Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida)
Head morphology in toothed whales evolved under selective pressures on feeding strategy and sound production. The postnatal development of the skull (n = 207) and mandible (n = 219) of six Delphinida species which differ in feeding strategy but exhibit similar sound emission patterns, including two...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8053589/ http://www.ncbi.nlm.nih.gov/pubmed/33319356 https://doi.org/10.1111/joa.13364 |
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ftpubmed:oai:pubmedcentral.nih.gov:8053589 2023-06-11T04:17:20+02:00 Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) Frainer, Guilherme Huggenberger, Stefan Moreno, Ignacio B. Plön, Stephanie Galatius, Anders 2020-12-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8053589/ http://www.ncbi.nlm.nih.gov/pubmed/33319356 https://doi.org/10.1111/joa.13364 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8053589/ http://www.ncbi.nlm.nih.gov/pubmed/33319356 http://dx.doi.org/10.1111/joa.13364 © 2020 Anatomical Society J Anat Original Papers Text 2020 ftpubmed https://doi.org/10.1111/joa.13364 2023-05-07T00:37:41Z Head morphology in toothed whales evolved under selective pressures on feeding strategy and sound production. The postnatal development of the skull (n = 207) and mandible (n = 219) of six Delphinida species which differ in feeding strategy but exhibit similar sound emission patterns, including two narrow‐band high‐frequency species, were investigated through 3D morphometrics. Morphological changes throughout ontogeny were demonstrated based on the main source of variation (i.e., prediction lines) and the common allometric component. Multivariate trajectory analysis with pairwise comparisons between all species was performed to evaluate specific differences on the postnatal development of skulls and mandibles. Changes in the rostrum formation contributed to the variation (skull: 49%; mandible: 90%) of the entire data set and might not only reflect the feeding strategy adopted by each lineage but also represents an adaptation for sound production and reception. As an important structure for directionality of sound emissions, this may increase directionality in raptorial feeders. Phylogenetic generalized least squares analyses indicated that shape of the anterior portion of the skull is strongly dependent on phylogeny and might not only reflect feeding mode, but also morphological adaptations for sound production, particularly in raptorial species. Thus, postnatal development seems to represent a crucial stage for biosonar maturation in some raptorial species such as Pontoporia blainvillei and Sousa plumbea. The ontogeny of their main tool for navigation and hunting might reflect their natural history peculiarities and thus potentially define their main vulnerabilities to anthropogenic changes in the environment. Text toothed whales PubMed Central (PMC) Journal of Anatomy 238 5 1070 1081 |
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Original Papers Frainer, Guilherme Huggenberger, Stefan Moreno, Ignacio B. Plön, Stephanie Galatius, Anders Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) |
topic_facet |
Original Papers |
description |
Head morphology in toothed whales evolved under selective pressures on feeding strategy and sound production. The postnatal development of the skull (n = 207) and mandible (n = 219) of six Delphinida species which differ in feeding strategy but exhibit similar sound emission patterns, including two narrow‐band high‐frequency species, were investigated through 3D morphometrics. Morphological changes throughout ontogeny were demonstrated based on the main source of variation (i.e., prediction lines) and the common allometric component. Multivariate trajectory analysis with pairwise comparisons between all species was performed to evaluate specific differences on the postnatal development of skulls and mandibles. Changes in the rostrum formation contributed to the variation (skull: 49%; mandible: 90%) of the entire data set and might not only reflect the feeding strategy adopted by each lineage but also represents an adaptation for sound production and reception. As an important structure for directionality of sound emissions, this may increase directionality in raptorial feeders. Phylogenetic generalized least squares analyses indicated that shape of the anterior portion of the skull is strongly dependent on phylogeny and might not only reflect feeding mode, but also morphological adaptations for sound production, particularly in raptorial species. Thus, postnatal development seems to represent a crucial stage for biosonar maturation in some raptorial species such as Pontoporia blainvillei and Sousa plumbea. The ontogeny of their main tool for navigation and hunting might reflect their natural history peculiarities and thus potentially define their main vulnerabilities to anthropogenic changes in the environment. |
format |
Text |
author |
Frainer, Guilherme Huggenberger, Stefan Moreno, Ignacio B. Plön, Stephanie Galatius, Anders |
author_facet |
Frainer, Guilherme Huggenberger, Stefan Moreno, Ignacio B. Plön, Stephanie Galatius, Anders |
author_sort |
Frainer, Guilherme |
title |
Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) |
title_short |
Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) |
title_full |
Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) |
title_fullStr |
Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) |
title_full_unstemmed |
Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) |
title_sort |
head adaptation for sound production and feeding strategy in dolphins (odontoceti: delphinida) |
publisher |
John Wiley and Sons Inc. |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8053589/ http://www.ncbi.nlm.nih.gov/pubmed/33319356 https://doi.org/10.1111/joa.13364 |
genre |
toothed whales |
genre_facet |
toothed whales |
op_source |
J Anat |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8053589/ http://www.ncbi.nlm.nih.gov/pubmed/33319356 http://dx.doi.org/10.1111/joa.13364 |
op_rights |
© 2020 Anatomical Society |
op_doi |
https://doi.org/10.1111/joa.13364 |
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Journal of Anatomy |
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238 |
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5 |
container_start_page |
1070 |
op_container_end_page |
1081 |
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1768376431972188160 |