Microscopic and ultrastructural anatomy of the trachea and bronchi of Melopsittacus undulatus (Aves, Psittaciformes)

Smith, Jerome H.; Meier, Judy L.; Lampke, Cheryl; Neill, P. J. G.; Box, Edith D.

doi:10.1007/bf00312123

Cited by 3 publications

(4 citation statements)

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“…Consecutively, the remodelling of the apparent tracheal epithelium between FE27 and FE31 by the formation of intraepithelial glands at FE31 showed that at this stage, cellular organization presentes similarities to that which is observed in adult birds (Smith et al 1987, Cevik-Demirkan et al 2007. Though this age does not represent full foetal development in rheas, many morphological characteristics are sufficiently ready to take on a respiratory function.…”

Section: Discussionmentioning

confidence: 85%

“…Subsequent to the syringeal region, the main extrapulmonary bronchi, also called mesobronchi, are coated by typical respiratory epithelium as was observed in ducks Anas platyrhynchos (Frank et al 2006), parakeets (Smith et al 1987) and Domestic hens (Lopez et al 2000). As described by Alcântara et al (2013), the structural components of the bronchial tubes are supported by cartilage plates as was observed in this study.…”

Section: Discussionmentioning

confidence: 90%

“…As for the complete formation of the cartilaginous rings of the trachea, this study reported that in the late period in rhea foetuses, compared with that described for chickens at six days, the trachea was characterized as a long, flexible cartilaginous tube (Alcântara et al 2013). In the adult parakeet Melopsittacus undulates, most tracheal cartilages had become calcified (Smith et al 1987) by this time. During the last stages of development described here in rheas, the morphological structure of the syrinx showed similarities in relation to that observed in young and adult birds (Cevik-Demirkan et al 2007, Khaksar et al 2012, Yildiz et al 2003.…”

Section: Discussionmentioning

confidence: 99%

“…Some studies have been performed to describe the morphological characteristics of the respiratory organs, mainly using domestic chicken Gallus gallus domesticus as an experimental model (Alcântara et al 2013, Kang et al 2013, Lopez et al 2000, Maina 2003a). In addition to this, other species of birds, like the ostrich Struthio camelus (Abidu-Figueiredo et al 2012, Makanyaa et al 2012, Yildiz et al 2003, the parakeet Melopsittacus undulatus (Smith et al 1987), the quail Coturnix coturnix japonicum (Cevik-Demirkan et al 2007), the Meleagris gallopavo turkey (Khaksar et al 2012) and the pelican Pelicanus conspicillatus (Runciman et al 2005) have served as models for studies in this area.…”

Section: Introductionmentioning

confidence: 99%

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Morphogenesis of the rhea (Rhea americana) respiratory system in different embryonic and foetal stages

et al. 2018

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RESUMO.-[Morfogênese do sistema respiratório da ema (Rhea americana) em diferentes estágios embrionários e fetais.] A ema (Rhea americana) representa importante espécie silvestre que vem se destacando na pecuaria nacional e internacional. Esta pesquisa objetiva analisar o desenvolvimento embrionário-fetal, em diferentes fases, do sistema respiratório de emas. Vinte e três embriões e fetos foram eutanasiados, fixados e dissecados. Fragmentos do sistema respiratório: cavidade nasal, laringe, traqueia, siringe, brônquios e pulmões, foram coletados e processados para estudos por meio de microscopia de luz e microscopia eletrônica de varredura. A cavidade nasal apresentou, nas primeiras fases de desenvolvimento, epitélio estratificado cúbico. A laringe exibiu epitélio respiratório típico entre 27 e 31 dias. A traqueia aos 15 dias apresentou início de formação da cartilagem hialina. Na siringe a túnica mucosa de fetos de 18 dias e formada por epitélio estratificado ciliado na região bronquial. Os brônquios principais apresentavam epitélio estratificado ciliado com células caliciformes na região siringeal. No pulmão, o estágio parabronquial of the rhea (Rhea americana) respiratory system in different embryonic and foetal stages. Pesquisa Veterinária Brasileira 38 (1):154-166. The rhea (Rhea americana) is an important wild species that has been highlighted in national and international livestock. This research aims to analyse embryo-foetal development in different phases of the respiratory system of rheas. Twenty-three embryos and foetuses were euthanized, fixed and dissected. Fragments of the respiratory system, including the nasal cavity, larynx, trachea, syrinx, bronchi and lungs, were collected and processed for studies using light and scanning electron microscopy. The nasal cavity presented cubic epithelium in the early stages of development. The larynx exhibited typical respiratory epithelium between 27 and 31 days. The trachea showed early formation of hyaline cartilage after 15 days. Syrinx in the mucous membrane of 18-day foetuses consisted of ciliated epithelium in the bronchial region. The main bronchi had ciliated epithelium with goblet cells in the syringeal region. In the lung, the parabronchial stage presented numerous parabronchi between 15 and 21 days. This study allowed the identification of normal events that occur during the development of the rhea respiratory system, an important model that has not previously been described. The information generated here will be useful for the diagnosis of pathologies that affect this organic system, aimed at improving captive production systems.

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphogenesis of the rhea (Rhea americana) respiratory system in different embryonic and foetal stages

et al. 2018

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Pathology of Experimental Sarcocystis falcatula Infections of Canaries (Serinus canarius) and Pigeons (Columba livia)

Smith¹,

Neill²,

Dillard³

et al. 1990

The Journal of Parasitology

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Sarcocystis falcatula is an apicomplexan parasite with a broad range of avian intermediate hosts. The pathology and pathogenesis of infection with this parasite has been studied experimentally in the budgerigar (Melopsittacus undulatus). The present study quantitatively examines the pathology of this parasite in canaries (Serinus canarius) and pigeons (Columba livia) and compares it with that found in budgerigars. The general progression of merogony and cyst formation is similar qualitatively to that seen in budgerigars, but it differs quantitatively. The principal site of precystic merogony is in pulmonary endothelial cells. The magnitude of pulmonary meront burdens (at similar inoculated dosages) varies in different intermediate host species. Merogony is less persistent than in budgerigars. Among the various species of birds, the magnitude of precystic merogony correlates differently with the magnitude of skeletal muscle cyst burdens. The distribution of cyst burdens among various muscles also differs. The composition of inflammatory cells differs among various avian species' response to S. falcatula. Pathologic changes quantitatively parallel tissue meront burdens (except possibly in the liver of canaries), resulting in an interstitial pneumonitis, hepatitis, and mild inflammatory lesions of other organs.

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Morphology of the Tracheal Epithelium in the Quail (Coturnix coturnix japonica)

Pourlis¹,

Siasios²,

Grivas³

2018

Asian J. of Animal and Veterinary Advances

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Microscopic and ultrastructural anatomy of the trachea and bronchi of Melopsittacus undulatus (Aves, Psittaciformes)

Cited by 3 publications

References 13 publications

Morphogenesis of the rhea (Rhea americana) respiratory system in different embryonic and foetal stages

Morphogenesis of the rhea (Rhea americana) respiratory system in different embryonic and foetal stages

Pathology of Experimental Sarcocystis falcatula Infections of Canaries (Serinus canarius) and Pigeons (Columba livia)

Morphology of the Tracheal Epithelium in the Quail (Coturnix coturnix japonica)

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