Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista do Instituto de Medicina Tropical de São Paulo |
Texto Completo: | https://www.revistas.usp.br/rimtsp/article/view/30414 |
Resumo: | Various species of Anopheles (Nyssorhynchus) were studied in the Amazon with the objective of determining their importance as malaria vectors. Of the 33 known Anopheles species occurring in the Amazon, only 9 were found to be infected with Plasmodium. The different species of this subgenus varied both in diversity and density in the collection areas. The populations showed a tendency towards lower density and diversity in virgin forest than in areas modified by human intervention. The principal vector, An. darlingi, is anthropophilic with a continuous activity cycle lasting the entire night but peaking at sunset and sunrise. These species (Nyssorhynchus) are peridomiciliary, entering houses to feed on blood and immediately leaving to settle on nearby vegetation. Anopheles nuneztovari proved to be zoophilic, crepuscular and peridomiciliary. These habits may change depending on a series of external factors, especially those related to human activity. There is a possibility that sibling species exist in the study area and they are being studied with reference to An. darlingi, An. albitarsis and An. nuneztovari. The present results do not suggest the existence of subpopulations of An. darlingi in the Brazilian Amazon. |
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Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus Anopheles do subgênero Nyssorhynchus, vetores da malária na Amazônia brasileira Malaria vectAnophePlasmodAma Various species of Anopheles (Nyssorhynchus) were studied in the Amazon with the objective of determining their importance as malaria vectors. Of the 33 known Anopheles species occurring in the Amazon, only 9 were found to be infected with Plasmodium. The different species of this subgenus varied both in diversity and density in the collection areas. The populations showed a tendency towards lower density and diversity in virgin forest than in areas modified by human intervention. The principal vector, An. darlingi, is anthropophilic with a continuous activity cycle lasting the entire night but peaking at sunset and sunrise. These species (Nyssorhynchus) are peridomiciliary, entering houses to feed on blood and immediately leaving to settle on nearby vegetation. Anopheles nuneztovari proved to be zoophilic, crepuscular and peridomiciliary. These habits may change depending on a series of external factors, especially those related to human activity. There is a possibility that sibling species exist in the study area and they are being studied with reference to An. darlingi, An. albitarsis and An. nuneztovari. The present results do not suggest the existence of subpopulations of An. darlingi in the Brazilian Amazon. Várias espécies de Anopheles (Nyssorhynchus) foram estudadas na Amazônia a fim de se determinar sua importância na transmissão da malária. Das 33 espécies de Anopheles de ocorrência conhecida na Amazônia, apenas 8 foram encontradas infectadas por Plasmodium. O principal vetor, An. darlingi, é antropofílico com um ciclo contínuo de atividade que dura a noite inteira mas que tem picos ao anoitecer e ao amanhecer. As diferentes espécies desse subgênero variaram tanto em diversidade como em densidade nas áreas de coleta. A população de anofelinos apresentou tendências de menor densidade e diversidade em florestas virgens do que em áreas que sofreram intervenção humana. Essas espécies (Nyssorhynchus) são peridomiciliares entrando nas casas para se alimentar de sangue. De imediato retiram-se e pousam-se novamente na vegetação próxima. Anopheles nuneztovari provou ser zoofílico, crepuscular e peridomiciliar. Esses hábitos podem mudar dependendo de uma série de fatores externos, especialmente aqueles relacionados com as atividades humanas. Os índices de infecção mostrados foram altos. No entanto os registros não mostram que surtos são desencadeados senão quando os casos de malária provocados pelo An. darlingi são detectados. Há possibilidade de que existam espécies crípticas na área, são estudadas com referência a An. darlingi, An. albitarsis e An. nuneztovari. Nessas circunstâncias, os resultados atuais, não sugerem a existência de subpopulações de An. darlingi na Amazônia brasileira. Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo2000-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rimtsp/article/view/30414Revista do Instituto de Medicina Tropical de São Paulo; Vol. 42 No. 2 (2000); 87-94 Revista do Instituto de Medicina Tropical de São Paulo; Vol. 42 Núm. 2 (2000); 87-94 Revista do Instituto de Medicina Tropical de São Paulo; v. 42 n. 2 (2000); 87-94 1678-99460036-4665reponame:Revista do Instituto de Medicina Tropical de São Pauloinstname:Instituto de Medicina Tropical (IMT)instacron:IMTenghttps://www.revistas.usp.br/rimtsp/article/view/30414/32298Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Pauloinfo:eu-repo/semantics/openAccessTADEI, Wanderli PedroDUTARY THATCHER, Bedsy2012-07-07T09:33:48Zoai:revistas.usp.br:article/30414Revistahttp://www.revistas.usp.br/rimtsp/indexPUBhttps://www.revistas.usp.br/rimtsp/oai||revimtsp@usp.br1678-99460036-4665opendoar:2022-12-13T16:51:11.070233Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT)true |
dc.title.none.fl_str_mv |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus Anopheles do subgênero Nyssorhynchus, vetores da malária na Amazônia brasileira |
title |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus |
spellingShingle |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus TADEI, Wanderli Pedro Malaria vect Anophe Plasmod Ama |
title_short |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus |
title_full |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus |
title_fullStr |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus |
title_full_unstemmed |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus |
title_sort |
Malaria vectors in the Brazilian Amazon: Anopheles of the subgenus Nyssorhynchus |
author |
TADEI, Wanderli Pedro |
author_facet |
TADEI, Wanderli Pedro DUTARY THATCHER, Bedsy |
author_role |
author |
author2 |
DUTARY THATCHER, Bedsy |
author2_role |
author |
dc.contributor.author.fl_str_mv |
TADEI, Wanderli Pedro DUTARY THATCHER, Bedsy |
dc.subject.por.fl_str_mv |
Malaria vect Anophe Plasmod Ama |
topic |
Malaria vect Anophe Plasmod Ama |
description |
Various species of Anopheles (Nyssorhynchus) were studied in the Amazon with the objective of determining their importance as malaria vectors. Of the 33 known Anopheles species occurring in the Amazon, only 9 were found to be infected with Plasmodium. The different species of this subgenus varied both in diversity and density in the collection areas. The populations showed a tendency towards lower density and diversity in virgin forest than in areas modified by human intervention. The principal vector, An. darlingi, is anthropophilic with a continuous activity cycle lasting the entire night but peaking at sunset and sunrise. These species (Nyssorhynchus) are peridomiciliary, entering houses to feed on blood and immediately leaving to settle on nearby vegetation. Anopheles nuneztovari proved to be zoophilic, crepuscular and peridomiciliary. These habits may change depending on a series of external factors, especially those related to human activity. There is a possibility that sibling species exist in the study area and they are being studied with reference to An. darlingi, An. albitarsis and An. nuneztovari. The present results do not suggest the existence of subpopulations of An. darlingi in the Brazilian Amazon. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/rimtsp/article/view/30414 |
url |
https://www.revistas.usp.br/rimtsp/article/view/30414 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/rimtsp/article/view/30414/32298 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Paulo info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Paulo |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo |
dc.source.none.fl_str_mv |
Revista do Instituto de Medicina Tropical de São Paulo; Vol. 42 No. 2 (2000); 87-94 Revista do Instituto de Medicina Tropical de São Paulo; Vol. 42 Núm. 2 (2000); 87-94 Revista do Instituto de Medicina Tropical de São Paulo; v. 42 n. 2 (2000); 87-94 1678-9946 0036-4665 reponame:Revista do Instituto de Medicina Tropical de São Paulo instname:Instituto de Medicina Tropical (IMT) instacron:IMT |
instname_str |
Instituto de Medicina Tropical (IMT) |
instacron_str |
IMT |
institution |
IMT |
reponame_str |
Revista do Instituto de Medicina Tropical de São Paulo |
collection |
Revista do Instituto de Medicina Tropical de São Paulo |
repository.name.fl_str_mv |
Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT) |
repository.mail.fl_str_mv |
||revimtsp@usp.br |
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1798951642353106944 |