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...
Published in: | Journal of Anatomy |
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2021
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ftuniaarhuspubl:oai:pure.atira.dk:publications/8329d53c-3e63-48e2-9e44-7f2842f712af 2023-12-10T09:54:20+01:00 Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) Frainer, Guilherme Huggenberger, Stefan Moreno, Ignacio B. Plön, Stephanie Galatius, Anders 2021-05 https://pure.au.dk/portal/da/publications/head-adaptation-for-sound-production-and-feeding-strategy-in-dolphins-odontoceti-delphinida(8329d53c-3e63-48e2-9e44-7f2842f712af).html https://doi.org/10.1111/joa.13364 eng eng https://pure.au.dk/portal/da/publications/head-adaptation-for-sound-production-and-feeding-strategy-in-dolphins-odontoceti-delphinida(8329d53c-3e63-48e2-9e44-7f2842f712af).html info:eu-repo/semantics/restrictedAccess Frainer , G , Huggenberger , S , Moreno , I B , Plön , S & Galatius , A 2021 , ' Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) ' , Journal of Anatomy , vol. 238 , no. 5 , pp. 1070-1081 . https://doi.org/10.1111/joa.13364 3D morphometrics echolocation feeding strategy macroevolution ontogeny toothed whales TURSIOPS-TRUNCATUS R PACKAGE SKULL SHAPE WHALES EVOLUTION MORPHOLOGY PORPOISE HISTORY TRANSMISSION DIVERSIFICATION article 2021 ftuniaarhuspubl https://doi.org/10.1111/joa.13364 2023-11-16T00:00:32Z 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. Article in Journal/Newspaper toothed whales Aarhus University: Research Journal of Anatomy 238 5 1070 1081 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
3D morphometrics echolocation feeding strategy macroevolution ontogeny toothed whales TURSIOPS-TRUNCATUS R PACKAGE SKULL SHAPE WHALES EVOLUTION MORPHOLOGY PORPOISE HISTORY TRANSMISSION DIVERSIFICATION |
spellingShingle |
3D morphometrics echolocation feeding strategy macroevolution ontogeny toothed whales TURSIOPS-TRUNCATUS R PACKAGE SKULL SHAPE WHALES EVOLUTION MORPHOLOGY PORPOISE HISTORY TRANSMISSION DIVERSIFICATION 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 |
3D morphometrics echolocation feeding strategy macroevolution ontogeny toothed whales TURSIOPS-TRUNCATUS R PACKAGE SKULL SHAPE WHALES EVOLUTION MORPHOLOGY PORPOISE HISTORY TRANSMISSION DIVERSIFICATION |
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 |
Article in Journal/Newspaper |
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) |
publishDate |
2021 |
url |
https://pure.au.dk/portal/da/publications/head-adaptation-for-sound-production-and-feeding-strategy-in-dolphins-odontoceti-delphinida(8329d53c-3e63-48e2-9e44-7f2842f712af).html https://doi.org/10.1111/joa.13364 |
genre |
toothed whales |
genre_facet |
toothed whales |
op_source |
Frainer , G , Huggenberger , S , Moreno , I B , Plön , S & Galatius , A 2021 , ' Head adaptation for sound production and feeding strategy in dolphins (Odontoceti: Delphinida) ' , Journal of Anatomy , vol. 238 , no. 5 , pp. 1070-1081 . https://doi.org/10.1111/joa.13364 |
op_relation |
https://pure.au.dk/portal/da/publications/head-adaptation-for-sound-production-and-feeding-strategy-in-dolphins-odontoceti-delphinida(8329d53c-3e63-48e2-9e44-7f2842f712af).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/joa.13364 |
container_title |
Journal of Anatomy |
container_volume |
238 |
container_issue |
5 |
container_start_page |
1070 |
op_container_end_page |
1081 |
_version_ |
1784901703595720704 |