Comparative distribution and arrangement of Herbst corpuscles in the oropharynx of the ostrich (Struthio camelus) and emu (Dromaius novaehollandiae)

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dc.contributor.upauthor Crole, Martina Rachel
dc.contributor.upauthor Soley, John Thomson
dc.date.accessioned 2014-10-08T06:31:29Z
dc.date.issued 2014-07
dc.description.abstract Herbst corpuscles are widely distributed throughout the oropharynx of the ostrich and emu in contrast to the general situation in birds. Knowledge of the comparative distribution of Herbst corpuscles in the oropharynx of these two commercially important ratite species may assist in a better understanding of their feeding habits. Tissue sections representing all parts of the oropharynx of five ostrich and five emu heads collected after slaughter were prepared for light microscopy, the Herbst corpuscles counted, and the relative percentage of corpuscles calculated for defined anatomical regions. Herbst corpuscles were more widespread in the oropharynx of the emu (where they were additionally found in the tongue and laryngeal mound) than in the ostrich but were absent from the pharyngeal folds in both species. The results further indicated that Herbst corpuscles were strategically located to aid in the handling and transport of food. In this context, the high concentration of Herbst corpuscles in the prominent median palatine and ventral ridges in the ostrich denote these structures as sensory organs, namely the palatal and interramal organs. The presence of these sensory organs, coupled with the higher relative percentage of Herbst corpuscles located on the rostral oropharyngeal floor, indicate that the part of the oropharynx caudal to the mandibular and maxillary rostra forms an important sensory region in the ostrich. Additionally, speciesspecific concentrations of Herbst corpuscles within the oropharynx were identified which appear to assist in the accurate positioning of the tongue and laryngeal mound for cleaning the choana (internal nares) after swallowing. en_US
dc.description.librarian hb2014 en_US
dc.description.uri http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1932-8494 en_US
dc.identifier.citation Crole, MR & Soley, JT 2014, 'Comparative distribution and arrangement of Herbst corpuscles in the oropharynx of the ostrich (Struthio camelus) and emu (Dromaius novaehollandiae)', The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology, vol. 297, no. 7, pp. 1338-1348. en_US
dc.identifier.issn 1932-8486 (print)
dc.identifier.issn 1932-8494 (online)
dc.identifier.other 10.1002/ar.22933
dc.identifier.other 36143778600
dc.identifier.other G-9839-2014
dc.identifier.other 6701816856
dc.identifier.uri http://hdl.handle.net/2263/42293
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.rights © 2014 Wiley Periodicals,Inc. This is the pre-peer reviewed version of the following article : Comparative distribution and arrangement of Herbst corpuscles in the oropharynx of the ostrich (Struthio camelus) and emu (Dromaius novaehollandiae),The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology, vol. 297, no. 7, pp. 1338-1348, 2014. doi : 10.1002/ar.22933. The definite version is available at : http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-8322. en_US
dc.subject Oropharynx en_US
dc.subject Herbst corpuscle distribution en_US
dc.subject Sensory organ en_US
dc.subject Ostriches en_US
dc.subject Emus en_US
dc.subject Dromaius novaehollandiae
dc.subject Struthio camelus
dc.title Comparative distribution and arrangement of Herbst corpuscles in the oropharynx of the ostrich (Struthio camelus) and emu (Dromaius novaehollandiae) en_US
dc.type Postprint Article en_US


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