The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny
Abstract The pygmy right whale, Caperea marginata , is the least understood extant baleen whale (Cetacea, Mysticeti). Knowledge on its basic anatomy, ecology, and fossil record is limited, even though its singular position outside both balaenids (right whales) and balaenopteroids (rorquals + grey wh...
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crwiley:10.1002/jmor.20674 2024-06-02T08:04:01+00:00 The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny Park, Travis Marx, Felix G. Fitzgerald, Erich M. G. Evans, Alistair R. 2017 http://dx.doi.org/10.1002/jmor.20674 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjmor.20674 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jmor.20674 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Morphology volume 278, issue 6, page 801-809 ISSN 0362-2525 1097-4687 journal-article 2017 crwiley https://doi.org/10.1002/jmor.20674 2024-05-03T10:40:05Z Abstract The pygmy right whale, Caperea marginata , is the least understood extant baleen whale (Cetacea, Mysticeti). Knowledge on its basic anatomy, ecology, and fossil record is limited, even though its singular position outside both balaenids (right whales) and balaenopteroids (rorquals + grey whales) gives Caperea a pivotal role in mysticete evolution. Recent investigations of the cetacean cochlea have provided new insights into sensory capabilities and phylogeny. Here, we extend this advance to Caperea by describing, for the first time, the inner ear of this enigmatic species. The cochlea is large and appears to be sensitive to low‐frequency sounds, but its hearing limit is relatively high. The presence of a well‐developed tympanal recess links Caperea with cetotheriids and balaenopteroids, rather than balaenids, contrary to the traditional morphological view of a close Caperea ‐balaenid relationship. Nevertheless, a broader sample of the cetotheriid Herpetocetus demonstrates that the presence of a tympanal recess can be variable at the specific and possibly even the intraspecific level. Article in Journal/Newspaper baleen whale Wiley Online Library Recess ENVELOPE(-61.516,-61.516,-64.500,-64.500) Journal of Morphology 278 6 801 809 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The pygmy right whale, Caperea marginata , is the least understood extant baleen whale (Cetacea, Mysticeti). Knowledge on its basic anatomy, ecology, and fossil record is limited, even though its singular position outside both balaenids (right whales) and balaenopteroids (rorquals + grey whales) gives Caperea a pivotal role in mysticete evolution. Recent investigations of the cetacean cochlea have provided new insights into sensory capabilities and phylogeny. Here, we extend this advance to Caperea by describing, for the first time, the inner ear of this enigmatic species. The cochlea is large and appears to be sensitive to low‐frequency sounds, but its hearing limit is relatively high. The presence of a well‐developed tympanal recess links Caperea with cetotheriids and balaenopteroids, rather than balaenids, contrary to the traditional morphological view of a close Caperea ‐balaenid relationship. Nevertheless, a broader sample of the cetotheriid Herpetocetus demonstrates that the presence of a tympanal recess can be variable at the specific and possibly even the intraspecific level. |
format |
Article in Journal/Newspaper |
author |
Park, Travis Marx, Felix G. Fitzgerald, Erich M. G. Evans, Alistair R. |
spellingShingle |
Park, Travis Marx, Felix G. Fitzgerald, Erich M. G. Evans, Alistair R. The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny |
author_facet |
Park, Travis Marx, Felix G. Fitzgerald, Erich M. G. Evans, Alistair R. |
author_sort |
Park, Travis |
title |
The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny |
title_short |
The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny |
title_full |
The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny |
title_fullStr |
The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny |
title_full_unstemmed |
The cochlea of the enigmatic pygmy right whale Caperea marginata informs mysticete phylogeny |
title_sort |
cochlea of the enigmatic pygmy right whale caperea marginata informs mysticete phylogeny |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/jmor.20674 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjmor.20674 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jmor.20674 |
long_lat |
ENVELOPE(-61.516,-61.516,-64.500,-64.500) |
geographic |
Recess |
geographic_facet |
Recess |
genre |
baleen whale |
genre_facet |
baleen whale |
op_source |
Journal of Morphology volume 278, issue 6, page 801-809 ISSN 0362-2525 1097-4687 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jmor.20674 |
container_title |
Journal of Morphology |
container_volume |
278 |
container_issue |
6 |
container_start_page |
801 |
op_container_end_page |
809 |
_version_ |
1800748634945355776 |