Cranial asymmetry in Eocene archaeocete whales and the evolution of directional hearing in water
Eocene archaeocete whales gave rise to all modern toothed and baleen whales (Odontoceti and Mysticeti) during or near the Eocene-Oligocene transition. Odontocetes have asymmetrical skulls, with asymmetry linked to high-frequency sound production and echolocation. Mysticetes are generally assumed to...
Gespeichert in:
| Veröffentlicht in: | Proceedings of the National Academy of Sciences - PNAS 2011-08, Vol.108 (35), p.14545-14548 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 14548 |
|---|---|
| container_issue | 35 |
| container_start_page | 14545 |
| container_title | Proceedings of the National Academy of Sciences - PNAS |
| container_volume | 108 |
| creator | Fahlke, Julia M Gingerich, Philip D Welsh, Robert C Wood, Aaron R |
| description | Eocene archaeocete whales gave rise to all modern toothed and baleen whales (Odontoceti and Mysticeti) during or near the Eocene-Oligocene transition. Odontocetes have asymmetrical skulls, with asymmetry linked to high-frequency sound production and echolocation. Mysticetes are generally assumed to have symmetrical skulls and lack high-frequency hearing. Here we show that protocetid and basilosaurid archaeocete skulls are distinctly and directionally asymmetrical. Archaeocete asymmetry involves curvature and axial torsion of the cranium, but no telescoping. Cranial asymmetry evolved in Eocene archaeocetes as part of a complex of traits linked to directional hearing (such as pan-bone thinning of the lower jaws, mandibular fat pads, and isolation of the ear region), probably enabling them to hear the higher sonic frequencies of sound-producing fish on which they preyed. Ultrasonic echolocation evolved in Oligocene odontocetes, enabling them to find silent prey. Asymmetry and much of the sonic-frequency range of directional hearing were lost in Oligocene mysticetes during the shift to low-frequency hearing and bulk-straining predation. |
| doi_str_mv | 10.1073/pnas.1108927108 |
| format | Article |
| fullrecord | <record><control><sourceid>jstor_pnas_</sourceid><recordid>TN_cdi_pnas_primary_108_35_14545</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>27979328</jstor_id><sourcerecordid>27979328</sourcerecordid><originalsourceid>FETCH-LOGICAL-a644t-5d2bcb25ca94cf4c53620672840245eade87daeab16d2f8612fd22023bdb07033</originalsourceid><addsrcrecordid>eNqFkstv1DAQxi0EokvhzAmwuMAlrd-PCxJalYdUiQP0bCaJs8kqiRc7abX_PY526QIHuPih-c034_GH0HNKLijR_HI3QrqglBjLdF4foBUllhZKWPIQrQhhujCCiTP0JKUtIcRKQx6jM0aN5ozqFfq-jjB20GNI-2HwU9zjbsRXofKjxxCrFnw-Tx7ftdD7hGGs8dR67G9DP09dGHFocN1FXy2XrNN6iN24WVTuYPLxKXrUQJ_8s-N-jm4-XH1bfyquv3z8vH5_XYASYipkzcqqZLICK6pGVJIrRpRmRhAmpIfaG12Dh5KqmjVGUdbUjBHGy7okmnB-jt4ddHdzOfg69z9F6N0udgPEvQvQuT8jY9e6Tbh1nCotuckCb44CMfyYfZrc0KXK9z2MPszJWaKp1tba_5LGKEs1UyKTb_9JUsmtEMKwpf_Xf6HbMMc80UUv_y2VbKl8eYCqGFKKvrl_HyVuMYRbDOFOhsgZL38fyz3_ywEZwEdgyTzJGcelo0IKmZEXB2SbphBPEtpqy9lS49Uh3kBwsIldcjdfGaEiG05ZIg3_CQNGz0o</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>887101529</pqid></control><display><type>article</type><title>Cranial asymmetry in Eocene archaeocete whales and the evolution of directional hearing in water</title><source>MEDLINE</source><source>Jstor Complete Legacy</source><source>PubMed Central</source><source>Alma/SFX Local Collection</source><source>Free Full-Text Journals in Chemistry</source><creator>Fahlke, Julia M ; Gingerich, Philip D ; Welsh, Robert C ; Wood, Aaron R</creator><creatorcontrib>Fahlke, Julia M ; Gingerich, Philip D ; Welsh, Robert C ; Wood, Aaron R</creatorcontrib><description>Eocene archaeocete whales gave rise to all modern toothed and baleen whales (Odontoceti and Mysticeti) during or near the Eocene-Oligocene transition. Odontocetes have asymmetrical skulls, with asymmetry linked to high-frequency sound production and echolocation. Mysticetes are generally assumed to have symmetrical skulls and lack high-frequency hearing. Here we show that protocetid and basilosaurid archaeocete skulls are distinctly and directionally asymmetrical. Archaeocete asymmetry involves curvature and axial torsion of the cranium, but no telescoping. Cranial asymmetry evolved in Eocene archaeocetes as part of a complex of traits linked to directional hearing (such as pan-bone thinning of the lower jaws, mandibular fat pads, and isolation of the ear region), probably enabling them to hear the higher sonic frequencies of sound-producing fish on which they preyed. Ultrasonic echolocation evolved in Oligocene odontocetes, enabling them to find silent prey. Asymmetry and much of the sonic-frequency range of directional hearing were lost in Oligocene mysticetes during the shift to low-frequency hearing and bulk-straining predation.</description><identifier>ISSN: 0027-8424</identifier><identifier>EISSN: 1091-6490</identifier><identifier>DOI: 10.1073/pnas.1108927108</identifier><identifier>PMID: 21873217</identifier><language>eng</language><publisher>United States: National Academy of Sciences</publisher><subject>Acoustic echoes ; Animal anatomy ; Animal sound production ; Animals ; Aquatic mammals ; Archaeocetes ; Auditory perception ; Biological Evolution ; Biological Sciences ; Bones ; Cetacea ; Cranium ; ears ; Eocene ; Evolution ; fish ; Frequencies ; hearing ; Hearing - physiology ; jaws ; Marine ; Mysticetes ; Mysticeti ; Odontoceti ; Oligocene ; Predation ; Skull ; Skull - anatomy & histology ; Sound ; Ultrasonic technology ; Whales ; Whales & whaling ; Whales - anatomy & histology ; Whales - physiology</subject><ispartof>Proceedings of the National Academy of Sciences - PNAS, 2011-08, Vol.108 (35), p.14545-14548</ispartof><rights>copyright © 1993–2008 National Academy of Sciences of the United States of America</rights><rights>Copyright National Academy of Sciences Aug 30, 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a644t-5d2bcb25ca94cf4c53620672840245eade87daeab16d2f8612fd22023bdb07033</citedby><cites>FETCH-LOGICAL-a644t-5d2bcb25ca94cf4c53620672840245eade87daeab16d2f8612fd22023bdb07033</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.pnas.org/content/108/35.cover.gif</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/27979328$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/27979328$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,724,777,781,800,882,27905,27906,53772,53774,57998,58231</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21873217$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Fahlke, Julia M</creatorcontrib><creatorcontrib>Gingerich, Philip D</creatorcontrib><creatorcontrib>Welsh, Robert C</creatorcontrib><creatorcontrib>Wood, Aaron R</creatorcontrib><title>Cranial asymmetry in Eocene archaeocete whales and the evolution of directional hearing in water</title><title>Proceedings of the National Academy of Sciences - PNAS</title><addtitle>Proc Natl Acad Sci U S A</addtitle><description>Eocene archaeocete whales gave rise to all modern toothed and baleen whales (Odontoceti and Mysticeti) during or near the Eocene-Oligocene transition. Odontocetes have asymmetrical skulls, with asymmetry linked to high-frequency sound production and echolocation. Mysticetes are generally assumed to have symmetrical skulls and lack high-frequency hearing. Here we show that protocetid and basilosaurid archaeocete skulls are distinctly and directionally asymmetrical. Archaeocete asymmetry involves curvature and axial torsion of the cranium, but no telescoping. Cranial asymmetry evolved in Eocene archaeocetes as part of a complex of traits linked to directional hearing (such as pan-bone thinning of the lower jaws, mandibular fat pads, and isolation of the ear region), probably enabling them to hear the higher sonic frequencies of sound-producing fish on which they preyed. Ultrasonic echolocation evolved in Oligocene odontocetes, enabling them to find silent prey. Asymmetry and much of the sonic-frequency range of directional hearing were lost in Oligocene mysticetes during the shift to low-frequency hearing and bulk-straining predation.</description><subject>Acoustic echoes</subject><subject>Animal anatomy</subject><subject>Animal sound production</subject><subject>Animals</subject><subject>Aquatic mammals</subject><subject>Archaeocetes</subject><subject>Auditory perception</subject><subject>Biological Evolution</subject><subject>Biological Sciences</subject><subject>Bones</subject><subject>Cetacea</subject><subject>Cranium</subject><subject>ears</subject><subject>Eocene</subject><subject>Evolution</subject><subject>fish</subject><subject>Frequencies</subject><subject>hearing</subject><subject>Hearing - physiology</subject><subject>jaws</subject><subject>Marine</subject><subject>Mysticetes</subject><subject>Mysticeti</subject><subject>Odontoceti</subject><subject>Oligocene</subject><subject>Predation</subject><subject>Skull</subject><subject>Skull - anatomy & histology</subject><subject>Sound</subject><subject>Ultrasonic technology</subject><subject>Whales</subject><subject>Whales & whaling</subject><subject>Whales - anatomy & histology</subject><subject>Whales - physiology</subject><issn>0027-8424</issn><issn>1091-6490</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkstv1DAQxi0EokvhzAmwuMAlrd-PCxJalYdUiQP0bCaJs8kqiRc7abX_PY526QIHuPih-c034_GH0HNKLijR_HI3QrqglBjLdF4foBUllhZKWPIQrQhhujCCiTP0JKUtIcRKQx6jM0aN5ozqFfq-jjB20GNI-2HwU9zjbsRXofKjxxCrFnw-Tx7ftdD7hGGs8dR67G9DP09dGHFocN1FXy2XrNN6iN24WVTuYPLxKXrUQJ_8s-N-jm4-XH1bfyquv3z8vH5_XYASYipkzcqqZLICK6pGVJIrRpRmRhAmpIfaG12Dh5KqmjVGUdbUjBHGy7okmnB-jt4ddHdzOfg69z9F6N0udgPEvQvQuT8jY9e6Tbh1nCotuckCb44CMfyYfZrc0KXK9z2MPszJWaKp1tba_5LGKEs1UyKTb_9JUsmtEMKwpf_Xf6HbMMc80UUv_y2VbKl8eYCqGFKKvrl_HyVuMYRbDOFOhsgZL38fyz3_ywEZwEdgyTzJGcelo0IKmZEXB2SbphBPEtpqy9lS49Uh3kBwsIldcjdfGaEiG05ZIg3_CQNGz0o</recordid><startdate>20110830</startdate><enddate>20110830</enddate><creator>Fahlke, Julia M</creator><creator>Gingerich, Philip D</creator><creator>Welsh, Robert C</creator><creator>Wood, Aaron R</creator><general>National Academy of Sciences</general><general>National Acad Sciences</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7QL</scope><scope>7QP</scope><scope>7QR</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7TO</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7S9</scope><scope>L.6</scope><scope>7X8</scope><scope>7TN</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope><scope>5PM</scope></search><sort><creationdate>20110830</creationdate><title>Cranial asymmetry in Eocene archaeocete whales and the evolution of directional hearing in water</title><author>Fahlke, Julia M ; Gingerich, Philip D ; Welsh, Robert C ; Wood, Aaron R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a644t-5d2bcb25ca94cf4c53620672840245eade87daeab16d2f8612fd22023bdb07033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acoustic echoes</topic><topic>Animal anatomy</topic><topic>Animal sound production</topic><topic>Animals</topic><topic>Aquatic mammals</topic><topic>Archaeocetes</topic><topic>Auditory perception</topic><topic>Biological Evolution</topic><topic>Biological Sciences</topic><topic>Bones</topic><topic>Cetacea</topic><topic>Cranium</topic><topic>ears</topic><topic>Eocene</topic><topic>Evolution</topic><topic>fish</topic><topic>Frequencies</topic><topic>hearing</topic><topic>Hearing - physiology</topic><topic>jaws</topic><topic>Marine</topic><topic>Mysticetes</topic><topic>Mysticeti</topic><topic>Odontoceti</topic><topic>Oligocene</topic><topic>Predation</topic><topic>Skull</topic><topic>Skull - anatomy & histology</topic><topic>Sound</topic><topic>Ultrasonic technology</topic><topic>Whales</topic><topic>Whales & whaling</topic><topic>Whales - anatomy & histology</topic><topic>Whales - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fahlke, Julia M</creatorcontrib><creatorcontrib>Gingerich, Philip D</creatorcontrib><creatorcontrib>Welsh, Robert C</creatorcontrib><creatorcontrib>Wood, Aaron R</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Immunology Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Oncogenes and Growth Factors Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><collection>MEDLINE - Academic</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Proceedings of the National Academy of Sciences - PNAS</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fahlke, Julia M</au><au>Gingerich, Philip D</au><au>Welsh, Robert C</au><au>Wood, Aaron R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cranial asymmetry in Eocene archaeocete whales and the evolution of directional hearing in water</atitle><jtitle>Proceedings of the National Academy of Sciences - PNAS</jtitle><addtitle>Proc Natl Acad Sci U S A</addtitle><date>2011-08-30</date><risdate>2011</risdate><volume>108</volume><issue>35</issue><spage>14545</spage><epage>14548</epage><pages>14545-14548</pages><issn>0027-8424</issn><eissn>1091-6490</eissn><abstract>Eocene archaeocete whales gave rise to all modern toothed and baleen whales (Odontoceti and Mysticeti) during or near the Eocene-Oligocene transition. Odontocetes have asymmetrical skulls, with asymmetry linked to high-frequency sound production and echolocation. Mysticetes are generally assumed to have symmetrical skulls and lack high-frequency hearing. Here we show that protocetid and basilosaurid archaeocete skulls are distinctly and directionally asymmetrical. Archaeocete asymmetry involves curvature and axial torsion of the cranium, but no telescoping. Cranial asymmetry evolved in Eocene archaeocetes as part of a complex of traits linked to directional hearing (such as pan-bone thinning of the lower jaws, mandibular fat pads, and isolation of the ear region), probably enabling them to hear the higher sonic frequencies of sound-producing fish on which they preyed. Ultrasonic echolocation evolved in Oligocene odontocetes, enabling them to find silent prey. Asymmetry and much of the sonic-frequency range of directional hearing were lost in Oligocene mysticetes during the shift to low-frequency hearing and bulk-straining predation.</abstract><cop>United States</cop><pub>National Academy of Sciences</pub><pmid>21873217</pmid><doi>10.1073/pnas.1108927108</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0027-8424 |
| ispartof | Proceedings of the National Academy of Sciences - PNAS, 2011-08, Vol.108 (35), p.14545-14548 |
| issn | 0027-8424 1091-6490 |
| language | eng |
| recordid | cdi_pnas_primary_108_35_14545 |
| source | MEDLINE; Jstor Complete Legacy; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry |
| subjects | Acoustic echoes Animal anatomy Animal sound production Animals Aquatic mammals Archaeocetes Auditory perception Biological Evolution Biological Sciences Bones Cetacea Cranium ears Eocene Evolution fish Frequencies hearing Hearing - physiology jaws Marine Mysticetes Mysticeti Odontoceti Oligocene Predation Skull Skull - anatomy & histology Sound Ultrasonic technology Whales Whales & whaling Whales - anatomy & histology Whales - physiology |
| title | Cranial asymmetry in Eocene archaeocete whales and the evolution of directional hearing in water |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-21T02%3A53%3A07IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_pnas_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Cranial%20asymmetry%20in%20Eocene%20archaeocete%20whales%20and%20the%20evolution%20of%20directional%20hearing%20in%20water&rft.jtitle=Proceedings%20of%20the%20National%20Academy%20of%20Sciences%20-%20PNAS&rft.au=Fahlke,%20Julia%20M&rft.date=2011-08-30&rft.volume=108&rft.issue=35&rft.spage=14545&rft.epage=14548&rft.pages=14545-14548&rft.issn=0027-8424&rft.eissn=1091-6490&rft_id=info:doi/10.1073/pnas.1108927108&rft_dat=%3Cjstor_pnas_%3E27979328%3C/jstor_pnas_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=887101529&rft_id=info:pmid/21873217&rft_jstor_id=27979328&rfr_iscdi=true |