Morphology, Replacement Mechanisms, and Functional Conservation in Dental Replacement Patterns of the Bobcat (Felis rufus)
| Autor: | V. Rick McDaniel, Renn Tumlison |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Ecology
biology Lacteal Felis rufus Anatomy biology.organism_classification medicine.disease stomatognathic diseases medicine.anatomical_structure stomatognathic system Cheek teeth Genetics medicine Carnivora Animal Science and Zoology Malocclusion Ecology Evolution Behavior and Systematics Nature and Landscape Conservation |
| Zdroj: | Journal of Mammalogy. 65:111-117 |
| ISSN: | 0022-2372 1545-1542 |
| DOI: | 10.2307/1381207 |
| Popis: | Dental morphology of Felis rufus is highly specialized for prey-killing and meat-shearing functions, and only three cheek teeth occur in each jaw of the adult. Replacement mechanisms have evolved to allow functional maintenance through the lacteal-permanent transitional period. Permanent incisors erupt posterior to the lacteals and in a sequence preserving the nip function. Erupting permanent canines appear to one side of the lacteals, so that lacteal loss is gradual and permanent canines are functional prior to actual lacteal loss. Deciduous carnassials are formed by dP3/dP4 but permanent carnassials are formed by P4/M1 Permanent carnassials are erupted and functional prior to lacteal loss. Adult carnassials are more posteriorly located in the jaw than are lacteal carnassials, and provide greater shear force in adults due to proximity to the angle of the jaw. Dominant cusps of replacement teeth are drastically different from dominant cusps of lacteal counterparts, but positions of cusps and eruption sequence prevents malocclusion during transition. |
| Databáze: | OpenAIRE |
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