Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy.
peer reviewed The morphological study of the Odontocete organ of Corti, together with possible alterations associated with damage from sound exposure, represents a key conservation approach to assess the effects of acoustic pollution on marine ecosystems. By collaborating with stranding networks fro...
Published in: | Journal of Comparative Neurology |
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John Wiley & Sons
2014
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Online Access: | https://orbi.uliege.be/handle/2268/174673 https://orbi.uliege.be/bitstream/2268/174673/1/Morell%2c2014.pdf https://doi.org/10.1002/cne.23688 |
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ftorbi:oai:orbi.ulg.ac.be:2268/174673 2024-10-13T14:10:18+00:00 Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. Morell, Maria Lenoir, Marc Shadwick, Robert E. Jauniaux, Thierry Dabin, Willy Begeman, Lineke Ferreira, Marisa Maestre, Iranzu Degollada, Eduard Hernandez-Milian, Gema Cazevieille, Chantal Fortuno, Jose-Manuel Vogl, Wayne Puel, Jean-Luc Andre, Michel 2014 https://orbi.uliege.be/handle/2268/174673 https://orbi.uliege.be/bitstream/2268/174673/1/Morell%2c2014.pdf https://doi.org/10.1002/cne.23688 en eng John Wiley & Sons urn:issn:0021-9967 urn:issn:1096-9861 https://orbi.uliege.be/handle/2268/174673 info:hdl:2268/174673 https://orbi.uliege.be/bitstream/2268/174673/1/Morell%2c2014.pdf doi:10.1002/cne.23688 info:pmid:25269663 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Journal of Comparative Neurology (2014) acoustic trauma cetacean cochlea inner ear morphology Life sciences Veterinary medicine & animal health Sciences du vivant Médecine vétérinaire & santé animale journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2014 ftorbi https://doi.org/10.1002/cne.23688 2024-09-27T07:01:56Z peer reviewed The morphological study of the Odontocete organ of Corti, together with possible alterations associated with damage from sound exposure, represents a key conservation approach to assess the effects of acoustic pollution on marine ecosystems. By collaborating with stranding networks from several European countries, 150 ears from 13 species of Odontocetes were collected and analyzed by scanning (SEM) and transmission (TEM) electron microscopy. Based on our analyses, we first describe and compare Odontocete cochlear structures and then propose a diagnostic method to identify inner ear alterations in stranded individuals. The two species analyzed by TEM (Phocoena phocoena and Stenella coeruleoalba) showed morphological characteristics in the lower basal turn of high-frequency hearing species. Among other striking features, outer hair cell bodies were extremely small and were strongly attached to Deiters cells. Such morphological characteristics, shared with horseshoe bats, suggest that there has been convergent evolution of sound reception mechanisms among echolocating species. Despite possible autolytic artifacts due to technical and experimental constraints, the SEM analysis allowed us to detect the presence of scarring processes resulting from the disappearance of outer hair cells from the epithelium. In addition, in contrast to the rapid decomposition process of the sensory epithelium after death (especially of the inner hair cells), the tectorial membrane appeared to be more resistant to postmortem autolysis effects. Analysis of the stereocilia imprint pattern at the undersurface of the tectorial membrane may provide a way to detect possible ultrastructural alterations of the hair cell stereocilia by mirroring them on the tectorial membrane. J. Comp. Neurol., 2014. (c) 2014 Wiley Periodicals, Inc. Article in Journal/Newspaper Phocoena phocoena University of Liège: ORBi (Open Repository and Bibliography) Journal of Comparative Neurology 523 3 431 448 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
acoustic trauma cetacean cochlea inner ear morphology Life sciences Veterinary medicine & animal health Sciences du vivant Médecine vétérinaire & santé animale |
spellingShingle |
acoustic trauma cetacean cochlea inner ear morphology Life sciences Veterinary medicine & animal health Sciences du vivant Médecine vétérinaire & santé animale Morell, Maria Lenoir, Marc Shadwick, Robert E. Jauniaux, Thierry Dabin, Willy Begeman, Lineke Ferreira, Marisa Maestre, Iranzu Degollada, Eduard Hernandez-Milian, Gema Cazevieille, Chantal Fortuno, Jose-Manuel Vogl, Wayne Puel, Jean-Luc Andre, Michel Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. |
topic_facet |
acoustic trauma cetacean cochlea inner ear morphology Life sciences Veterinary medicine & animal health Sciences du vivant Médecine vétérinaire & santé animale |
description |
peer reviewed The morphological study of the Odontocete organ of Corti, together with possible alterations associated with damage from sound exposure, represents a key conservation approach to assess the effects of acoustic pollution on marine ecosystems. By collaborating with stranding networks from several European countries, 150 ears from 13 species of Odontocetes were collected and analyzed by scanning (SEM) and transmission (TEM) electron microscopy. Based on our analyses, we first describe and compare Odontocete cochlear structures and then propose a diagnostic method to identify inner ear alterations in stranded individuals. The two species analyzed by TEM (Phocoena phocoena and Stenella coeruleoalba) showed morphological characteristics in the lower basal turn of high-frequency hearing species. Among other striking features, outer hair cell bodies were extremely small and were strongly attached to Deiters cells. Such morphological characteristics, shared with horseshoe bats, suggest that there has been convergent evolution of sound reception mechanisms among echolocating species. Despite possible autolytic artifacts due to technical and experimental constraints, the SEM analysis allowed us to detect the presence of scarring processes resulting from the disappearance of outer hair cells from the epithelium. In addition, in contrast to the rapid decomposition process of the sensory epithelium after death (especially of the inner hair cells), the tectorial membrane appeared to be more resistant to postmortem autolysis effects. Analysis of the stereocilia imprint pattern at the undersurface of the tectorial membrane may provide a way to detect possible ultrastructural alterations of the hair cell stereocilia by mirroring them on the tectorial membrane. J. Comp. Neurol., 2014. (c) 2014 Wiley Periodicals, Inc. |
format |
Article in Journal/Newspaper |
author |
Morell, Maria Lenoir, Marc Shadwick, Robert E. Jauniaux, Thierry Dabin, Willy Begeman, Lineke Ferreira, Marisa Maestre, Iranzu Degollada, Eduard Hernandez-Milian, Gema Cazevieille, Chantal Fortuno, Jose-Manuel Vogl, Wayne Puel, Jean-Luc Andre, Michel |
author_facet |
Morell, Maria Lenoir, Marc Shadwick, Robert E. Jauniaux, Thierry Dabin, Willy Begeman, Lineke Ferreira, Marisa Maestre, Iranzu Degollada, Eduard Hernandez-Milian, Gema Cazevieille, Chantal Fortuno, Jose-Manuel Vogl, Wayne Puel, Jean-Luc Andre, Michel |
author_sort |
Morell, Maria |
title |
Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. |
title_short |
Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. |
title_full |
Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. |
title_fullStr |
Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. |
title_full_unstemmed |
Ultrastructure of the Odontocete Organ of Corti: Scanning and transmission electron microscopy. |
title_sort |
ultrastructure of the odontocete organ of corti: scanning and transmission electron microscopy. |
publisher |
John Wiley & Sons |
publishDate |
2014 |
url |
https://orbi.uliege.be/handle/2268/174673 https://orbi.uliege.be/bitstream/2268/174673/1/Morell%2c2014.pdf https://doi.org/10.1002/cne.23688 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_source |
Journal of Comparative Neurology (2014) |
op_relation |
urn:issn:0021-9967 urn:issn:1096-9861 https://orbi.uliege.be/handle/2268/174673 info:hdl:2268/174673 https://orbi.uliege.be/bitstream/2268/174673/1/Morell%2c2014.pdf doi:10.1002/cne.23688 info:pmid:25269663 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/cne.23688 |
container_title |
Journal of Comparative Neurology |
container_volume |
523 |
container_issue |
3 |
container_start_page |
431 |
op_container_end_page |
448 |
_version_ |
1812817510469206016 |