Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium
- Autores
- Krmpotic, Cecilia Mariana; Galliari, Fernando Carlos; Barbeito, Claudio Gustavo; Carlini, Alfredo Armando
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The integument of extant armadillos (Xenarthra, Cingulata) is a unique organ in which complex glandular systems are associated with pilose follicles, dermal ossifications, and cornified scales. Up to date, papers have focused on neither comparative morphology of the skin (dorsal and ventral) nor chronology of the development of interspecific homolog structures. In order to clarify the way in which events occur during development of the integument structures, maturity of other tissues (e.g. skeletal tissues) should be considered. Therefore, we will be able to identify events that have been pre- or post-displaced during ontogenetic development. The aim of this paper is to describe in a developmental and comparative framework the integumentary system of neonates of Dasypus hybridus and Chaetophractus vellerosus. In order to understand the morphology of the different integumentary structures serial histological sections were prepared. Staining techniques included H–E, Masson Trichrome, PAS, orcein and reticulin. To study ossification of postcranial elements, the specimens were cleared and double-stained with alcian blue and alizarin red. Determinations of ossification centers and their progress were recorded through the early uptake of alizarin. The dorsal dermis of neonates from D. hybridus is clearly differentiated into a superficial and deep layer, as in fetuses of Dasypus novemcinctus. In C. vellerosus, however, these layers could not be identified. This suggests a less connective tissue differentiation in the latter species at this stage. Osteoderms in D. hybridus are well differentiated unlike C. vellerosus where no condensations of osteoprogenitory cells are observed. Conversely, pilose follicles and glandular tissues are less developed in D. hybridus. Regarding postcranial elements, ossification centers are less advanced in C. vellerosus than D. hybridus, this is particularly notorious for the vertebral column, sternal, and pelvic girdle elements. Asynchronies between neonates of both species observed on integumentary and postcranial skeletal tissues could match with specific adaptive strategies related to distribution in different environments, and/or different postnatal care.
Facultad de Ciencias Naturales y Museo
Facultad de Ciencias Veterinarias - Materia
-
Ciencias Naturales
Veterinaria
Dasypodidae
Integument
Osteoderm
Postcranium
Neonates - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/137078
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Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcraniumKrmpotic, Cecilia MarianaGalliari, Fernando CarlosBarbeito, Claudio GustavoCarlini, Alfredo ArmandoCiencias NaturalesVeterinariaDasypodidaeIntegumentOsteodermPostcraniumNeonatesThe integument of extant armadillos (Xenarthra, Cingulata) is a unique organ in which complex glandular systems are associated with pilose follicles, dermal ossifications, and cornified scales. Up to date, papers have focused on neither comparative morphology of the skin (dorsal and ventral) nor chronology of the development of interspecific homolog structures. In order to clarify the way in which events occur during development of the integument structures, maturity of other tissues (e.g. skeletal tissues) should be considered. Therefore, we will be able to identify events that have been pre- or post-displaced during ontogenetic development. The aim of this paper is to describe in a developmental and comparative framework the integumentary system of neonates of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>. In order to understand the morphology of the different integumentary structures serial histological sections were prepared. Staining techniques included H–E, Masson Trichrome, PAS, orcein and reticulin. To study ossification of postcranial elements, the specimens were cleared and double-stained with alcian blue and alizarin red. Determinations of ossification centers and their progress were recorded through the early uptake of alizarin. The dorsal dermis of neonates from <i>D. hybridus</i> is clearly differentiated into a superficial and deep layer, as in fetuses of <i>Dasypus novemcinctus</i>. In <i>C. vellerosus</i>, however, these layers could not be identified. This suggests a less connective tissue differentiation in the latter species at this stage. Osteoderms in <i>D. hybridus</i> are well differentiated unlike <i>C. vellerosus</i> where no condensations of osteoprogenitory cells are observed. Conversely, pilose follicles and glandular tissues are less developed in <i>D. hybridus</i>. Regarding postcranial elements, ossification centers are less advanced in <i>C. vellerosus</i> than <i>D. hybridus</i>, this is particularly notorious for the vertebral column, sternal, and pelvic girdle elements. Asynchronies between neonates of both species observed on integumentary and postcranial skeletal tissues could match with specific adaptive strategies related to distribution in different environments, and/or different postnatal care.Facultad de Ciencias Naturales y MuseoFacultad de Ciencias Veterinarias2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf314-326http://sedici.unlp.edu.ar/handle/10915/137078enginfo:eu-repo/semantics/altIdentifier/issn/1616-5047info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mambio.2012.02.008info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:02Zoai:sedici.unlp.edu.ar:10915/137078Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:02.427SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
title |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
spellingShingle |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium Krmpotic, Cecilia Mariana Ciencias Naturales Veterinaria Dasypodidae Integument Osteoderm Postcranium Neonates |
title_short |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
title_full |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
title_fullStr |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
title_full_unstemmed |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
title_sort |
Development of the integument of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>, and asynchronous events with respect to the postcranium |
dc.creator.none.fl_str_mv |
Krmpotic, Cecilia Mariana Galliari, Fernando Carlos Barbeito, Claudio Gustavo Carlini, Alfredo Armando |
author |
Krmpotic, Cecilia Mariana |
author_facet |
Krmpotic, Cecilia Mariana Galliari, Fernando Carlos Barbeito, Claudio Gustavo Carlini, Alfredo Armando |
author_role |
author |
author2 |
Galliari, Fernando Carlos Barbeito, Claudio Gustavo Carlini, Alfredo Armando |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Veterinaria Dasypodidae Integument Osteoderm Postcranium Neonates |
topic |
Ciencias Naturales Veterinaria Dasypodidae Integument Osteoderm Postcranium Neonates |
dc.description.none.fl_txt_mv |
The integument of extant armadillos (Xenarthra, Cingulata) is a unique organ in which complex glandular systems are associated with pilose follicles, dermal ossifications, and cornified scales. Up to date, papers have focused on neither comparative morphology of the skin (dorsal and ventral) nor chronology of the development of interspecific homolog structures. In order to clarify the way in which events occur during development of the integument structures, maturity of other tissues (e.g. skeletal tissues) should be considered. Therefore, we will be able to identify events that have been pre- or post-displaced during ontogenetic development. The aim of this paper is to describe in a developmental and comparative framework the integumentary system of neonates of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>. In order to understand the morphology of the different integumentary structures serial histological sections were prepared. Staining techniques included H–E, Masson Trichrome, PAS, orcein and reticulin. To study ossification of postcranial elements, the specimens were cleared and double-stained with alcian blue and alizarin red. Determinations of ossification centers and their progress were recorded through the early uptake of alizarin. The dorsal dermis of neonates from <i>D. hybridus</i> is clearly differentiated into a superficial and deep layer, as in fetuses of <i>Dasypus novemcinctus</i>. In <i>C. vellerosus</i>, however, these layers could not be identified. This suggests a less connective tissue differentiation in the latter species at this stage. Osteoderms in <i>D. hybridus</i> are well differentiated unlike <i>C. vellerosus</i> where no condensations of osteoprogenitory cells are observed. Conversely, pilose follicles and glandular tissues are less developed in <i>D. hybridus</i>. Regarding postcranial elements, ossification centers are less advanced in <i>C. vellerosus</i> than <i>D. hybridus</i>, this is particularly notorious for the vertebral column, sternal, and pelvic girdle elements. Asynchronies between neonates of both species observed on integumentary and postcranial skeletal tissues could match with specific adaptive strategies related to distribution in different environments, and/or different postnatal care. Facultad de Ciencias Naturales y Museo Facultad de Ciencias Veterinarias |
description |
The integument of extant armadillos (Xenarthra, Cingulata) is a unique organ in which complex glandular systems are associated with pilose follicles, dermal ossifications, and cornified scales. Up to date, papers have focused on neither comparative morphology of the skin (dorsal and ventral) nor chronology of the development of interspecific homolog structures. In order to clarify the way in which events occur during development of the integument structures, maturity of other tissues (e.g. skeletal tissues) should be considered. Therefore, we will be able to identify events that have been pre- or post-displaced during ontogenetic development. The aim of this paper is to describe in a developmental and comparative framework the integumentary system of neonates of <i>Dasypus hybridus</i> and <i>Chaetophractus vellerosus</i>. In order to understand the morphology of the different integumentary structures serial histological sections were prepared. Staining techniques included H–E, Masson Trichrome, PAS, orcein and reticulin. To study ossification of postcranial elements, the specimens were cleared and double-stained with alcian blue and alizarin red. Determinations of ossification centers and their progress were recorded through the early uptake of alizarin. The dorsal dermis of neonates from <i>D. hybridus</i> is clearly differentiated into a superficial and deep layer, as in fetuses of <i>Dasypus novemcinctus</i>. In <i>C. vellerosus</i>, however, these layers could not be identified. This suggests a less connective tissue differentiation in the latter species at this stage. Osteoderms in <i>D. hybridus</i> are well differentiated unlike <i>C. vellerosus</i> where no condensations of osteoprogenitory cells are observed. Conversely, pilose follicles and glandular tissues are less developed in <i>D. hybridus</i>. Regarding postcranial elements, ossification centers are less advanced in <i>C. vellerosus</i> than <i>D. hybridus</i>, this is particularly notorious for the vertebral column, sternal, and pelvic girdle elements. Asynchronies between neonates of both species observed on integumentary and postcranial skeletal tissues could match with specific adaptive strategies related to distribution in different environments, and/or different postnatal care. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/137078 |
url |
http://sedici.unlp.edu.ar/handle/10915/137078 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/1616-5047 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mambio.2012.02.008 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
dc.format.none.fl_str_mv |
application/pdf 314-326 |
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