Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina )
The study of mammal acoustic communication was revolutionized by the application of the source–filter theory, originally developed for human speech. The theory states that the vocal tract is constrained by body anatomy and, therefore, creates a structural link between phenotype and acoustic formants...
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crcansciencepubl:10.1139/cjz-2021-0188 2023-12-17T10:29:38+01:00 Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) Redaelli, Laura Galimberti, Filippo Sanvito, Simona 2022 http://dx.doi.org/10.1139/cjz-2021-0188 https://cdnsciencepub.com/doi/full-xml/10.1139/cjz-2021-0188 https://cdnsciencepub.com/doi/pdf/10.1139/cjz-2021-0188 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 100, issue 6, page 376-388 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2022 crcansciencepubl https://doi.org/10.1139/cjz-2021-0188 2023-11-19T13:38:53Z The study of mammal acoustic communication was revolutionized by the application of the source–filter theory, originally developed for human speech. The theory states that the vocal tract is constrained by body anatomy and, therefore, creates a structural link between phenotype and acoustic formants, providing a basis for honest signaling. The phenotype–formant link was validated in many species, but the phenotype–vocal tract link was rarely assessed. We used two dimensional (2D) videogrammetry to estimate the vocal tract length of wild southern elephant seal ( Mirounga leonina (Linnaeus, 1758)) males during their normal vocalization behavior. We showed that ( i) the vocal tract can be measured noninvasively in a large wild mammal; ( ii) the vocal tract depends on the structural phenotype (age, body length, and skull size); ( iii) the nasal tract is more related to the structural phenotype than the buccal tract; and ( iv) the dependence on size, and body length in particular, is stronger than the dependence on age. Altogether, the phenotypic constraint on the vocal tract provides the anatomical basis for honest signaling in elephant seals. Article in Journal/Newspaper Elephant Seal Elephant Seals Mirounga leonina Southern Elephant Seal Canadian Science Publishing (via Crossref) Canadian Journal of Zoology |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Redaelli, Laura Galimberti, Filippo Sanvito, Simona Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The study of mammal acoustic communication was revolutionized by the application of the source–filter theory, originally developed for human speech. The theory states that the vocal tract is constrained by body anatomy and, therefore, creates a structural link between phenotype and acoustic formants, providing a basis for honest signaling. The phenotype–formant link was validated in many species, but the phenotype–vocal tract link was rarely assessed. We used two dimensional (2D) videogrammetry to estimate the vocal tract length of wild southern elephant seal ( Mirounga leonina (Linnaeus, 1758)) males during their normal vocalization behavior. We showed that ( i) the vocal tract can be measured noninvasively in a large wild mammal; ( ii) the vocal tract depends on the structural phenotype (age, body length, and skull size); ( iii) the nasal tract is more related to the structural phenotype than the buccal tract; and ( iv) the dependence on size, and body length in particular, is stronger than the dependence on age. Altogether, the phenotypic constraint on the vocal tract provides the anatomical basis for honest signaling in elephant seals. |
format |
Article in Journal/Newspaper |
author |
Redaelli, Laura Galimberti, Filippo Sanvito, Simona |
author_facet |
Redaelli, Laura Galimberti, Filippo Sanvito, Simona |
author_sort |
Redaelli, Laura |
title |
Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) |
title_short |
Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) |
title_full |
Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) |
title_fullStr |
Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) |
title_full_unstemmed |
Phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( Mirounga leonina ) |
title_sort |
phenotype constrains the vocal tract in the most dimorphic mammal, the southern elephant seal ( mirounga leonina ) |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/cjz-2021-0188 https://cdnsciencepub.com/doi/full-xml/10.1139/cjz-2021-0188 https://cdnsciencepub.com/doi/pdf/10.1139/cjz-2021-0188 |
genre |
Elephant Seal Elephant Seals Mirounga leonina Southern Elephant Seal |
genre_facet |
Elephant Seal Elephant Seals Mirounga leonina Southern Elephant Seal |
op_source |
Canadian Journal of Zoology volume 100, issue 6, page 376-388 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2021-0188 |
container_title |
Canadian Journal of Zoology |
_version_ |
1785582058609836032 |