| FONS, J.M., M. GAETE, O. ZAHRADNICEK, Marie ŠULCOVÁ, H. BANDALI, E.R. KHANNOON, J.M. RICHMAN, marcela BUCHTOVÁ and A.S. TUCKER. Getting out of an egg: Merging of tooth germs to create an egg tooth in the snake. Developmental dynamics. United States: Wiley-Liss, 2020, vol. 249, No 2, p. 199-208. ISSN 1058-8388. Available from: https://dx.doi.org/10.1002/dvdy.120. |
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@article{1647696,
author = {Fons, J.M. and Gaete, M. and Zahradnicek, O. and Šulcová, Marie and Bandali, H. and Khannoon, E.R. and Richman, J.M. and Buchtová, marcela and Tucker, A.S.},
article_location = {United States},
article_number = {2},
doi = {http://dx.doi.org/10.1002/dvdy.120},
keywords = {congrescence theory; dentition; egg tooth; fusion; snake},
language = {eng},
issn = {1058-8388},
journal = {Developmental dynamics},
title = {Getting out of an egg: Merging of tooth germs to create an egg tooth in the snake},
url = {https://doi.org/10.1002/dvdy.120},
volume = {249},
year = {2020}
}
TY - JOUR
ID - 1647696
AU - Fons, J.M. - Gaete, M. - Zahradnicek, O. - Šulcová, Marie - Bandali, H. - Khannoon, E.R. - Richman, J.M. - Buchtová, marcela - Tucker, A.S.
PY - 2020
TI - Getting out of an egg: Merging of tooth germs to create an egg tooth in the snake
JF - Developmental dynamics
VL - 249
IS - 2
SP - 199-208
EP - 199-208
PB - Wiley-Liss
SN - 10588388
KW - congrescence theory
KW - dentition
KW - egg tooth
KW - fusion
KW - snake
UR - https://doi.org/10.1002/dvdy.120
L2 - https://doi.org/10.1002/dvdy.120
N2 - Background The egg tooth is a vital structure allowing hatchlings to escape from the egg. In squamates (snakes and lizards), the egg tooth is a real tooth that develops within the oral cavity at the top of the upper jaw. Most squamates have a single large midline egg tooth at hatching, but a few families, such as Gekkonidae, have two egg teeth. In snakes the egg tooth is significantly larger than the rest of the dentition and is one of the first teeth to develop. Results We follow the development of the egg tooth in four snake species and show that the single egg tooth is formed by two tooth germs. These two tooth germs are united at the midline and grow together to produce a single tooth. In culture, this merging can be perturbed to give rise to separate smaller teeth, confirming the potential of the developing egg tooth to form two teeth. Conclusions Our data agrees with previous hypotheses that during evolution one potential mechanism to generate a large tooth is through congrescence of multiple tooth germs and suggests that the ancestors of snakes could have had two egg teeth.
ER -
FONS, J.M., M. GAETE, O. ZAHRADNICEK, Marie ŠULCOVÁ, H. BANDALI, E.R. KHANNOON, J.M. RICHMAN, marcela BUCHTOVÁ and A.S. TUCKER. Getting out of an egg: Merging of tooth germs to create an egg tooth in the snake. \textit{Developmental dynamics}. United States: Wiley-Liss, 2020, vol.~249, No~2, p.~199-208. ISSN~1058-8388. Available from: https://dx.doi.org/10.1002/dvdy.120.
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