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On a Model Mechanism for the Spatial Patterning of Teeth Primordia in the Alligator

✍ Scribed by P.M. Kulesa; G.C. Cruywagen; S.R. Lubkin; P.K. Main; J. Sneyd; M.W.J. Ferguson; J.D. Murray

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
484 KB
Volume
180
Category
Article
ISSN
0022-5193

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✦ Synopsis

We propose a model mechanism for the initiation and spatial positioning of teeth primordia in the alligator, Alligator mississippiensis. Detailed embryological studies by Westergaard & Ferguson (1986, 1987, 1990) show that jaw growth plays a crucial role in the developmental patterning of the tooth initiation process. Based on biological data we develop a reaction-diffusion mechanism, which crucially includes domain growth. The model can reproduce the spatial pattern development of the first seven teeth primordia in the lower half jaw of A. mississippiensis. The results for the precise spatio-temporal sequence compare well with detailed developmental experiments.

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