Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti)
Balaenopteridae actively feed by engulfment. They swim rapidly at their prey (40–50 km/h), with their mouth open and their lower jaw pulled wide open at a 90° angle. Their mouth and ventral pouch engulf up to 60 m3 of water, then the mouth closes and food is swallowed after the expulsion of water th...
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fthighwire:oai:open-archive.highwire.org:jmammal:86/1/139 2023-05-15T15:37:10+02:00 Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) Bouetel, Virginie 2005-02-15 00:00:00.0 text/html http://jmammal.oxfordjournals.org/cgi/content/short/86/1/139 https://doi.org/10.1644/1545-1542(2005)086<0139:PIOSSA>2.0.CO;2 en eng Oxford University Press http://jmammal.oxfordjournals.org/cgi/content/short/86/1/139 http://dx.doi.org/10.1644/1545-1542(2005)086<0139:PIOSSA>2.0.CO;2 Copyright (C) 2005, Oxford University Press Feature Articles TEXT 2005 fthighwire https://doi.org/10.1644/1545-1542(2005)086<0139:PIOSSA>2.0.CO;2 2018-04-07T06:26:05Z Balaenopteridae actively feed by engulfment. They swim rapidly at their prey (40–50 km/h), with their mouth open and their lower jaw pulled wide open at a 90° angle. Their mouth and ventral pouch engulf up to 60 m3 of water, then the mouth closes and food is swallowed after the expulsion of water through the baleen. These highly specialized feeding mechanisms are associated with a developed ascending process of the maxilla and a hooklike and outwardly bent coronoid process of the dentary. These features participate in the strengthening of the architecture of the skull and jaw. Although all fossil baleen mysticetes bear a developed coronoid process, only 6 taxa ( Piscobalaena nana, Cetotherium rathkei, Herpetocetus sendaicus, Metopocetus durinasus, Mixocetus elysius , and Nannocetus eremus ) have a posteromedially expanded ascending process of the maxilla. Feeding strategies and mechanisms of each extant family of baleen whales are compared and correlated with the associated skull and dentary features. This correlation suggests a preliminary phylogeny of the mysticetes and a new definition of the Cetotheriidae sensu stricto ( Piscobalaena nana , Cetotherium rathkei , Herpetocetus sendaicus , Metopocetus durinasus , Mixocetus elysius , and Nannocetus eremus ). Text baleen whales HighWire Press (Stanford University) |
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Feature Articles |
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Feature Articles Bouetel, Virginie Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) |
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Feature Articles |
description |
Balaenopteridae actively feed by engulfment. They swim rapidly at their prey (40–50 km/h), with their mouth open and their lower jaw pulled wide open at a 90° angle. Their mouth and ventral pouch engulf up to 60 m3 of water, then the mouth closes and food is swallowed after the expulsion of water through the baleen. These highly specialized feeding mechanisms are associated with a developed ascending process of the maxilla and a hooklike and outwardly bent coronoid process of the dentary. These features participate in the strengthening of the architecture of the skull and jaw. Although all fossil baleen mysticetes bear a developed coronoid process, only 6 taxa ( Piscobalaena nana, Cetotherium rathkei, Herpetocetus sendaicus, Metopocetus durinasus, Mixocetus elysius , and Nannocetus eremus ) have a posteromedially expanded ascending process of the maxilla. Feeding strategies and mechanisms of each extant family of baleen whales are compared and correlated with the associated skull and dentary features. This correlation suggests a preliminary phylogeny of the mysticetes and a new definition of the Cetotheriidae sensu stricto ( Piscobalaena nana , Cetotherium rathkei , Herpetocetus sendaicus , Metopocetus durinasus , Mixocetus elysius , and Nannocetus eremus ). |
format |
Text |
author |
Bouetel, Virginie |
author_facet |
Bouetel, Virginie |
author_sort |
Bouetel, Virginie |
title |
Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) |
title_short |
Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) |
title_full |
Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) |
title_fullStr |
Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) |
title_full_unstemmed |
Phylogenetic Implications of Skull Structure and Feeding Behavior in Balaenopterids (Cetacea, Mysticeti) |
title_sort |
phylogenetic implications of skull structure and feeding behavior in balaenopterids (cetacea, mysticeti) |
publisher |
Oxford University Press |
publishDate |
2005 |
url |
http://jmammal.oxfordjournals.org/cgi/content/short/86/1/139 https://doi.org/10.1644/1545-1542(2005)086<0139:PIOSSA>2.0.CO;2 |
genre |
baleen whales |
genre_facet |
baleen whales |
op_relation |
http://jmammal.oxfordjournals.org/cgi/content/short/86/1/139 http://dx.doi.org/10.1644/1545-1542(2005)086<0139:PIOSSA>2.0.CO;2 |
op_rights |
Copyright (C) 2005, Oxford University Press |
op_doi |
https://doi.org/10.1644/1545-1542(2005)086<0139:PIOSSA>2.0.CO;2 |
_version_ |
1766367620483776512 |