Extraembryonic membrane morphology in greater rheas ( Rhea americana americana Linnaeus, 1758).

Autor: Gadelha AIBB; Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.; Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.; Masters Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., de Oliveira MF; Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., de Sousa ACFC; Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., Diniz JARA; Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.; Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.; Doctoral Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., Lopes IRG; Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.; Department of Animal Sciences, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.; Doctoral Program in Development and Environment, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., Fernandes BCC; Department of Phytotechny, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., Pereira AF; Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil., de Moura CEB; Postgraduate Program in Animal Science, Federal Rural University of Semi-Árido, Rio Grande do Norte Mossoró, Brazil.
Jazyk: angličtina
Zdroj: Zoomorphology [Zoomorphology] 2023 Mar 20, pp. 1-16. Date of Electronic Publication: 2023 Mar 20.
DOI: 10.1007/s00435-023-00602-x
Abstrakt: The greater rhea, Rhea americana , is a wild ratite of high scientific importance and significant and zootechnical value, especially considering the current development state of Brazilian poultry production, where research aimed at increasing the productivity of these animals has become extremely relevant. Studies concerning fetal attachments and embryonic development are paramount, as they can provide essential information concerning reproductive and nutritional animal management. However, a lack of information on greater rhea fetal morphology is noted. Therefore, the aim of the present study was to establish a standard model for fetal attachments in this species. Greater rhea eggs were incubated from 0 to 36 days, and macroscopic and microscopic embryonic attachment characterizations were performed. Histologically, all embryonic annexes exhibit germ layers, namely the ectoderm (outer layer), mesoderm (middle layer) and endoderm (inner layer). The findings indicate that greater rhea development patterns are similar to other birds.
Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest.
(© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
Databáze: MEDLINE
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