New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds

dc.contributor.authorCanoville, Aurore
dc.contributor.authorChinsamy, Anusuya
dc.contributor.authorAngst, Delphine
dc.date.accessioned2022-04-23T10:23:19Z
dc.date.available2022-04-23T10:23:19Z
dc.date.issued2022-04-15
dc.date.updated2022-04-21T21:03:48Z
dc.description.abstractHere, we investigate whether bone microanatomy can be used to infer the locomotion mode (cursorial vs. <i>graviportal</i>) of large terrestrial birds. We also reexamine, or describe for the first time, the bone histology of several large extant and extinct flightless birds to (i) document the histovariability between skeletal elements of the hindlimb; (ii) improve our knowledge of the histological diversity of large flightless birds; (iii) and reassess previous hypotheses pertaining to the growth strategies of modern palaeognaths. Our results show that large extinct terrestrial birds, inferred as <i>graviportal</i> based on hindlimb proportions, also have thicker diaphyseal cortices and/or more bony trabeculae in the medullary region than cursorial birds. We also report for the first time the occurrence of growth marks (not associated with an outer circumferential layer-OCL) in the cortices of several extant ratites. These observations support earlier hypotheses that flexible growth patterns can be present in birds when selection pressures for rapid growth within a single year are absent. We also document the occurrence of an OCL in several skeletally mature ratites. Here, the high incidence of pathologies among the modern species is attributed to the fact that these individuals were probably long-lived zoo specimens.en_US
dc.identifierdoi: 10.3390/d14040298
dc.identifier.apacitationCanoville, A., Chinsamy, A., & Angst, D. (2022). New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds. <i>Diversity</i>, 14(4), 298. http://hdl.handle.net/11427/36380en_ZA
dc.identifier.chicagocitationCanoville, Aurore, Anusuya Chinsamy, and Delphine Angst "New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds." <i>Diversity</i> 14, 4. (2022): 298. http://hdl.handle.net/11427/36380en_ZA
dc.identifier.citationCanoville, A., Chinsamy, A. & Angst, D. 2022. New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds. <i>Diversity.</i> 14(4):298. http://hdl.handle.net/11427/36380en_ZA
dc.identifier.ris TY - Journal Article AU - Canoville, Aurore AU - Chinsamy, Anusuya AU - Angst, Delphine AB - Here, we investigate whether bone microanatomy can be used to infer the locomotion mode (cursorial vs. <i>graviportal</i>) of large terrestrial birds. We also reexamine, or describe for the first time, the bone histology of several large extant and extinct flightless birds to (i) document the histovariability between skeletal elements of the hindlimb; (ii) improve our knowledge of the histological diversity of large flightless birds; (iii) and reassess previous hypotheses pertaining to the growth strategies of modern palaeognaths. Our results show that large extinct terrestrial birds, inferred as <i>graviportal</i> based on hindlimb proportions, also have thicker diaphyseal cortices and/or more bony trabeculae in the medullary region than cursorial birds. We also report for the first time the occurrence of growth marks (not associated with an outer circumferential layer-OCL) in the cortices of several extant ratites. These observations support earlier hypotheses that flexible growth patterns can be present in birds when selection pressures for rapid growth within a single year are absent. We also document the occurrence of an OCL in several skeletally mature ratites. Here, the high incidence of pathologies among the modern species is attributed to the fact that these individuals were probably long-lived zoo specimens. DA - 2022-04-15 DB - OpenUCT DP - University of Cape Town IS - 4 J1 - Diversity KW - terrestrial birds KW - flightless birds KW - Palaeognathae KW - bone histology KW - microanatomy KW - growth marks KW - avian pathologies LK - https://open.uct.ac.za PY - 2022 T1 - New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds TI - New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds UR - http://hdl.handle.net/11427/36380 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/36380
dc.identifier.vancouvercitationCanoville A, Chinsamy A, Angst D. New Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birds. Diversity. 2022;14(4):298. http://hdl.handle.net/11427/36380.en_ZA
dc.language.isoenen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyFaculty of Scienceen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceDiversityen_US
dc.source.journalissue4en_US
dc.source.journalvolume14en_US
dc.source.pagination298en_US
dc.source.urihttps://www.mdpi.com/journal/diversity
dc.subjectterrestrial birds
dc.subjectflightless birds
dc.subjectPalaeognathae
dc.subjectbone histology
dc.subjectmicroanatomy
dc.subjectgrowth marks
dc.subjectavian pathologies
dc.titleNew Comparative Data on the Long Bone Microstructure of Large Extant and Extinct Flightless Birdsen_US
dc.typeJournal Articleen_US
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