Food consistency and bite size as regulators of jaw movement during feeding in the cat.

Thexton, A.J.; Hiiemäe, Karen M.; Crompton, A. W.

doi:10.1152/jn.1980.44.3.456

Cited by 211 publications

(99 citation statements)

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“…This has been shown to be the case for tortoises (Bramble and Wake, 1985), an agamid lizard (Herrel et al, 1996) and cats (Thexton et al, 1980), but not in Pogona vitticeps, one of the species used in this study (Schaerlaeken et al, 2008). It is also predicted that the duration of the SO phase, as a percentage of the overall gape cycle duration (relative SO duration), should increase, in concurrence with a previous study of variability during feeding in lizards (Herrel et al, 1996).…”

Section: Hypotheses Testing Related To Prey Propertiessupporting

confidence: 89%

“…Numerous studies have found that when bolus size is experimentally altered, there is a positive relationship with transport cycle duration (Thexton et al, 1980;Miyawaki et al, 2001;Bhatka et al, 2004) and gape distance (Lucas et al, 1986;Van der Bilt et al, 1991;Miyawaki et al, 2001). Studies examining variation based on changes in prey hardness and consistency have been more numerous and have reported somewhat conflicting results.…”

Section: Comparison With Mammalian Feeding Studiesmentioning

confidence: 99%

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Quantitative analysis of the effect of prey properties on feeding kinematics in two species of lizards

Metzger

2009

Journal of Experimental Biology

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SUMMARYStudies of the functional morphology of feeding have typically not included an analysis of the potential for the kinematics of the gape cycle to vary based on the material properties of the prey item being consumed. Variation in prey properties is expected not only to reveal variation in feeding function, but allows testing of the functional role of the phases of the gape cycle. The jaw kinematics of two species of lizards are analyzed when feeding trials are conducted using quantitative control of prey mass, hardness and mobility. For both species, there were statistically significant prey effects on feeding kinematics for all the prey properties evaluated (i.e. prey mass, hardness and mobility). Of these three prey properties, prey mass had a more significant effect on feeding kinematics than prey hardness or mobility. Revealing the impact of varying prey properties on feeding kinematics helps to establish the baseline level of functional variability in the feeding system. Additionally, these data confirm the previously hypothesized functional role of the slow open (SO) phase of the gape cycle as allowing for physical conformation of the tongue to the surface of the food bolus in preparation for further intraoral transport.

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Section: Hypotheses Testing Related To Prey Propertiessupporting

confidence: 89%

Section: Comparison With Mammalian Feeding Studiesmentioning

confidence: 99%

Quantitative analysis of the effect of prey properties on feeding kinematics in two species of lizards

Metzger

2009

Journal of Experimental Biology

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“…The duration of closing was not as shortened as were the durations of the opening and occlusal phases during the experimental reduction in T C via increased metronome speeds. The authors suggested that their results for the opening phase corroborated the findings for the cat (Thexton et al, 1980), which findings we presented in Section 5.1.1; however, because the cat lacks an occlusal phase, the cat would not be expected to have an occlusal phase to modulate. On the other hand, in a similar experiment performed by Plesh, et al (Plesh et al, 1987), all phases showed similar reductions in duration as the driven speed of mastication was increased.…”

Section: Phase Modulation In Driven Chewingsupporting

confidence: 77%

“…Work with cats (Hiiemae, 1976;Thexton et al, 1980) and rabbits (Morimoto et al, 1985) suggested that the durations of opening phases (particularly SO, Fig. 2) were correlated with T C .…”

Section: Phase Modulation and Chewing Series (Preparatory Reductionmentioning

confidence: 97%

Mammalian Oral Rhythms and Motor Control

Gerstner¹,

Madhavan²,

Crane³

2011

Biomechanics in Applications

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“…Additionally, a number of similarities exist in the masticatory apparatus of rabbits and anthropoids, including a vertically deep face, position, and movements of the temporomandibular joint (Weijs and Dantuma, 1981;Crompton et al, 2006) as well as transverse jaw movements and jaw-muscle activity patterns (Weijs and Dantuma, 1981;Weijs et al, 1989;Hylander et al, 2000;Vinyard et al, 2008). Similar to many mammals, rabbit jaw-adductor activity patterns vary with dietary properties (Herring and Scapino, 1973;Luschei and Goodwin, 1974;Gorniak and Gans, 1980;Thexton et al, 1980;Weijs et al, 1987Weijs et al, , 1989Gans et al, 1990;Dessem and Druzinsky, 1992;Hylander et al, 1992Hylander et al, , 2000Hylander et al, , 2005, such that increased jaw-adductor recruitment results in elevated peak strains along the mandible and higher TMJ reaction forces (Weijs and de Jongh, 1977;Hylander, 1979aHylander, ,b,c, 1992Hylander et al, 1998;. Lastly, previous work on rabbit mandibular plasticity responses to postweaning alteration of dietary properties and masticatory stresses is consistent with similar experiments in a variety of other mammals (Beecher and Corruccini, 1981;Bouvier and Hylander, 1981, 1982, 1996aBeecher et al, 1983;Kiliardis et al, 1985;Bouvier, 1987Bouvier, , 1988Bouvier and Zimny, 1987;Block et al, 1988;Yamada and Kimmel, 1991;Ravosa et al, 2007bRavosa et al, , 2008a.…”

Section: Experimental Model Of Craniofacial Plasticitymentioning

confidence: 99%

Phenotypic Plasticity and Function of the Hard Palate in Growing Rabbits

Menegaz

Sublett

Figueroa

et al. 2008

The Anatomical Record

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Morphological variation related to differential loading is well known for many craniomandibular elements. Yet, the function of the hard palate, and in particular the manner in which cortical and trabecular bone of the palate respond to masticatory loads, remains more ambiguous. Here, experimental data are presented that address the naturalistic influence of biomechanical loading on the postweaning development and structure of the hard palate. A rabbit model was used to test the hypothesis that variation in the morphology of the hard palate is linked to variation in masticatory stresses. Rabbit siblings were divided as weanlings into soft and hard/tough dietary treatment groups of 10 subjects each and were raised for 15 weeks until subadulthood. MicroCT analyses indicate that rabbits subjected to elevated masticatory loading developed hard palates with significantly greater bone area, greater cortical bone thickness along the oral lamina, and thicker anterior palates. Such diet-induced levels of palatal plasticity are comparable to those for other masticatory elements, which likely reflect osteogenic responses for maintaining the functional integrity of the palate vis-à -vis elevated stresses during unilateral mastication. These data support a role for mechanical loading in the determination of palatal morphology, especially its internal structure, in living and fossil mammals such as the hominin Paranthropus. Furthermore, these findings have potential implications for the evolution of the mammalian secondary hard palate as well as for clinical considerations of human oral pathologies.

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Food consistency and bite size as regulators of jaw movement during feeding in the cat.

Cited by 211 publications

References 0 publications

Quantitative analysis of the effect of prey properties on feeding kinematics in two species of lizards

Quantitative analysis of the effect of prey properties on feeding kinematics in two species of lizards

Mammalian Oral Rhythms and Motor Control

Phenotypic Plasticity and Function of the Hard Palate in Growing Rabbits

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