Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae)
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Veterinária Brasileira (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2016000500436 |
Resumo: | Abstract: With aim to report the ontogeny of the osseous elements of the carapace in Peurodiras, 62 embryos and 43 nestlings of Podocnemis expansa were collected and submitted to the clearing and staining technique of bones and cartilages and study of serial histological slices. The carapace has mixed osseous structure of endo and exoskeleton, formed by 8 pairs of costal bones associated with ribs, 7 neural bones associated with neural arches, 11 pairs of peripheral bones, 1 nuchal, 1 pygal and 1 suprapygal. This structure begins its formation in the beginning of stage 16 with the ossification of the periosteal collar of the ribs. With exception of the peripheral bones, the other ones begin their ossification during the embrionary period. In histologic investigation it was found that the costal bones and neural bones have a close relation to the endoskeleton components, originating themselves as intramembranous expansions of the periosteal collar of the ribs and neural arches, respectively. The condensation of the mesenchyme adjacent to the periosteal collar induces the formation of spikes that grow in trabeculae permeated by fibroblasts below the dermis. The nuchal bone also ossifies in an intramembranous way, but does not show direct relation to the endoskeleton. Such information confirms those related to the other Pleurodira, mainly with Podocnemis unifilis, sometimes with conspicuous variations in the chronology of the ossification events. The formation of dermal plates in the carapace of Pleurodira and Criptodira follow the same pattern. |
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Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae)CarapaceGiant Amazon River TurtlePodocnemis expansaTestudinesPodocnemidaeshellontogenypleurodiraossificationturtle.Abstract: With aim to report the ontogeny of the osseous elements of the carapace in Peurodiras, 62 embryos and 43 nestlings of Podocnemis expansa were collected and submitted to the clearing and staining technique of bones and cartilages and study of serial histological slices. The carapace has mixed osseous structure of endo and exoskeleton, formed by 8 pairs of costal bones associated with ribs, 7 neural bones associated with neural arches, 11 pairs of peripheral bones, 1 nuchal, 1 pygal and 1 suprapygal. This structure begins its formation in the beginning of stage 16 with the ossification of the periosteal collar of the ribs. With exception of the peripheral bones, the other ones begin their ossification during the embrionary period. In histologic investigation it was found that the costal bones and neural bones have a close relation to the endoskeleton components, originating themselves as intramembranous expansions of the periosteal collar of the ribs and neural arches, respectively. The condensation of the mesenchyme adjacent to the periosteal collar induces the formation of spikes that grow in trabeculae permeated by fibroblasts below the dermis. The nuchal bone also ossifies in an intramembranous way, but does not show direct relation to the endoskeleton. Such information confirms those related to the other Pleurodira, mainly with Podocnemis unifilis, sometimes with conspicuous variations in the chronology of the ossification events. The formation of dermal plates in the carapace of Pleurodira and Criptodira follow the same pattern.Colégio Brasileiro de Patologia Animal - CBPA2016-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2016000500436Pesquisa Veterinária Brasileira v.36 n.5 2016reponame:Pesquisa Veterinária Brasileira (Online)instname:Colégio Brasileiro de Patologia Animal (CBPA)instacron:EMBRAPA10.1590/S0100-736X2016000500014info:eu-repo/semantics/openAccessVieira,Lucélia G.Santos,André L.Q.Moura,Léa R.Orpinelli,Stiwens R.T.Pereira,Kleber F.Lima,Fabiano C.eng2016-07-25T00:00:00Zoai:scielo:S0100-736X2016000500436Revistahttp://www.pvb.com.br/https://old.scielo.br/oai/scielo-oai.phpcolegio@cbpa.org.br||pvb@pvb.com.br0100-736X1678-5150opendoar:2016-07-25T00:00Pesquisa Veterinária Brasileira (Online) - Colégio Brasileiro de Patologia Animal (CBPA)false |
dc.title.none.fl_str_mv |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
title |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
spellingShingle |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) Vieira,Lucélia G. Carapace Giant Amazon River Turtle Podocnemis expansa Testudines Podocnemidae shell ontogeny pleurodira ossification turtle. |
title_short |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
title_full |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
title_fullStr |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
title_full_unstemmed |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
title_sort |
Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae) |
author |
Vieira,Lucélia G. |
author_facet |
Vieira,Lucélia G. Santos,André L.Q. Moura,Léa R. Orpinelli,Stiwens R.T. Pereira,Kleber F. Lima,Fabiano C. |
author_role |
author |
author2 |
Santos,André L.Q. Moura,Léa R. Orpinelli,Stiwens R.T. Pereira,Kleber F. Lima,Fabiano C. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Vieira,Lucélia G. Santos,André L.Q. Moura,Léa R. Orpinelli,Stiwens R.T. Pereira,Kleber F. Lima,Fabiano C. |
dc.subject.por.fl_str_mv |
Carapace Giant Amazon River Turtle Podocnemis expansa Testudines Podocnemidae shell ontogeny pleurodira ossification turtle. |
topic |
Carapace Giant Amazon River Turtle Podocnemis expansa Testudines Podocnemidae shell ontogeny pleurodira ossification turtle. |
description |
Abstract: With aim to report the ontogeny of the osseous elements of the carapace in Peurodiras, 62 embryos and 43 nestlings of Podocnemis expansa were collected and submitted to the clearing and staining technique of bones and cartilages and study of serial histological slices. The carapace has mixed osseous structure of endo and exoskeleton, formed by 8 pairs of costal bones associated with ribs, 7 neural bones associated with neural arches, 11 pairs of peripheral bones, 1 nuchal, 1 pygal and 1 suprapygal. This structure begins its formation in the beginning of stage 16 with the ossification of the periosteal collar of the ribs. With exception of the peripheral bones, the other ones begin their ossification during the embrionary period. In histologic investigation it was found that the costal bones and neural bones have a close relation to the endoskeleton components, originating themselves as intramembranous expansions of the periosteal collar of the ribs and neural arches, respectively. The condensation of the mesenchyme adjacent to the periosteal collar induces the formation of spikes that grow in trabeculae permeated by fibroblasts below the dermis. The nuchal bone also ossifies in an intramembranous way, but does not show direct relation to the endoskeleton. Such information confirms those related to the other Pleurodira, mainly with Podocnemis unifilis, sometimes with conspicuous variations in the chronology of the ossification events. The formation of dermal plates in the carapace of Pleurodira and Criptodira follow the same pattern. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2016000500436 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2016000500436 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-736X2016000500014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Colégio Brasileiro de Patologia Animal - CBPA |
publisher.none.fl_str_mv |
Colégio Brasileiro de Patologia Animal - CBPA |
dc.source.none.fl_str_mv |
Pesquisa Veterinária Brasileira v.36 n.5 2016 reponame:Pesquisa Veterinária Brasileira (Online) instname:Colégio Brasileiro de Patologia Animal (CBPA) instacron:EMBRAPA |
instname_str |
Colégio Brasileiro de Patologia Animal (CBPA) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Veterinária Brasileira (Online) |
collection |
Pesquisa Veterinária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Veterinária Brasileira (Online) - Colégio Brasileiro de Patologia Animal (CBPA) |
repository.mail.fl_str_mv |
colegio@cbpa.org.br||pvb@pvb.com.br |
_version_ |
1754122236015411200 |