic structures such as chicken coops and occasionally invades houses. Historical colon...
Published in: | PLOS Neglected Tropical Diseases |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2018
|
Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pntd.0006731 https://doaj.org/article/e9addf7fe71b400388cd69abf94eb088 |
id |
ftdoajarticles:oai:doaj.org/article:e9addf7fe71b400388cd69abf94eb088 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:e9addf7fe71b400388cd69abf94eb088 2023-05-15T15:14:40+02:00 Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. Tatiana Peretolchina Márcio G Pavan Jessica Corrêa-Antônio Rodrigo Gurgel-Gonçalves Marli M Lima Fernando A Monteiro 2018-09-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0006731 https://doaj.org/article/e9addf7fe71b400388cd69abf94eb088 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC6195287?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0006731 https://doaj.org/article/e9addf7fe71b400388cd69abf94eb088 PLoS Neglected Tropical Diseases, Vol 12, Iss 9, p e0006731 (2018) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2018 ftdoajarticles https://doi.org/10.1371/journal.pntd.0006731 2022-12-31T09:35:55Z BACKGROUND:Rhodnius nasutus, a vector of the etiological agent Trypanosoma cruzi, is one of the epidemiologically most relevant triatomine species of the Brazilian Caatinga, where it often colonizes rural peridomestic structures such as chicken coops and occasionally invades houses. Historical colonization and determination of its genetic diversity and population structure may provide new information towards the improvement of vector control in the region. In this paper we present thoughtful analyses considering the phylogeography and demographic history of R. nasutus in the Caatinga. METHODOLOGY/PRINCIPAL FINDINGS:A total of 157 R. nasutus specimens were collected from Copernicia prunifera palm trees in eight geographic localities within the Brazilian Caatinga biome, sequenced for 595-bp fragment of the mitochondrial cytochrome b gene (cyt b) and genotyped for eight microsatellite loci. Sixteen haplotypes were detected in the cyt b sequences, two of which were shared among different localities. Molecular diversity indices exhibited low diversity levels and a haplotype network revealed low divergence among R. nasutus sequences, with two central haplotypes shared by five of the eight populations analyzed. The demographic model that better represented R. nasutus population dynamics was the exponential growth model. Results of the microsatellite data analyses indicated that the entire population is comprised of four highly differentiated groups, with no obvious contemporary geographic barriers that could explain the population substructure detected. A complex pattern of migration was observed, in which a western Caatinga population seems to be the source of emigrants to the eastern populations. CONCLUSIONS/SIGNIFICANCE:R. nasutus that inhabit C. prunifera palms do not comprise a species complex. The species went through a population expansion at 12-10 ka, during the Holocene, which coincides with end of the largest dry season in South America. It colonized the Caatinga in a process that occurred from west to east ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLOS Neglected Tropical Diseases 12 9 e0006731 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Tatiana Peretolchina Márcio G Pavan Jessica Corrêa-Antônio Rodrigo Gurgel-Gonçalves Marli M Lima Fernando A Monteiro Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
BACKGROUND:Rhodnius nasutus, a vector of the etiological agent Trypanosoma cruzi, is one of the epidemiologically most relevant triatomine species of the Brazilian Caatinga, where it often colonizes rural peridomestic structures such as chicken coops and occasionally invades houses. Historical colonization and determination of its genetic diversity and population structure may provide new information towards the improvement of vector control in the region. In this paper we present thoughtful analyses considering the phylogeography and demographic history of R. nasutus in the Caatinga. METHODOLOGY/PRINCIPAL FINDINGS:A total of 157 R. nasutus specimens were collected from Copernicia prunifera palm trees in eight geographic localities within the Brazilian Caatinga biome, sequenced for 595-bp fragment of the mitochondrial cytochrome b gene (cyt b) and genotyped for eight microsatellite loci. Sixteen haplotypes were detected in the cyt b sequences, two of which were shared among different localities. Molecular diversity indices exhibited low diversity levels and a haplotype network revealed low divergence among R. nasutus sequences, with two central haplotypes shared by five of the eight populations analyzed. The demographic model that better represented R. nasutus population dynamics was the exponential growth model. Results of the microsatellite data analyses indicated that the entire population is comprised of four highly differentiated groups, with no obvious contemporary geographic barriers that could explain the population substructure detected. A complex pattern of migration was observed, in which a western Caatinga population seems to be the source of emigrants to the eastern populations. CONCLUSIONS/SIGNIFICANCE:R. nasutus that inhabit C. prunifera palms do not comprise a species complex. The species went through a population expansion at 12-10 ka, during the Holocene, which coincides with end of the largest dry season in South America. It colonized the Caatinga in a process that occurred from west to east ... |
format |
Article in Journal/Newspaper |
author |
Tatiana Peretolchina Márcio G Pavan Jessica Corrêa-Antônio Rodrigo Gurgel-Gonçalves Marli M Lima Fernando A Monteiro |
author_facet |
Tatiana Peretolchina Márcio G Pavan Jessica Corrêa-Antônio Rodrigo Gurgel-Gonçalves Marli M Lima Fernando A Monteiro |
author_sort |
Tatiana Peretolchina |
title |
Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. |
title_short |
Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. |
title_full |
Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. |
title_fullStr |
Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. |
title_full_unstemmed |
Phylogeography and demographic history of the Chagas disease vector Rhodnius nasutus (Hemiptera: Reduviidae) in the Brazilian Caatinga biome. |
title_sort |
phylogeography and demographic history of the chagas disease vector rhodnius nasutus (hemiptera: reduviidae) in the brazilian caatinga biome. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2018 |
url |
https://doi.org/10.1371/journal.pntd.0006731 https://doaj.org/article/e9addf7fe71b400388cd69abf94eb088 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 12, Iss 9, p e0006731 (2018) |
op_relation |
http://europepmc.org/articles/PMC6195287?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0006731 https://doaj.org/article/e9addf7fe71b400388cd69abf94eb088 |
op_doi |
https://doi.org/10.1371/journal.pntd.0006731 |
container_title |
PLOS Neglected Tropical Diseases |
container_volume |
12 |
container_issue |
9 |
container_start_page |
e0006731 |
_version_ |
1766345095345340416 |