Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico
Field evaluations of Bacillus thuringiensis Berliner serotype 14 and the nematode Steinernema feltiae Filipjev 1934 (=Neoaplectana carpocapsae) were conducted against Simulium ocharaceum Walker and other simuliid vectors of onchocerciasis in Mexico.B. thuringiensis was highly toxic, causing up to 100 % larval mortality, but only for short distances downstream. Increased dosage did not enhance downstream carry ofB. thuringiensis. Highest rates of mortality were recorded against early instar larvae. Stream treatment withS. feltiae did not result in significant larval mortality because the infectivestage nematodes were either not ingested or were injured during ingestion by the larval mouthparts.
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Subjects: | Control de vectores, Insectos vectores, Steinernema feltiae, Entomología médica, Simulium ochraceum, Oncocercosis, Control biológico de plagas, |
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KOHA-OAI-ECOSUR:186862023-05-26T11:29:42ZAssessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico Gaugler, R. Kaplan, B. autor/a Alvarado Flores, César autor/a 22266 Montoya Palacios, Julio C. autor/a 22393 Ortega Gutiérrez, Mauricio Doctor autor/a 15051 textengField evaluations of Bacillus thuringiensis Berliner serotype 14 and the nematode Steinernema feltiae Filipjev 1934 (=Neoaplectana carpocapsae) were conducted against Simulium ocharaceum Walker and other simuliid vectors of onchocerciasis in Mexico.B. thuringiensis was highly toxic, causing up to 100 % larval mortality, but only for short distances downstream. Increased dosage did not enhance downstream carry ofB. thuringiensis. Highest rates of mortality were recorded against early instar larvae. Stream treatment withS. feltiae did not result in significant larval mortality because the infectivestage nematodes were either not ingested or were injured during ingestion by the larval mouthparts.Des expérimentations dans la nature avec Bacillus thuringiensis Berliner, serotype 14, et le nématode Steinernema feltiae Filipjev (=Neoaplectana feltiae) ont été réalisées contre Simulium ochraceum Walker et d'autres simulies vectrices de l'onchocercose au Mexique.B. thuringiensis a été fortement toxique et a provoqué jusqu'à 100 % de mortalité mais seulement sur de courtes distances dans le courant. L'augmentation des doses n'a pas entraîné d'amélioration. Les taux de mortalité les plus élevés furent obtenus chez les larves des jeunes stades. le traitement du cours d'eau avecS. feltiae n'a pas abouti à une mortalité significative parce que les stades infestants du nématode étaient soit non ingérés, soit lésés lors de l'ingestion par les pièces buccales des larves.Field evaluations of Bacillus thuringiensis Berliner serotype 14 and the nematode Steinernema feltiae Filipjev 1934 (=Neoaplectana carpocapsae) were conducted against Simulium ocharaceum Walker and other simuliid vectors of onchocerciasis in Mexico.B. thuringiensis was highly toxic, causing up to 100 % larval mortality, but only for short distances downstream. Increased dosage did not enhance downstream carry ofB. thuringiensis. Highest rates of mortality were recorded against early instar larvae. Stream treatment withS. feltiae did not result in significant larval mortality because the infectivestage nematodes were either not ingested or were injured during ingestion by the larval mouthparts.Des expérimentations dans la nature avec Bacillus thuringiensis Berliner, serotype 14, et le nématode Steinernema feltiae Filipjev (=Neoaplectana feltiae) ont été réalisées contre Simulium ochraceum Walker et d'autres simulies vectrices de l'onchocercose au Mexique.B. thuringiensis a été fortement toxique et a provoqué jusqu'à 100 % de mortalité mais seulement sur de courtes distances dans le courant. L'augmentation des doses n'a pas entraîné d'amélioration. Les taux de mortalité les plus élevés furent obtenus chez les larves des jeunes stades. le traitement du cours d'eau avecS. feltiae n'a pas abouti à une mortalité significative parce que les stades infestants du nématode étaient soit non ingérés, soit lésés lors de l'ingestion par les pièces buccales des larves.Adobe Acrobat profesional 6.0 o superiorControl de vectoresInsectos vectoresSteinernema feltiaeEntomología médicaSimulium ochraceumOncocercosisControl biológico de plagasDisponible en líneaEntomophagaDisponible para usuarios de ECOSUR con su clave de acceso |
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México |
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MX |
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biblioteca |
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America del Norte |
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Sistema de Información Bibliotecario de ECOSUR (SIBE) |
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eng |
topic |
Control de vectores Insectos vectores Steinernema feltiae Entomología médica Simulium ochraceum Oncocercosis Control biológico de plagas Control de vectores Insectos vectores Steinernema feltiae Entomología médica Simulium ochraceum Oncocercosis Control biológico de plagas |
spellingShingle |
Control de vectores Insectos vectores Steinernema feltiae Entomología médica Simulium ochraceum Oncocercosis Control biológico de plagas Control de vectores Insectos vectores Steinernema feltiae Entomología médica Simulium ochraceum Oncocercosis Control biológico de plagas Gaugler, R. Kaplan, B. autor/a Alvarado Flores, César autor/a 22266 Montoya Palacios, Julio C. autor/a 22393 Ortega Gutiérrez, Mauricio Doctor autor/a 15051 Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico |
description |
Field evaluations of Bacillus thuringiensis Berliner serotype 14 and the nematode Steinernema feltiae Filipjev 1934 (=Neoaplectana carpocapsae) were conducted against Simulium ocharaceum Walker and other simuliid vectors of onchocerciasis in Mexico.B. thuringiensis was highly toxic, causing up to 100 % larval mortality, but only for short distances downstream. Increased dosage did not enhance downstream carry ofB. thuringiensis. Highest rates of mortality were recorded against early instar larvae. Stream treatment withS. feltiae did not result in significant larval mortality because the infectivestage nematodes were either not ingested or were injured during ingestion by the larval mouthparts. |
format |
Texto |
topic_facet |
Control de vectores Insectos vectores Steinernema feltiae Entomología médica Simulium ochraceum Oncocercosis Control biológico de plagas |
author |
Gaugler, R. Kaplan, B. autor/a Alvarado Flores, César autor/a 22266 Montoya Palacios, Julio C. autor/a 22393 Ortega Gutiérrez, Mauricio Doctor autor/a 15051 |
author_facet |
Gaugler, R. Kaplan, B. autor/a Alvarado Flores, César autor/a 22266 Montoya Palacios, Julio C. autor/a 22393 Ortega Gutiérrez, Mauricio Doctor autor/a 15051 |
author_sort |
Gaugler, R. |
title |
Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico |
title_short |
Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico |
title_full |
Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico |
title_fullStr |
Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico |
title_full_unstemmed |
Assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in Mexico |
title_sort |
assessment of bacillus thuringiensis serotype 14 and steinernema feltiae (nematoda: steinernematidae) for control of the simulium vectors of onchocerciasis in mexico |
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