Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2822 |
Resumo: | The digestive tract of insects is an important natural, physical, and chemical defense barrier against pathogen invasion. Certain lepidopteran caterpillars are serious pests of agricultural crops and their biology has received much attention, but little is known about the larval noctuid gut. The morphological analysis of the digestive tract in Anticarsia gemmatalis under scanning electron microscopy (SEM) is a good model for studies about its defense mechanism. The material was fixed (2,5% glutaraldehyde solution; 0.1M-phosphate buffer, pH 7.3), post-fixed (1% osmium tetroxide in the same buffer), dried at critical point, gold coated and analyzed in a SEM 515-Philips. A. gemmatalis digestive tract consists of a straight duct of varying length and diameter, subdivided in three main regions: the foregut formed by the oral cavity, pharynx, esophagus, and crop; the midgut that is the largest portion of the digestive tract without noticeable morphological differentiation along its length; and the hindgut that is morphologically differentiated in pylorus, ileum, colon, and rectum. Although the general morphology of the A. gemmatalis digestive tract is quite similar to the other Lepidoptera species, the anatomical array of the crop muscular layers is quite different comparing with the description for other larval insect. |
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Semina. Ciências Agrárias (Online) |
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Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval developmentUltramorfologia do trato digestivo de Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) no final do desenvolvimento larvalScanning electron microscopyDigestive tubeVelvet bean caterpillar.Microscopia eletrônica de varreduraTubo digestivoLagarta-da-soja.The digestive tract of insects is an important natural, physical, and chemical defense barrier against pathogen invasion. Certain lepidopteran caterpillars are serious pests of agricultural crops and their biology has received much attention, but little is known about the larval noctuid gut. The morphological analysis of the digestive tract in Anticarsia gemmatalis under scanning electron microscopy (SEM) is a good model for studies about its defense mechanism. The material was fixed (2,5% glutaraldehyde solution; 0.1M-phosphate buffer, pH 7.3), post-fixed (1% osmium tetroxide in the same buffer), dried at critical point, gold coated and analyzed in a SEM 515-Philips. A. gemmatalis digestive tract consists of a straight duct of varying length and diameter, subdivided in three main regions: the foregut formed by the oral cavity, pharynx, esophagus, and crop; the midgut that is the largest portion of the digestive tract without noticeable morphological differentiation along its length; and the hindgut that is morphologically differentiated in pylorus, ileum, colon, and rectum. Although the general morphology of the A. gemmatalis digestive tract is quite similar to the other Lepidoptera species, the anatomical array of the crop muscular layers is quite different comparing with the description for other larval insect.O trato digestivo dos insetos constitui uma importante barreira físico-química natural contra invasão de patógenos. Algumas larvas de lepidópteros são consideradas pragas agrícolas potenciais e sua biologia tem recebido muita atenção; no entanto, pouco se sabe sobre a morfologia do sistema digestivo. A análise morfológica do trato digestivo de Anticarsia gemmatalis em nível ultraestrutural é um método bastante eficaz para o estudo dos seus mecanismos de defesa. Os materiais foram fixados (solução de glutaraldeído 2,5%; 0.1M tampão fosfato, pH 7.3), pós-fixados (tetróxido de ósmio 1% no mesmo tampão), desidratados em ponto crítico, recobertos com ouro e analisados ao microscópio eletrônico de varredura 515-Philips. O trato digestivo de A. gemmatalis consiste de um tubo retilíneo de diâmetro e comprimento variável, subdividido em três regiões: intestino anterior formado pela cavidade bucal, faringe, esôfago e papo; o intestino médio que é a região mais longa do trato digestivo, sem aparente diferenciação morfológica ao longo do comprimento; e o intestino posterior que é diferenciado em piloro, íleo, cólon, e reto. Embora a morfologia geral do trato digestivo de A. gemmatalis seja bastante semelhante ao de outras espécies de Lepidoptera, o arranjo anatômico das camadas musculares do papo difere do descrito para larvas destes insetos.UEL2008-08-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/282210.5433/1679-0359.2008v29n2p313Semina: Ciências Agrárias; Vol. 29 No. 2 (2008); 313-322Semina: Ciências Agrárias; v. 29 n. 2 (2008); 313-3221679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2822/2398Levy, Sheila MicheleFalleiros, Ângela Maria FerreiraMoscardi, FlávioGregório, Elisa AparecidaToledo, Luis Antônioinfo:eu-repo/semantics/openAccess2015-11-19T18:38:48Zoai:ojs.pkp.sfu.ca:article/2822Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:38:48Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development Ultramorfologia do trato digestivo de Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) no final do desenvolvimento larval |
title |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development |
spellingShingle |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development Levy, Sheila Michele Scanning electron microscopy Digestive tube Velvet bean caterpillar. Microscopia eletrônica de varredura Tubo digestivo Lagarta-da-soja. |
title_short |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development |
title_full |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development |
title_fullStr |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development |
title_full_unstemmed |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development |
title_sort |
Ultramorphology of digestive tract of Anticarsia gemmatalis (Hübner, 1818) (Lepidoptera: Noctuidae) at final larval development |
author |
Levy, Sheila Michele |
author_facet |
Levy, Sheila Michele Falleiros, Ângela Maria Ferreira Moscardi, Flávio Gregório, Elisa Aparecida Toledo, Luis Antônio |
author_role |
author |
author2 |
Falleiros, Ângela Maria Ferreira Moscardi, Flávio Gregório, Elisa Aparecida Toledo, Luis Antônio |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Levy, Sheila Michele Falleiros, Ângela Maria Ferreira Moscardi, Flávio Gregório, Elisa Aparecida Toledo, Luis Antônio |
dc.subject.por.fl_str_mv |
Scanning electron microscopy Digestive tube Velvet bean caterpillar. Microscopia eletrônica de varredura Tubo digestivo Lagarta-da-soja. |
topic |
Scanning electron microscopy Digestive tube Velvet bean caterpillar. Microscopia eletrônica de varredura Tubo digestivo Lagarta-da-soja. |
description |
The digestive tract of insects is an important natural, physical, and chemical defense barrier against pathogen invasion. Certain lepidopteran caterpillars are serious pests of agricultural crops and their biology has received much attention, but little is known about the larval noctuid gut. The morphological analysis of the digestive tract in Anticarsia gemmatalis under scanning electron microscopy (SEM) is a good model for studies about its defense mechanism. The material was fixed (2,5% glutaraldehyde solution; 0.1M-phosphate buffer, pH 7.3), post-fixed (1% osmium tetroxide in the same buffer), dried at critical point, gold coated and analyzed in a SEM 515-Philips. A. gemmatalis digestive tract consists of a straight duct of varying length and diameter, subdivided in three main regions: the foregut formed by the oral cavity, pharynx, esophagus, and crop; the midgut that is the largest portion of the digestive tract without noticeable morphological differentiation along its length; and the hindgut that is morphologically differentiated in pylorus, ileum, colon, and rectum. Although the general morphology of the A. gemmatalis digestive tract is quite similar to the other Lepidoptera species, the anatomical array of the crop muscular layers is quite different comparing with the description for other larval insect. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-08-30 |
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://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2822 10.5433/1679-0359.2008v29n2p313 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2822 |
identifier_str_mv |
10.5433/1679-0359.2008v29n2p313 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2822/2398 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 29 No. 2 (2008); 313-322 Semina: Ciências Agrárias; v. 29 n. 2 (2008); 313-322 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306055319027712 |