Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia
Abstract Background The Human Blood Index (HBI, proportion of bloodmeals of a mosquito population obtained from man) is relevant to epidemiological assessment and to the modification of measures to interrupt malaria transmission since the vectorial capacity of the vector varies as the square of the...
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ftdoajarticles:oai:doaj.org/article:72079f70d63c43b6a7a683b94b7d2b8c 2023-05-15T15:16:23+02:00 Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia Bouchité Bernard Loayza Paola Lardeux Frédéric Chavez Tamara 2007-01-01T00:00:00Z https://doi.org/10.1186/1475-2875-6-8 https://doaj.org/article/72079f70d63c43b6a7a683b94b7d2b8c EN eng BMC http://www.malariajournal.com/content/6/1/8 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-6-8 1475-2875 https://doaj.org/article/72079f70d63c43b6a7a683b94b7d2b8c Malaria Journal, Vol 6, Iss 1, p 8 (2007) Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2007 ftdoajarticles https://doi.org/10.1186/1475-2875-6-8 2022-12-31T09:06:05Z Abstract Background The Human Blood Index (HBI, proportion of bloodmeals of a mosquito population obtained from man) is relevant to epidemiological assessment and to the modification of measures to interrupt malaria transmission since the vectorial capacity of the vector varies as the square of the HBI. Anopheles pseudopunctipennis is a main malaria vector in South America. Unfortunately, few data exist concerning HBI values in its range of distribution and none from Bolivia where this species is considered as an important malaria vector in the central Andes. Methods The host choice of An. pseudopunctipennis has been studied in Mataral, a characteristic village of the central Andes of Bolivia. Mosquito host feeding preference experiments (equal accessibility to host in homogenous environment) were monitored using baited mosquito nets in latin square designs. Host feeding selection experiments (natural feeding pattern in heterogeneous environment) was measured by bloodmeal analysis, using ELISA to determine the origin of blood. Mosquito bloodmeals were collected on various occasions, using various techniques in a variety of sampling sites. A survey of the possible blood sources has also been carried out in the village. Data were analysed with the forage ratio method. Results An. pseudopunctipennis chooses amongst hosts. Sheep, goats, donkeys and humans are the preferred hosts, while dogs, pigs and chicken are rarely bitten. An. pseudopunctipennis has an opportunistic behaviour, in particular within the preferred hosts. The HBI in Mataral is ≈40% and in the central Andes, may range from 30–50%, in accordance to other findings. A high proportion of mixed meals were encountered (8%), and cryptic meals are likely more numerous. There was no difference amongst the HBI from parous and nulliparous mosquitoes. Conclusion Forage ratio analysis is a powerful tool to interpret mosquito host choices. However, refinements in sampling strategies are still needed to derive accurate and precise HBIs that could be computed to ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 6 1 |
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Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
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Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Bouchité Bernard Loayza Paola Lardeux Frédéric Chavez Tamara Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background The Human Blood Index (HBI, proportion of bloodmeals of a mosquito population obtained from man) is relevant to epidemiological assessment and to the modification of measures to interrupt malaria transmission since the vectorial capacity of the vector varies as the square of the HBI. Anopheles pseudopunctipennis is a main malaria vector in South America. Unfortunately, few data exist concerning HBI values in its range of distribution and none from Bolivia where this species is considered as an important malaria vector in the central Andes. Methods The host choice of An. pseudopunctipennis has been studied in Mataral, a characteristic village of the central Andes of Bolivia. Mosquito host feeding preference experiments (equal accessibility to host in homogenous environment) were monitored using baited mosquito nets in latin square designs. Host feeding selection experiments (natural feeding pattern in heterogeneous environment) was measured by bloodmeal analysis, using ELISA to determine the origin of blood. Mosquito bloodmeals were collected on various occasions, using various techniques in a variety of sampling sites. A survey of the possible blood sources has also been carried out in the village. Data were analysed with the forage ratio method. Results An. pseudopunctipennis chooses amongst hosts. Sheep, goats, donkeys and humans are the preferred hosts, while dogs, pigs and chicken are rarely bitten. An. pseudopunctipennis has an opportunistic behaviour, in particular within the preferred hosts. The HBI in Mataral is ≈40% and in the central Andes, may range from 30–50%, in accordance to other findings. A high proportion of mixed meals were encountered (8%), and cryptic meals are likely more numerous. There was no difference amongst the HBI from parous and nulliparous mosquitoes. Conclusion Forage ratio analysis is a powerful tool to interpret mosquito host choices. However, refinements in sampling strategies are still needed to derive accurate and precise HBIs that could be computed to ... |
format |
Article in Journal/Newspaper |
author |
Bouchité Bernard Loayza Paola Lardeux Frédéric Chavez Tamara |
author_facet |
Bouchité Bernard Loayza Paola Lardeux Frédéric Chavez Tamara |
author_sort |
Bouchité Bernard |
title |
Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia |
title_short |
Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia |
title_full |
Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia |
title_fullStr |
Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia |
title_full_unstemmed |
Host choice and human blood index of Anopheles pseudopunctipennis in a village of the Andean valleys of Bolivia |
title_sort |
host choice and human blood index of anopheles pseudopunctipennis in a village of the andean valleys of bolivia |
publisher |
BMC |
publishDate |
2007 |
url |
https://doi.org/10.1186/1475-2875-6-8 https://doaj.org/article/72079f70d63c43b6a7a683b94b7d2b8c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 6, Iss 1, p 8 (2007) |
op_relation |
http://www.malariajournal.com/content/6/1/8 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-6-8 1475-2875 https://doaj.org/article/72079f70d63c43b6a7a683b94b7d2b8c |
op_doi |
https://doi.org/10.1186/1475-2875-6-8 |
container_title |
Malaria Journal |
container_volume |
6 |
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1 |
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1766346672889135104 |