<b>Ultrastructural aspects of the tongue in Magellanic Penguins <i>Spheniscus magellanicus</i> (Forster, 1781)

  • Juliana Plácido Guimarães Universidade de São Paulo
  • Renata de Britto Mari Universidade Estadual Paulista
  • Alfredo Le Bas Universidad de la República
  • Maria Angélica Miglino Universidade de São Paulo

Resumo

The tongue of birds presents diversified morphologic characteristics, related directly their feeding habits and may be adapted to food capture. Penguins of the Spheniscidae family are pelagic birds that are totally adapted to the marine environment.  The objective of this study was to describe the morphology of the tongue in Magellanic penguins (Spheniscus magellanicus). In order to investigate these characteristics, six tongues of juvenile S. magellanicus were collected and their morphology analyzed macroscopically and microscopically.  The tongue of the Magellanic penguin has a fusiform shape with a round apex that is narrower than the root, following the shape of the beak.  The epithelium of the tongue of the Magellanic penguin showed to be stratified and very keratinized, with the presence of lingual papillae that showed a caudally inclined apex. The neighboring connective tissue showed absence of mucous glands. The cartilaginous skeleton was observed in the medial region of the tongue, extending from the base to the apex. The structure of the tongue of the Magellanic penguin showed to be similar to that of other penguin species, but also showed peculiar characteristics that were not observed in other bird families.

 

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Publicado
2014-10-03
Como Citar
Guimarães, J. P., Mari, R. de B., Le Bas, A., & Miglino, M. A. (2014). <b>Ultrastructural aspects of the tongue in Magellanic Penguins <i>Spheniscus magellanicus</i&gt; (Forster, 1781). Acta Scientiarum. Biological Sciences, 36(4), 491-497. https://doi.org/10.4025/actascibiolsci.v36i4.23168
Seção
Morfofisiologia Animal

 

0.6
2019CiteScore
 
 
31st percentile
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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus