Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions

Detalhes bibliográficos
Autor(a) principal: Lima, Marli Maria
Data de Publicação: 1992
Outros Autores: Rey, Luis, Mello, Rubens Pinto de
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/28936
Resumo: The lethal effect of a bait containing an aqueous hexachlorocyclohexane (HCH) suspension at the concentration of 1g/l and maintained at room temperature was studied in the laboratory over a period of 12 weeks. The suspension was placed in a latex bag hanging inside a 1000-ml beaker tightly covered with nylon netting, and left there with no changes for 85 days. Sixteen groups of R. prolixas bugs, consisting on average of 30 specimens each, were successively exposed to the bait and observed at different intervals for one week each. The mortality rate was 100% for all groups, except for the 16th, whose mortality rate was 96.7%. As the groups succeeded one another, mortality started to occur more rapidly and was more marked at the 6- and 24-h intervals. Later tests respectively started at 6:00 a.m. and 6:00 p.m. showed that diurnal and nocturnal periodicity in the offer of food had no effect on mortality. First- and 2nd- instar nymphs and adults male were more sensitive and 5th- instar nymphs were more resistant to the active principle of the bait.
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spelling Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions Efeito letal de uma isca para Rhodnhis prolixus (Hemiptera: Reduviidae) vetor da doença de Chagas, contendo Hexaclorociclohexano (HCH), em condições de laboratório TrypanosomiasisTriatominesRhodnius prolixusInsecticideHexachlorocyclohexaneLethality rateInsect control The lethal effect of a bait containing an aqueous hexachlorocyclohexane (HCH) suspension at the concentration of 1g/l and maintained at room temperature was studied in the laboratory over a period of 12 weeks. The suspension was placed in a latex bag hanging inside a 1000-ml beaker tightly covered with nylon netting, and left there with no changes for 85 days. Sixteen groups of R. prolixas bugs, consisting on average of 30 specimens each, were successively exposed to the bait and observed at different intervals for one week each. The mortality rate was 100% for all groups, except for the 16th, whose mortality rate was 96.7%. As the groups succeeded one another, mortality started to occur more rapidly and was more marked at the 6- and 24-h intervals. Later tests respectively started at 6:00 a.m. and 6:00 p.m. showed that diurnal and nocturnal periodicity in the offer of food had no effect on mortality. First- and 2nd- instar nymphs and adults male were more sensitive and 5th- instar nymphs were more resistant to the active principle of the bait. O efeito letal de uma isca para R. prolixus, contendo suspensão aquosa de Hexaclorociclohexano (HCH), na concentração de 1g/l e mantida em temperatura ambiente, foi estudado no laboratório, por um período de 12 semanas. A suspensão foi colocada em uma bolsa de latex, que ficou sempre com o mesmo conteúdo durante 85 dias, pendurada na parede de um becker de 1000ml. Dezesseis grupos de R. prolixus, com média de 30 exemplares cada, sucederam-se um após o outro, sendo cada grupo observado em diferentes intervalos de tempo, durante uma semana. A taxa de mortalidade foi de 100% em todos os grupos, exceto no 16º, que apresentou 96,7% de mortes nesse intervalo de tempo. À medida que os grupos se sucediam, a mortalidade passou a ocorrer mais rapidamente, acentuando-se no intervalo de 6h a 24h. Testes posteriores, um com início às 6h e outro às 18h, mostraram que a periodicidade (diurna e noturna) na oferta do alimento não interferiu na mortalidade. As ninfas de 1º e 2º instares e adultos foram mais sensíveis e as de 5º instar mais resistentes ao inseticida. Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo1992-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rimtsp/article/view/28936Revista do Instituto de Medicina Tropical de São Paulo; Vol. 34 No. 4 (1992); 295-301 Revista do Instituto de Medicina Tropical de São Paulo; Vol. 34 Núm. 4 (1992); 295-301 Revista do Instituto de Medicina Tropical de São Paulo; v. 34 n. 4 (1992); 295-301 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/28936/30793Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Pauloinfo:eu-repo/semantics/openAccessLima, Marli MariaRey, LuisMello, Rubens Pinto de2012-07-02T01:33:12Zoai:revistas.usp.br:article/28936Revistahttp://www.revistas.usp.br/rimtsp/indexPUBhttps://www.revistas.usp.br/rimtsp/oai||revimtsp@usp.br1678-99460036-4665opendoar:2022-12-13T16:50:42.101685Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT)true
dc.title.none.fl_str_mv Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
Efeito letal de uma isca para Rhodnhis prolixus (Hemiptera: Reduviidae) vetor da doença de Chagas, contendo Hexaclorociclohexano (HCH), em condições de laboratório
title Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
spellingShingle Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
Lima, Marli Maria
Trypanosomiasis
Triatomines
Rhodnius prolixus
Insecticide
Hexachlorocyclohexane
Lethality rate
Insect control
title_short Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
title_full Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
title_fullStr Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
title_full_unstemmed Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
title_sort Lethal effect of a bait for Rhodnius prolixus (Hemiptera: Reduviidae), the vector of Chagas' disease, containing hexachlorocyclohexane (HCH), under laboratory conditions
author Lima, Marli Maria
author_facet Lima, Marli Maria
Rey, Luis
Mello, Rubens Pinto de
author_role author
author2 Rey, Luis
Mello, Rubens Pinto de
author2_role author
author
dc.contributor.author.fl_str_mv Lima, Marli Maria
Rey, Luis
Mello, Rubens Pinto de
dc.subject.por.fl_str_mv Trypanosomiasis
Triatomines
Rhodnius prolixus
Insecticide
Hexachlorocyclohexane
Lethality rate
Insect control
topic Trypanosomiasis
Triatomines
Rhodnius prolixus
Insecticide
Hexachlorocyclohexane
Lethality rate
Insect control
description The lethal effect of a bait containing an aqueous hexachlorocyclohexane (HCH) suspension at the concentration of 1g/l and maintained at room temperature was studied in the laboratory over a period of 12 weeks. The suspension was placed in a latex bag hanging inside a 1000-ml beaker tightly covered with nylon netting, and left there with no changes for 85 days. Sixteen groups of R. prolixas bugs, consisting on average of 30 specimens each, were successively exposed to the bait and observed at different intervals for one week each. The mortality rate was 100% for all groups, except for the 16th, whose mortality rate was 96.7%. As the groups succeeded one another, mortality started to occur more rapidly and was more marked at the 6- and 24-h intervals. Later tests respectively started at 6:00 a.m. and 6:00 p.m. showed that diurnal and nocturnal periodicity in the offer of food had no effect on mortality. First- and 2nd- instar nymphs and adults male were more sensitive and 5th- instar nymphs were more resistant to the active principle of the bait.
publishDate 1992
dc.date.none.fl_str_mv 1992-08-01
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/28936
url https://www.revistas.usp.br/rimtsp/article/view/28936
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/rimtsp/article/view/28936/30793
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. 34 No. 4 (1992); 295-301
Revista do Instituto de Medicina Tropical de São Paulo; Vol. 34 Núm. 4 (1992); 295-301
Revista do Instituto de Medicina Tropical de São Paulo; v. 34 n. 4 (1992); 295-301
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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