Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers

The value of birds’ ability to move the upper beak relative to the braincase has been shown in vital tasks like feeding and singing. In woodpeckers, such cranial kinesis has been thought to hinder pecking as delivering forceful blows calls for a head functioning as a rigid unit. Here, we tested whet...

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Autores principales: Lyons, Sebastián, Baeckens, Simon, Van Wassenbergh, Sam
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Ciencias Naturales
birds
cranial kinesis
biomechanics
functional morphology
ecomorphology
jaws
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/161135
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-161135
record_format dspace
spelling I19-R120-10915-1611352023-12-05T20:08:35Z http://sedici.unlp.edu.ar/handle/10915/161135 Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers Lyons, Sebastián Baeckens, Simon Van Wassenbergh, Sam 2023-06-07 2023-12-05T17:40:49Z en Ciencias Naturales birds cranial kinesis biomechanics functional morphology ecomorphology jaws The value of birds’ ability to move the upper beak relative to the braincase has been shown in vital tasks like feeding and singing. In woodpeckers, such cranial kinesis has been thought to hinder pecking as delivering forceful blows calls for a head functioning as a rigid unit. Here, we tested whether cranial kinesis is constrained in woodpeckers by comparing upper beak rotation during their daily activities such as food handling, calling and gaping with those from closely related species that also have a largely insectivorous diet but do not peck at wood. Both woodpeckers and non-woodpecker insectivores displayed upper beak rotations of up to 8 degrees. However, the direction of upper beak rotation differed significantly between the two groups, with woodpeckers displaying primarily depressions and non-woodpeckers displaying elevations. The divergent upper beak rotation of woodpeckers may be caused either by anatomical modifications to the craniofacial hinge that reduce elevation, by the caudal orientation of the mandible depressor muscle forcing beak depressions, or by both. Our results suggest that pecking does not result in plain rigidification at the upper beak's basis of woodpeckers, but it nevertheless significantly influences the way cranial kinesis is manifested. Este trabajo tiene asociado un conjunto de datos, al que puede accederse en "Documentos relacionados". Facultad de Ciencias Naturales y Museo Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
birds
cranial kinesis
biomechanics
functional morphology
ecomorphology
jaws
spellingShingle Ciencias Naturales
birds
cranial kinesis
biomechanics
functional morphology
ecomorphology
jaws
Lyons, Sebastián
Baeckens, Simon
Van Wassenbergh, Sam
Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
topic_facet Ciencias Naturales
birds
cranial kinesis
biomechanics
functional morphology
ecomorphology
jaws
description The value of birds’ ability to move the upper beak relative to the braincase has been shown in vital tasks like feeding and singing. In woodpeckers, such cranial kinesis has been thought to hinder pecking as delivering forceful blows calls for a head functioning as a rigid unit. Here, we tested whether cranial kinesis is constrained in woodpeckers by comparing upper beak rotation during their daily activities such as food handling, calling and gaping with those from closely related species that also have a largely insectivorous diet but do not peck at wood. Both woodpeckers and non-woodpecker insectivores displayed upper beak rotations of up to 8 degrees. However, the direction of upper beak rotation differed significantly between the two groups, with woodpeckers displaying primarily depressions and non-woodpeckers displaying elevations. The divergent upper beak rotation of woodpeckers may be caused either by anatomical modifications to the craniofacial hinge that reduce elevation, by the caudal orientation of the mandible depressor muscle forcing beak depressions, or by both. Our results suggest that pecking does not result in plain rigidification at the upper beak's basis of woodpeckers, but it nevertheless significantly influences the way cranial kinesis is manifested.
format Articulo
Articulo
author Lyons, Sebastián
Baeckens, Simon
Van Wassenbergh, Sam
author_facet Lyons, Sebastián
Baeckens, Simon
Van Wassenbergh, Sam
author_sort Lyons, Sebastián
title Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
title_short Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
title_full Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
title_fullStr Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
title_full_unstemmed Upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
title_sort upper beak depression instead of elevation dominates cranial kinesis in woodpeckers
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/161135
work_keys_str_mv AT lyonssebastian upperbeakdepressioninsteadofelevationdominatescranialkinesisinwoodpeckers
AT baeckenssimon upperbeakdepressioninsteadofelevationdominatescranialkinesisinwoodpeckers
AT vanwassenberghsam upperbeakdepressioninsteadofelevationdominatescranialkinesisinwoodpeckers
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