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Ultrastructure of eggshell and embryological development of Salvator merianae (Squamata: Teiidae).
Arrieta, María Belén; Olea, Gabriela Beatriz; Rodríguez, Florencia Evelyn; Lombardo, Daniel Marcelo.
Afiliação
  • Arrieta MB; Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Cátedra de Química Biológica, Corrientes, Argentina.
  • Olea GB; Facultad de Medicina, Laboratorio de Investigaciones Bioquímicas (LIBIM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Nordeste, Corrientes, Argentina.
  • Rodríguez FE; Facultad de Medicina, Laboratorio de Investigaciones Bioquímicas (LIBIM), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Nordeste, Corrientes, Argentina.
  • Lombardo DM; Facultad de Cs Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Cátedra de Histología y Embriología, Universidad de Buenos Aires, Buenos Aires, Argentina.
Anat Rec (Hoboken) ; 304(7): 1420-1438, 2021 07.
Article em En | MEDLINE | ID: mdl-33099895
The objective of this study was to characterize the external morphology of Salvator meriane embryos in different stages of embryonic development and establish a relationship with the ultrastructure of the shell from oviductal transit to hatching. A total of 120 embryos were analyzed to describe their external morphology, and 78 eggs were used for the analysis of the shell. For embryonic development, the series was established according to the total length of the body. We established 40 embryonic stages from the primitive streak. In the early stages, the external morphological features are the C-shaped body, the maxillary, and mandibular fusion processes with the frontal process and the fusion of the forelimb with the digital plate. In the middle stages, the eyelid appears, and there are claws on the toes, cornification of fingers, and the onset of pigmentation. The last stage of embryonic development is characterized by the beginning of the formation of the scales, appear the toenails, and finalize the entire pigmentation. Regarding the relationship that exists with the ultrastructure of the egg during development, it was possible to observe a marked change in the composition of the shell and well-marked compaction during embryonic development, which may be related to the transport of calcium during embryonic ossification. Our results allowed us to show the complete sequence of embryonic development, determining the laying stage for this species. It was possible to establish a relationship with the ultrastructure of the eggshell from the oviductal transit to the moment of hatching.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Desenvolvimento Embrionário / Casca de Ovo / Lagartos Limite: Animals Idioma: En Revista: Anat Rec (Hoboken) Assunto da revista: ANATOMIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Argentina País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Desenvolvimento Embrionário / Casca de Ovo / Lagartos Limite: Animals Idioma: En Revista: Anat Rec (Hoboken) Assunto da revista: ANATOMIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Argentina País de publicação: Estados Unidos