@article{Hulsey2020-09-01Conve-50083,
  year={2020},
  doi={10.1093/icb/icaa089},
  title={Convergent Evolution of Cichlid Fish Pharyngeal Jaw Dentitions in Mollusk-crushing Predators : Comparative X-ray Computed Tomography of Tooth Sizes, Numbers, and Replacement},
  number={3},
  volume={60},
  issn={1540-7063},
  journal={Integrative and Comparative Biology},
  pages={656--664},
  author={Hulsey, Christopher Darrin and Meyer, Axel and Streelman, J. Todd}
}

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    <dc:language>eng</dc:language>
    <dc:contributor>Hulsey, Christopher Darrin</dc:contributor>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-07-01T11:23:02Z</dc:date>
    <dc:creator>Meyer, Axel</dc:creator>
    <dc:creator>Streelman, J. Todd</dc:creator>
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    <dcterms:abstract xml:lang="eng">Dental convergence is a hallmark of cichlid fish adaptive radiations. This type of repeated evolution characterizes both the oral jaws of these fishes as well as their pharyngeal jaws that are modified gill arches used to functionally process prey like hard-shelled mollusks. To test several hypotheses regarding the evolution of cichlid crushing pharyngeal dentitions, we used x-ray computed tomography (CT) scans to comparatively examine dental evolution in the pharyngeal jaw of a diversity of New World Heroine cichlid lineages. The substantial variation in erupted tooth sizes and numbers as well as replacement teeth found in these fishes showed several general patterns. Larger toothed species tended to have fewer teeth suggesting a potential role of spatial constraints in cichlid dental divergence. Species with larger numbers of erupted pharyngeal teeth also had larger numbers of replacement teeth. Replacement tooth size is almost exactly predicted (r = 0.99) from the size of erupted teeth across all of the species. Mollusk crushing was therefore highly associated with not only larger pharyngeal teeth, but also larger replacement teeth. Whether dental divergence arises as a result of environmental induced plasticity or originates via trophic polymorphism as found in the species Herichthys minckleyi, there appear to be general rules that structure interspecific divergence in cichlid pharyngeal erupted and replacement dentitions.</dcterms:abstract>
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    <dc:contributor>Meyer, Axel</dc:contributor>
    <dc:contributor>Streelman, J. Todd</dc:contributor>
    <dcterms:title>Convergent Evolution of Cichlid Fish Pharyngeal Jaw Dentitions in Mollusk-crushing Predators : Comparative X-ray Computed Tomography of Tooth Sizes, Numbers, and Replacement</dcterms:title>
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    <dc:creator>Hulsey, Christopher Darrin</dc:creator>
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