Publication
Title
Cranial muscle architecture in wild boar : does captivity drive ontogenetic trajectories?
Author
Abstract
The jaw system in mammals is complex and different muscle morphotypes have been documented. Pigs are an interesting group of animals as they are omnivorous and have a bunodont crushing dentition. Moreover, they have interacted with humans for over 10,000 years and grow nearly two orders of magnitude in size. Despite being a model system for studies on cranial form and function, data on the growth of the jaw adductor muscles are scant. Moreover, whether captivity impacts the growth and architecture of the jaw adductors remains unknown. Based on dissection data of the jaw adductors of 45 animals ranging from less than 1 kg to almost 100 kg, we show that muscle masses, muscle fiber lengths, and cross-sectional areas scale as predicted for geometrically similar systems or with slight negative allometry. Only the fiber length of the lateral pterygoid muscle grew with slight positive allometry. Animals raised in captivity in stalls or in an enclosure were overall very similar to wild animals. However, some muscles were larger in captive animals. Interestingly, variation in bite force in captive animals was well predicted by the variation in the size of the superficial masseter muscle relative to the overall jaw adductor mass. We show that muscle masses, muscle fiber lengths, and cross-sectional areas in wild boar scale as predicted for geometrically similar systems or with slight negative allometry. Animals raised in captivity in stalls or in an enclosure were overall very similar to wild animals.image
Language
English
Source (journal)
Journal of morphology. - Philadelphia, Pa, 1931, currens
Publication
Philadelphia, Pa : 2024
ISSN
0362-2525 [print]
1097-4687 [online]
DOI
10.1002/JMOR.21676
Volume/pages
285 :2 (2024) , p. 1-10
Article Reference
e21676
ISI
001142121500001
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 01.02.2024
Last edited 06.02.2024
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