Artigo

The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon

Studies were made of the intestinal parasites of Amerindian populations of the Uaupes River basin of Brazil. Three groups were sampled1) Tukano fisher-agriculturalists who live in permanent riverine villages; 2) Maku hunter-horticulturalists who live in close contact with the Tukano fishing villages...

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Autor principal: Chernela, Janet M.
Outros Autores: Thatcher, Vernon Everet
Grau: Artigo
Idioma: English
Publicado em: Acta Amazonica 2020
Assuntos:
Ascaris
Roundworms
Parasite
Helminths
Indians
Ascaris
Vermes Redondos
Parasita
Helmintos
Índios
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/13158
id oai:repositorio:1-13158
recordtype dspace
spelling oai:repositorio:1-13158 The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon O efeito de permanência sobre a prevalência de infecção por Ascaris em duas populações de ameríndios da amazônia brasileira Chernela, Janet M. Thatcher, Vernon Everet Ascaris Roundworms Parasite Helminths Indians Ascaris Vermes Redondos Parasita Helmintos Índios Studies were made of the intestinal parasites of Amerindian populations of the Uaupes River basin of Brazil. Three groups were sampled1) Tukano fisher-agriculturalists who live in permanent riverine villages; 2) Maku hunter-horticulturalists who live in close contact with the Tukano fishing villages; and 3) Maku who inhabit the forest interior and have little contact with permanent settlements. Fecal samples were collected from 498 individuals of which 220 were from the first group, 135 from de second and 143 from the third. The samples were analyzed by means of microflotation and centrifugal sedimentation. A total of 18 protozoan and helminth species were recorded based on the presence of cysts or eggs. These included five nematode species that could not be identified. The three common pathogenic nematodes were found to be prevalentthe hookworm, Necator americanus(96%); the whipworm, Trichuris trichiura(77%) and the large roundworm, Ascaris lumbricoides(75%). The prevalence of Ascarisamong the villages was found to vary from 56 to 100%. Individuals living in, or associated with, permanent settlements had higher prevalence and intensity rates than those living in the nomadic hunter-gatherer way. This is shown to be directly related to fecal contamination of the environment in and around permanent settlements. The prevalence of Ascarisin a population can be used as an indicator of such environmental contamination. Estudos foram feitos dos parasitas intestinais de populações de ameríndios da bacia do Rio Uaupes no Brasil. Três grupos foram amostrados: 1) Tukano pescadores-agricultores que vivem em aldeias ribeirinhas permanentes; 2) Maku caçadores-horticultores que vivem em contato próximo com as aldeias pescadoras dos Tukano; e 3) Maku que habitam o interior da selva e têm pouco contato com aldeias permanentes. Amostras fecais foram obtidas de 498 indivíduos dos quais 220 foram do primeiro grupo, 135 do segundo e 143 do terceiro. As amostras foram analisadas pelos métodos de microflutuação e por sedimentação centrífuga. Um total de 18 espécies de protozoários e helmintos foram assinaladas com base na presença de cistos ou ovos. Entre estas, cinco espécies de nematóides não puderam ser identificadas. As três espécies de nematóides patogênicas comuns foram prevalentes: Necator americanus(96%); Trichuris trichiura(77%) e Ascaris lumbricoides(75%). A prevalência de Ascarisentre as aldeias variou entre 56 e 100%. Indivíduos morando em, ou associados com, aldeias permanentes apresentaram taxas de prevalência e intensidade mais elevadas do que as pessoas que continuavam vivendo como caçadores nômades. Isto tem uma relação direta com a contaminação fecal do ambiente dentro e ao redor das aldeias permanentes. A prevalência de Ascarisnuma população pode ser utilizada como uma indicadora deste tipo de contaminação ambiental. 2020-04-24T15:15:20Z 2020-04-24T15:15:20Z 1993 Artigo https://repositorio.inpa.gov.br/handle/1/13158 10.1590/1809-43921993231035 en Volume 23, Número 1, Pags. 25-35 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Acta Amazonica
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Ascaris
Roundworms
Parasite
Helminths
Indians
Ascaris
Vermes Redondos
Parasita
Helmintos
Índios
spellingShingle Ascaris
Roundworms
Parasite
Helminths
Indians
Ascaris
Vermes Redondos
Parasita
Helmintos
Índios
Chernela, Janet M.
The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon
topic_facet Ascaris
Roundworms
Parasite
Helminths
Indians
Ascaris
Vermes Redondos
Parasita
Helmintos
Índios
description Studies were made of the intestinal parasites of Amerindian populations of the Uaupes River basin of Brazil. Three groups were sampled1) Tukano fisher-agriculturalists who live in permanent riverine villages; 2) Maku hunter-horticulturalists who live in close contact with the Tukano fishing villages; and 3) Maku who inhabit the forest interior and have little contact with permanent settlements. Fecal samples were collected from 498 individuals of which 220 were from the first group, 135 from de second and 143 from the third. The samples were analyzed by means of microflotation and centrifugal sedimentation. A total of 18 protozoan and helminth species were recorded based on the presence of cysts or eggs. These included five nematode species that could not be identified. The three common pathogenic nematodes were found to be prevalentthe hookworm, Necator americanus(96%); the whipworm, Trichuris trichiura(77%) and the large roundworm, Ascaris lumbricoides(75%). The prevalence of Ascarisamong the villages was found to vary from 56 to 100%. Individuals living in, or associated with, permanent settlements had higher prevalence and intensity rates than those living in the nomadic hunter-gatherer way. This is shown to be directly related to fecal contamination of the environment in and around permanent settlements. The prevalence of Ascarisin a population can be used as an indicator of such environmental contamination.
format Artigo
author Chernela, Janet M.
author2 Thatcher, Vernon Everet
author2Str Thatcher, Vernon Everet
title The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon
title_short The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon
title_full The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon
title_fullStr The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon
title_full_unstemmed The Efects Of Settlement On The Prevalence Of Ascarisinfection In Two Amerindian Populations Of The Brazilian Amazon
title_sort efects of settlement on the prevalence of ascarisinfection in two amerindian populations of the brazilian amazon
publisher Acta Amazonica
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/13158
_version_ 1787142731624087552
score 11.755432

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