The implications of bite performance for diet in two species of lacertid lizards

Herrel, Anthony; Damme, Raoul Van; Vanhooydonck, Bieke; Vree, F. De

doi:10.1139/cjz-79-4-662

Cited by 171 publications

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“…In contrast, positive allometry of bite force in H. colliei can be attributed to changes in the MA of the feeding mechanism because the jaw musculature grows isometrically. Regardless of the underlying developmental mechanism, recent studies suggest that hyperallometric increases in bite force may be a general phenomenon among vertebrates because high bite force is correlated with increased prey handling efficiency and reduced trophic energy expenditure (Herrel et al 2001;Verwaijen et al 2002;Herrel & Gibb 2006).…”

Section: Ontogeny Of Feeding Biomechanicsmentioning

confidence: 99%

Hard prey, soft jaws and the ontogeny of feeding mechanics in the spotted ratfishHydrolagus colliei

Huber

Dean

Summers

2008

J. R. Soc. Interface.

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The spotted ratfish Hydrolagus colliei is a holocephalan fish that consumes hard prey (durophagy) but lacks many morphological characters associated with durophagy in other cartilaginous fishes. We investigated its feeding biomechanics and biting performance to determine whether it can generate bite forces comparable with other durophagous elasmobranchs, how biting performance changes over ontogeny (21-44 cm SL) and whether biomechanical modelling can accurately predict feeding performance in holocephalans. Hydrolagus colliei can generate absolute and mass-specific bite forces comparable with other durophagous elasmobranchs (anteriorZ104 N, posteriorZ191 N) and has the highest jaw leverage of any cartilaginous fish studied. Modelling indicated that cranial geometry stabilizes the jaw joint by equitably distributing forces throughout the feeding mechanism and that positive allometry of bite force is due to hyperallometric mechanical advantage. However, bite forces measured through tetanic stimulation of the adductor musculature increased isometrically. The jaw adductors of H. colliei fatigued more rapidly than those of the piscivorous spiny dogfish Squalus acanthias as well. The feeding mechanism of H. colliei is a volume-constrained system in which negative allometry of cranial dimensions leaves relatively less room for musculature. Jaw adductor force, however, is maintained through ontogenetic changes in muscle architecture.

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Section: Ontogeny Of Feeding Biomechanicsmentioning

confidence: 99%

Hard prey, soft jaws and the ontogeny of feeding mechanics in the spotted ratfishHydrolagus colliei

Huber

Dean

Summers

2008

J. R. Soc. Interface.

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“…This diversity is directly linked to the behavioral capacity (performance) of an organism to exploit the resources associated with its niche. Bite force as a performance measure has been shown to affect dietary diversity and niche overlap in both terrestrial and aquatic vertebrates (Kiltie, '82;Wainwright, '88;Herrel et al, 2001b). For example, the generated magnitude of bite force was shown to be the limiting factor on the size of barnacles consumed by an ontogenetic series of sheepshead Archosargus probatocephalus, with those individuals capable of greater bite forces canalizing their diet to exploit a novel resource (large barnacles) that most other fish are incapable of consuming (Hernandez and Motta,'97).…”

Section: Discussionmentioning

confidence: 99%

“…Bite force has been shown to affect the timing of ontogenetic diet shifts (Hernandez and Motta,'97;Clifton and Motta,'98), breadth of dietary diversity (Wainwright,'87,'88;Clifton and Motta,'98), niche diversification (Kiltie, '82;Herrel et al, 2001b), exemplify patterns of sexual dimorphism (Herrel et al,'99), and has been used to indicate the functional effects of morphological transitions in muscle placement throughout evolution (Dechow and Carlson,'83;Thomason and Russell,'86). In all cases, the magnitude of generated bite force was a limiting factor on resource utilization.…”

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confidence: 99%

“…The mechanical demands of the feeding mechanism may be the most influential of these because the loading regimes associated with feeding are the greatest in magnitude of those experienced by the cranium (Demes,'82). However, cranial design must be optimized to both withstand these loading regimes and efficiently exploit food resources necessary for survival (Alexander, '92;Herrel et al, 2001b). Knowledge of both the magnitude and the mechanism by which force generated by the cranial musculature is transmitted to the jaws during feeding is critical to our understanding of the diversity of cranial form in gnathostomes (Ringqvist, '72;Raadsheer et al, '99;Ravosa et al, 2000) and their feeding ecology (Wainwright, '87;Hernandez and Motta, '97;Herrel et al, 2001a, b).…”

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confidence: 99%

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Comparative analysis of methods for determining bite force in the spiny dogfish Squalus acanthias

Huber

Motta

2003

J. Exp. Zool.

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Many studies have identified relationships between the forces generated by the cranial musculature during feeding and cranial design. Particularly important to understanding the diversity of cranial form amongst vertebrates is knowledge of the generated magnitudes of bite force because of its use as a measure of ecological performance. In order to determine an accurate morphological proxy for bite force in elasmobranchs, theoretical force generation by the quadratomandibularis muscle of the spiny dogfish Squalus acanthias was modeled using a variety of morphological techniques, and lever-ratio analyses were used to determine resultant bite forces. These measures were compared to in vivo bite force measurements obtained with a pressure transducer during tetanic stimulation experiments of the quadratomandibularis. Although no differences were found between the theoretical and in vivo bite forces measured, modeling analyses indicate that the quadratomandibularis muscle should be divided into its constituent divisions and digital images of the cross-sections of these divisions should be used to estimate cross-sectional area when calculating theoretical force production. From all analyses the maximum bite force measured was 19.57 N. This relatively low magnitude of bite force is discussed with respect to the ecomorphology of the feeding mechanism of S. acanthias to demonstrate the interdependence of morphology, ecology, and behavior in organismal design.

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“…However, as far as the objective of this sensitivity study is concerned, a simplified boundary condition was imposed on the skull. The skull was loaded under a 10 N vertical load, which represented the bite force (similar to the experimental data of Herrel et al, 2001Herrel et al, , 2004 via the most anterior teeth, while three nodes at the posterior part of the skull were fully constrained (occipital condyle; see Fig. 1c).…”

Section: Boundary Conditionsmentioning

confidence: 99%

A Sensitivity Analysis to the Role of the Fronto‐Parietal Suture in Lacerta Bilineata: A Preliminary Finite Element Study

Moazen

Bruner

2012

The Anatomical Record

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Cranial sutures are sites of bone growth and development but micromovements at these sites may distribute the load across the skull more evenly. Computational studies have incorporated sutures into finite element (FE) models to assess various hypotheses related to their function. However, less attention has been paid to the sensitivity of the FE results to the shape, size, and stiffness of the modeled sutures. Here, we assessed the sensitivity of the strain predictions to the aforementioned parameters in several models of fronto-parietal (FP) suture in Lacerta bilineata. For the purpose of this study, simplifications were made in relation to modeling the bone properties and the skull loading. Results highlighted that modeling the FP as either an interdigitated suture or a simplified butt suture, did not reduce the strain distribution in the FP region. Sensitivity tests showed that similar patterns of strain distribution can be obtained regardless of the size of the suture, or assigned stiffness, yet the exact magnitudes of strains are highly sensitive to these parameters. This study raises the question whether the morphogenesis of epidermic scales in the FP region in the Lacertidae is related to high strain fields in this region, because of micromovement in the FP suture. Anat Rec, 296:198-209, 2013. V C 2012 Wiley Periodicals, Inc.Key words: biomechanics; lizard; skull; finite element analysis Sutures are sites of bone deposition and growth, which undergo many changes in terms of their stiffness and form over the growth and development of the skull (Herring, 2008). However, the role and function of sutures in the adult skull has been the subject of debate among functional morphologists and palaeontologists. In fact, in a lot of taxa, many sutures do not fuse after the growth and developmental processes have effectively terminated, and the possible biomechanical roles of these elements during ontogeny and phylogeny are still not fully understood (

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The implications of bite performance for diet in two species of lacertid lizards

Cited by 171 publications

References 0 publications

Hard prey, soft jaws and the ontogeny of feeding mechanics in the spotted ratfishHydrolagus colliei

Hard prey, soft jaws and the ontogeny of feeding mechanics in the spotted ratfishHydrolagus colliei

Comparative analysis of methods for determining bite force in the spiny dogfish Squalus acanthias

A Sensitivity Analysis to the Role of the Fronto‐Parietal Suture in Lacerta Bilineata: A Preliminary Finite Element Study

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