Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach
The false killer whale (Pseudorca crassidens (Owen, 1846)) is a globally distributed delphinid that shows geographical differentiation in its skull morphology. We explored cranial morphological variation in a sample of 85 skulls belonging to a mixed sex population stranded in the Moray Firth, Scotla...
Published in: | Canadian Journal of Zoology |
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Canadian Science Publishing
2022
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Online Access: | http://researchonline.ljmu.ac.uk/id/eprint/16917/ https://researchonline.ljmu.ac.uk/id/eprint/16917/8/Skull%20morphological%20variation%20in%20a%20British%20stranded%20population%20of%20false%20killer%20whale.pdf https://doi.org/10.1139/cjz-2021-0112 |
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ftliverpooljmu:oai:researchonline.ljmu.ac.uk:16917 2023-05-15T17:03:24+02:00 Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach Vicari, D Sabin, RC Brown, RP Lambert, O Bianucci, G Meloro, C 2022-01-07 text http://researchonline.ljmu.ac.uk/id/eprint/16917/ https://researchonline.ljmu.ac.uk/id/eprint/16917/8/Skull%20morphological%20variation%20in%20a%20British%20stranded%20population%20of%20false%20killer%20whale.pdf https://doi.org/10.1139/cjz-2021-0112 en eng Canadian Science Publishing https://researchonline.ljmu.ac.uk/id/eprint/16917/8/Skull%20morphological%20variation%20in%20a%20British%20stranded%20population%20of%20false%20killer%20whale.pdf Vicari, D, Sabin, RC, Brown, RP, Lambert, O, Bianucci, G and Meloro, C (2022) Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach. Canadian Journal of Zoology, 100 (2). pp. 119-132. ISSN 0008-4301 doi:10.1139/cjz-2021-0112 GE Environmental Sciences QH301 Biology QL Zoology Article PeerReviewed 2022 ftliverpooljmu https://doi.org/10.1139/cjz-2021-0112 2023-03-16T23:27:35Z The false killer whale (Pseudorca crassidens (Owen, 1846)) is a globally distributed delphinid that shows geographical differentiation in its skull morphology. We explored cranial morphological variation in a sample of 85 skulls belonging to a mixed sex population stranded in the Moray Firth, Scotland, in 1927. A three-dimensional digitizer (Microscribe 2GX) was used to record 37 anatomical landmarks on the cranium and 25 on the mandible to investigate size and shape variation and to explore sexual dimorphism using geometric morphometric. Males showed greater overall skull size than females, whereas no sexual dimorphism could be identified in cranial and mandibular shape. Allometric skull changes occurred in parallel for both males and females, supporting the lack of sexual shape dimorphism for this particular sample. Also, fluctuating asymmetry did not differ between crania of males and females. This study confirms the absence of sexual shape dimorphism and the presence of a sexual size dimorphism in this false killer whale population. Article in Journal/Newspaper Killer Whale Liverpool John Moores University: LJMU Research Online Canadian Journal of Zoology 100 2 119 132 |
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Open Polar |
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Liverpool John Moores University: LJMU Research Online |
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ftliverpooljmu |
language |
English |
topic |
GE Environmental Sciences QH301 Biology QL Zoology |
spellingShingle |
GE Environmental Sciences QH301 Biology QL Zoology Vicari, D Sabin, RC Brown, RP Lambert, O Bianucci, G Meloro, C Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach |
topic_facet |
GE Environmental Sciences QH301 Biology QL Zoology |
description |
The false killer whale (Pseudorca crassidens (Owen, 1846)) is a globally distributed delphinid that shows geographical differentiation in its skull morphology. We explored cranial morphological variation in a sample of 85 skulls belonging to a mixed sex population stranded in the Moray Firth, Scotland, in 1927. A three-dimensional digitizer (Microscribe 2GX) was used to record 37 anatomical landmarks on the cranium and 25 on the mandible to investigate size and shape variation and to explore sexual dimorphism using geometric morphometric. Males showed greater overall skull size than females, whereas no sexual dimorphism could be identified in cranial and mandibular shape. Allometric skull changes occurred in parallel for both males and females, supporting the lack of sexual shape dimorphism for this particular sample. Also, fluctuating asymmetry did not differ between crania of males and females. This study confirms the absence of sexual shape dimorphism and the presence of a sexual size dimorphism in this false killer whale population. |
format |
Article in Journal/Newspaper |
author |
Vicari, D Sabin, RC Brown, RP Lambert, O Bianucci, G Meloro, C |
author_facet |
Vicari, D Sabin, RC Brown, RP Lambert, O Bianucci, G Meloro, C |
author_sort |
Vicari, D |
title |
Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach |
title_short |
Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach |
title_full |
Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach |
title_fullStr |
Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach |
title_full_unstemmed |
Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach |
title_sort |
skull morphological variation in a british stranded population of false killer whale (pseudorca crassidens, owen 1846): a 3d geometric morphometric approach |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://researchonline.ljmu.ac.uk/id/eprint/16917/ https://researchonline.ljmu.ac.uk/id/eprint/16917/8/Skull%20morphological%20variation%20in%20a%20British%20stranded%20population%20of%20false%20killer%20whale.pdf https://doi.org/10.1139/cjz-2021-0112 |
genre |
Killer Whale |
genre_facet |
Killer Whale |
op_relation |
https://researchonline.ljmu.ac.uk/id/eprint/16917/8/Skull%20morphological%20variation%20in%20a%20British%20stranded%20population%20of%20false%20killer%20whale.pdf Vicari, D, Sabin, RC, Brown, RP, Lambert, O, Bianucci, G and Meloro, C (2022) Skull morphological variation in a British stranded population of false killer whale (Pseudorca crassidens, Owen 1846): a 3D geometric morphometric approach. Canadian Journal of Zoology, 100 (2). pp. 119-132. ISSN 0008-4301 doi:10.1139/cjz-2021-0112 |
op_doi |
https://doi.org/10.1139/cjz-2021-0112 |
container_title |
Canadian Journal of Zoology |
container_volume |
100 |
container_issue |
2 |
container_start_page |
119 |
op_container_end_page |
132 |
_version_ |
1766057260424888320 |