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dc.contributor.author Santana, Sharlene E.
dc.contributor.author Grosse, Ian R.
dc.contributor.author Dumont, Elizabeth R.
dc.date.accessioned 2012-02-17T16:55:51Z
dc.date.available 2012-02-17T16:55:51Z
dc.date.issued 2012-03-02
dc.identifier doi:10.5061/dryad.d548646j
dc.identifier.citation Santana SE, Grosse IR, Dumont ER (2012) Dietary hardness, loading behavior, and the evolution of skull form in bats. Evolution 66(8): 2587-2598.
dc.identifier.uri http://hdl.handle.net/10255/dryad.37911
dc.description The morphology and biomechanics of the vertebrate skull reflect the physical properties of diet and behaviors used in food acquisition and processing. We use phyllostomid bats, the most diverse mammalian dietary radiation, to investigate if and how changes in dietary hardness and loading behaviors during feeding shaped the evolution of skull morphology and biomechanics. When selective regimes of food hardness are modeled, we found that species consuming harder foods have evolved skull shapes that allow for more efficient bite force production. These species have shorter skulls and a greater reliance on the temporalis muscle, both of which contribute to a higher mechanical advantage at an intermediate gape angle. The evolution of cranial morphology and biomechanics also appears to be related to loading behaviors. Evolutionary changes in skull shape and the relative role of the temporalis and masseter in generating bite force are correlated with changes in the use of torsional and bending loading behaviors. Functional equivalence appears to have evolved independently among three lineages of species that feed on liquids and are not obviously morphologically similar. These trends in cranial morphology and biomechanics provide insights into behavioral and ecological factors shaping the skull of a trophically diverse clade of mammals.
dc.relation.haspart doi:10.5061/dryad.d548646j/1
dc.relation.haspart doi:10.5061/dryad.d548646j/2
dc.relation.haspart doi:10.5061/dryad.d548646j/3
dc.relation.isreferencedby doi:10.1111/j.1558-5646.2012.01615.x
dc.relation.isreferencedby PMID:22834755
dc.subject Frugivory
dc.subject Bite force
dc.subject Biomechanics
dc.subject Finite element analysis
dc.subject Mechanical advantage
dc.title Data from: Dietary hardness, loading behavior, and the evolution of skull form in bats
dc.type Article *
dwc.ScientificName Phyllostomidae
dc.contributor.correspondingAuthor Santana, Sharlene E.
prism.publicationName Evolution

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Title Table 1_Diet, MA, PC, Moments
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Description Diet, mechanical advantage, skull shape and biomechanical variables for the phyllostomid bat species studies. Morphological data collected from dry skulls and biomechanical variables generated through a 3D bite force model
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Title Table 2_Strain values_Bilateral biting
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Description Values of tensile and compressive strains during finite element simulations of bilateral molar biting
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Title Tables 3_Strain values_Unilateral biting
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Description Values of tensile and compressive strains during finite element simulations of unilateral molar biting
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