Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina.
Human sleeping quarters (domiciles) and chicken coops are key source habitats of Triatoma infestans-the principal vector of the infection that causes Chagas disease-in rural communities in northern Argentina. Here we investigated the links among individual bug bloodmeal contents (BMC, mg), female fe...
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ftdoajarticles:oai:doaj.org/article:49c873b5177446758fa063753ac8e91b 2023-05-15T15:13:35+02:00 Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. Ricardo E Gürtler María Del Pilar Fernández María Carla Cecere Joel E Cohen 2017-12-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0006097 https://doaj.org/article/49c873b5177446758fa063753ac8e91b EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5734792?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0006097 https://doaj.org/article/49c873b5177446758fa063753ac8e91b PLoS Neglected Tropical Diseases, Vol 11, Iss 12, p e0006097 (2017) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2017 ftdoajarticles https://doi.org/10.1371/journal.pntd.0006097 2022-12-31T04:15:37Z Human sleeping quarters (domiciles) and chicken coops are key source habitats of Triatoma infestans-the principal vector of the infection that causes Chagas disease-in rural communities in northern Argentina. Here we investigated the links among individual bug bloodmeal contents (BMC, mg), female fecundity, body length (L, mm), host blood sources and habitats. We tested whether L, habitat and host blood conferred relative fitness advantages using generalized linear mixed-effects models and a multimodel inference approach with model averaging. The data analyzed include 769 late-stage triatomines collected in 120 sites from six habitats in 87 houses in Figueroa, Santiago del Estero, during austral spring. L correlated positively with other body-size surrogates and was modified by habitat type, bug stage and recent feeding. Bugs from chicken coops were significantly larger than pig-corral and kitchen bugs. The best-fitting model of log BMC included habitat, a recent feeding, bug stage, log Lc (mean-centered log L) and all two-way interactions including log Lc. Human- and chicken-fed bugs had significantly larger BMC than bugs fed on other hosts whereas goat-fed bugs ranked last, in consistency with average blood-feeding rates. Fecundity was maximal in chicken-fed bugs from chicken coops, submaximal in human- and pig-fed bugs, and minimal in goat-fed bugs. This study is the first to reveal the allometric effects of body-size surrogates on BMC and female fecundity in a large set of triatomine populations occupying multiple habitats, and discloses the links between body size, microsite temperatures and various fitness components that affect the risks of transmission of Trypanosoma cruzi. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Austral Argentina Corral ENVELOPE(-62.950,-62.950,-64.900,-64.900) Figueroa ENVELOPE(-61.033,-61.033,-64.067,-64.067) PLOS Neglected Tropical Diseases 11 12 e0006097 |
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 Ricardo E Gürtler María Del Pilar Fernández María Carla Cecere Joel E Cohen Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
Human sleeping quarters (domiciles) and chicken coops are key source habitats of Triatoma infestans-the principal vector of the infection that causes Chagas disease-in rural communities in northern Argentina. Here we investigated the links among individual bug bloodmeal contents (BMC, mg), female fecundity, body length (L, mm), host blood sources and habitats. We tested whether L, habitat and host blood conferred relative fitness advantages using generalized linear mixed-effects models and a multimodel inference approach with model averaging. The data analyzed include 769 late-stage triatomines collected in 120 sites from six habitats in 87 houses in Figueroa, Santiago del Estero, during austral spring. L correlated positively with other body-size surrogates and was modified by habitat type, bug stage and recent feeding. Bugs from chicken coops were significantly larger than pig-corral and kitchen bugs. The best-fitting model of log BMC included habitat, a recent feeding, bug stage, log Lc (mean-centered log L) and all two-way interactions including log Lc. Human- and chicken-fed bugs had significantly larger BMC than bugs fed on other hosts whereas goat-fed bugs ranked last, in consistency with average blood-feeding rates. Fecundity was maximal in chicken-fed bugs from chicken coops, submaximal in human- and pig-fed bugs, and minimal in goat-fed bugs. This study is the first to reveal the allometric effects of body-size surrogates on BMC and female fecundity in a large set of triatomine populations occupying multiple habitats, and discloses the links between body size, microsite temperatures and various fitness components that affect the risks of transmission of Trypanosoma cruzi. |
format |
Article in Journal/Newspaper |
author |
Ricardo E Gürtler María Del Pilar Fernández María Carla Cecere Joel E Cohen |
author_facet |
Ricardo E Gürtler María Del Pilar Fernández María Carla Cecere Joel E Cohen |
author_sort |
Ricardo E Gürtler |
title |
Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. |
title_short |
Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. |
title_full |
Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. |
title_fullStr |
Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. |
title_full_unstemmed |
Body size and hosts of Triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern Argentina. |
title_sort |
body size and hosts of triatoma infestans populations affect the size of bloodmeal contents and female fecundity in rural northwestern argentina. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
https://doi.org/10.1371/journal.pntd.0006097 https://doaj.org/article/49c873b5177446758fa063753ac8e91b |
long_lat |
ENVELOPE(-62.950,-62.950,-64.900,-64.900) ENVELOPE(-61.033,-61.033,-64.067,-64.067) |
geographic |
Arctic Austral Argentina Corral Figueroa |
geographic_facet |
Arctic Austral Argentina Corral Figueroa |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 11, Iss 12, p e0006097 (2017) |
op_relation |
http://europepmc.org/articles/PMC5734792?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0006097 https://doaj.org/article/49c873b5177446758fa063753ac8e91b |
op_doi |
https://doi.org/10.1371/journal.pntd.0006097 |
container_title |
PLOS Neglected Tropical Diseases |
container_volume |
11 |
container_issue |
12 |
container_start_page |
e0006097 |
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1766344123595358208 |