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Morphometry of the heart of greater rhea (Rhea americana americana, Linnaeus, 1758).

Authors
  • Borges, Ryshely Sonaly De Moura1
  • Medeiros, Andre De Macedo1
  • Silva, Joelma Gomes da1
  • Paiva, Ruana Rafaela Lira Torquato1
  • Costa, Herson da Silva1
  • Oliveira, Moacir Franco de1
  • Moura, Carlos Eduardo Bezerra de1
  • 1 Research and Innovation Group on Morphophysiological Studies, Department of Animal Science, Universidade Federal Rural do Semiárido, Mossoró, Brazil. , (Brazil)
Type
Published Article
Journal
Anatomia Histologia Embryologia
Publisher
Wiley (Blackwell Publishing)
Publication Date
Mar 01, 2021
Volume
50
Issue
2
Pages
345–349
Identifiers
DOI: 10.1111/ahe.12635
PMID: 33236380
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Heart diseases in birds are frequent and generate significant production disorders. Morphometry is a valuable tool to provide fundamental information about heart conditions. Few studies have addressed morphological aspects of the heart of ratite birds, such as the Greater rhea. The present study aimed to analyse rhea heart morphometry, comparing young and adult subjects, in order to provide relevant information for the diagnosis of heart disease in this species. Hearts of young (n = 10) and adult (n = 10) female rheas were used in this research. Heart length and width and sternum length were measured using a caliper. Heart length and width and sternum length in adults were approximately three times greater than in young individuals. The left ventricular wall (LVW) was thicker than the right ventricular wall (RVW) at all ages, and the RVW was thicker in adults when compared to young subjects. The basal and middle RVW regions thicken with advancing age, and the thickness of the interventricular septum (ISW) occupies an intermediate position between the LVW and RVW. In general, an increase in rhea heart thickness and size relative to age is observed. The morphometric variations between young and adult rhea hearts observed in the present study may serve as a comparative subsidy for the diagnosis of cardiac abnormalities observed in this species. © 2020 Wiley-VCH GmbH.

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