Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development

Autores
Ibáñez, Cecilia I.; Bozzini, Juan Pablo; Mariano, Marta
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The post-embryonic development of the female gonads in Triatoma infestans (Hemiptera, Heteroptera), insects of importance in health affairs as harbors and vectors of different tripanosomatidea flagellates, is presented in a complete follow-up since insect hatches from the egg up to the last molt in the fifth instar stage. The detailed description of the morphological changes which occur in each instar as well as careful measurements evaluating its size increase have been analyzed by stereomicroscopy, phase contrast, dark field, and oblique illumination, in order to optimize the observations as well the photographic register of gonad morphology and structure. The analysis was performed on gonad specimens obtained from broods no less than twenty (20) nymph bugs, reared at constant temperature and fed-up regularly. According to the results of our study we can assert that gonad differentiation takes place in early phases of the insect development. Such is the case that first instars nymph's present absolutely and easily recognizably male and female gonads. From the third instar on beside the filament region, the three zones in each ovariole body is distinguished, a differentiation that is more noticeable during the fourth instar where a definite organization is present at the vitelarium. Such a clear cut zone development continues intensively during the fifth instar. Finally at the end of such fifth nymph stage and when the last molt toward adults is prepared, clear signs of ovariole maturation take place since oocytes in early vitelogenesis are found.
Fil: Ibáñez, Cecilia I. ANLIS Dr.C.G.Malbrán; Argentina.
Fil: Bozzini, Juan Pablo. ANLIS Dr.C.G.Malbrán; Argentina.
Fil: Mariano, Marta. ANLIS Dr.C.G.Malbrán; Argentina.
Fuente
Biocell, 2004, 28(3), 259–269.
Materia
Ovario
Hemípteros
Insectos
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Sistema de Gestión del Conocimiento ANLIS MALBRÁN
Institución
Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"
OAI Identificador
oai:sgc.anlis.gob.ar:123456789/364

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network_acronym_str SGCANLIS
repository_id_str a
network_name_str Sistema de Gestión del Conocimiento ANLIS MALBRÁN
spelling Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic developmentIbáñez, Cecilia I.Bozzini, Juan PabloMariano, MartaOvarioHemípterosInsectosThe post-embryonic development of the female gonads in Triatoma infestans (Hemiptera, Heteroptera), insects of importance in health affairs as harbors and vectors of different tripanosomatidea flagellates, is presented in a complete follow-up since insect hatches from the egg up to the last molt in the fifth instar stage. The detailed description of the morphological changes which occur in each instar as well as careful measurements evaluating its size increase have been analyzed by stereomicroscopy, phase contrast, dark field, and oblique illumination, in order to optimize the observations as well the photographic register of gonad morphology and structure. The analysis was performed on gonad specimens obtained from broods no less than twenty (20) nymph bugs, reared at constant temperature and fed-up regularly. According to the results of our study we can assert that gonad differentiation takes place in early phases of the insect development. Such is the case that first instars nymph's present absolutely and easily recognizably male and female gonads. From the third instar on beside the filament region, the three zones in each ovariole body is distinguished, a differentiation that is more noticeable during the fourth instar where a definite organization is present at the vitelarium. Such a clear cut zone development continues intensively during the fifth instar. Finally at the end of such fifth nymph stage and when the last molt toward adults is prepared, clear signs of ovariole maturation take place since oocytes in early vitelogenesis are found.Fil: Ibáñez, Cecilia I. ANLIS Dr.C.G.Malbrán; Argentina.Fil: Bozzini, Juan Pablo. ANLIS Dr.C.G.Malbrán; Argentina.Fil: Mariano, Marta. ANLIS Dr.C.G.Malbrán; Argentina.2004info:ar-repo/semantics/articuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://sgc.anlis.gob.ar/handle/123456789/364http://www.scielo.org.ar/pdf/biocell/v28n3/v28n3a02.pdfBiocell, 2004, 28(3), 259–269.reponame:Sistema de Gestión del Conocimiento ANLIS MALBRÁNinstname:Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"instacron:ANLISenginfo:eu-repo/semantics/openAccess2025-09-29T14:29:59Zoai:sgc.anlis.gob.ar:123456789/364Institucionalhttp://sgc.anlis.gob.ar/Organismo científico-tecnológicoNo correspondehttp://sgc.anlis.gob.ar/oai/biblioteca@anlis.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2025-09-29 14:30:00.318Sistema de Gestión del Conocimiento ANLIS MALBRÁN - Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"false
dc.title.none.fl_str_mv Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
title Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
spellingShingle Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
Ibáñez, Cecilia I.
Ovario
Hemípteros
Insectos
title_short Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
title_full Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
title_fullStr Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
title_full_unstemmed Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
title_sort Differentiation and morphogenesis of Triatoma infestans (Klug 1834) female gonads. I - Post embryonic development
dc.creator.none.fl_str_mv Ibáñez, Cecilia I.
Bozzini, Juan Pablo
Mariano, Marta
author Ibáñez, Cecilia I.
author_facet Ibáñez, Cecilia I.
Bozzini, Juan Pablo
Mariano, Marta
author_role author
author2 Bozzini, Juan Pablo
Mariano, Marta
author2_role author
author
dc.subject.none.fl_str_mv Ovario
Hemípteros
Insectos
topic Ovario
Hemípteros
Insectos
dc.description.none.fl_txt_mv The post-embryonic development of the female gonads in Triatoma infestans (Hemiptera, Heteroptera), insects of importance in health affairs as harbors and vectors of different tripanosomatidea flagellates, is presented in a complete follow-up since insect hatches from the egg up to the last molt in the fifth instar stage. The detailed description of the morphological changes which occur in each instar as well as careful measurements evaluating its size increase have been analyzed by stereomicroscopy, phase contrast, dark field, and oblique illumination, in order to optimize the observations as well the photographic register of gonad morphology and structure. The analysis was performed on gonad specimens obtained from broods no less than twenty (20) nymph bugs, reared at constant temperature and fed-up regularly. According to the results of our study we can assert that gonad differentiation takes place in early phases of the insect development. Such is the case that first instars nymph's present absolutely and easily recognizably male and female gonads. From the third instar on beside the filament region, the three zones in each ovariole body is distinguished, a differentiation that is more noticeable during the fourth instar where a definite organization is present at the vitelarium. Such a clear cut zone development continues intensively during the fifth instar. Finally at the end of such fifth nymph stage and when the last molt toward adults is prepared, clear signs of ovariole maturation take place since oocytes in early vitelogenesis are found.
Fil: Ibáñez, Cecilia I. ANLIS Dr.C.G.Malbrán; Argentina.
Fil: Bozzini, Juan Pablo. ANLIS Dr.C.G.Malbrán; Argentina.
Fil: Mariano, Marta. ANLIS Dr.C.G.Malbrán; Argentina.
description The post-embryonic development of the female gonads in Triatoma infestans (Hemiptera, Heteroptera), insects of importance in health affairs as harbors and vectors of different tripanosomatidea flagellates, is presented in a complete follow-up since insect hatches from the egg up to the last molt in the fifth instar stage. The detailed description of the morphological changes which occur in each instar as well as careful measurements evaluating its size increase have been analyzed by stereomicroscopy, phase contrast, dark field, and oblique illumination, in order to optimize the observations as well the photographic register of gonad morphology and structure. The analysis was performed on gonad specimens obtained from broods no less than twenty (20) nymph bugs, reared at constant temperature and fed-up regularly. According to the results of our study we can assert that gonad differentiation takes place in early phases of the insect development. Such is the case that first instars nymph's present absolutely and easily recognizably male and female gonads. From the third instar on beside the filament region, the three zones in each ovariole body is distinguished, a differentiation that is more noticeable during the fourth instar where a definite organization is present at the vitelarium. Such a clear cut zone development continues intensively during the fifth instar. Finally at the end of such fifth nymph stage and when the last molt toward adults is prepared, clear signs of ovariole maturation take place since oocytes in early vitelogenesis are found.
publishDate 2004
dc.date.none.fl_str_mv 2004
dc.type.none.fl_str_mv info:ar-repo/semantics/articulo
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sgc.anlis.gob.ar/handle/123456789/364
http://www.scielo.org.ar/pdf/biocell/v28n3/v28n3a02.pdf
url http://sgc.anlis.gob.ar/handle/123456789/364
http://www.scielo.org.ar/pdf/biocell/v28n3/v28n3a02.pdf
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Biocell, 2004, 28(3), 259–269.
reponame:Sistema de Gestión del Conocimiento ANLIS MALBRÁN
instname:Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"
instacron:ANLIS
reponame_str Sistema de Gestión del Conocimiento ANLIS MALBRÁN
collection Sistema de Gestión del Conocimiento ANLIS MALBRÁN
instname_str Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"
instacron_str ANLIS
institution ANLIS
repository.name.fl_str_mv Sistema de Gestión del Conocimiento ANLIS MALBRÁN - Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán"
repository.mail.fl_str_mv biblioteca@anlis.gov.ar
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