Coordination of bilateral tooth replacement in the juvenile gecko is continuous with in ovo patterning.

Evolution & Development
Theresa M Grieco, Joy Richman

Abstract

We performed a test of how function impacts a genetically programmed process that continues into postnatal life. Using the dentition of the polyphyodont gecko as our model, tooth shedding was recorded longitudinally across the jaw. We compared two time periods: one in which teeth were patterned symmetrically in ovo and a later period when teeth were initiated post-hatching. By pairing shedding events on the right and left sides, we found the patterns of tooth loss are symmetrical and stable between periods, with only subtle deviations. Contralateral tooth positions shed within 3-4 days of each other in most animals (7/10). A minority of animals (3/10) had systematic tooth position shifts between right and left sides, likely due to changes in functional tooth number. Our results suggest that in addition to reproducible organogenesis of individual teeth, there is also a neotenic retention of jaw-wide dental patterning in reptiles. Finer analysis of regional asymmetries revealed changes to which contralateral position shed first, affecting up to one quarter of the jaw (10 tooth positions). Once established, these patterns were retained longitudinally. Taken together, the data support regional and global mechanisms of coordinating ...Continue Reading

References

Jan 24, 1970·Nature·J W Osborn
Jan 1, 1995·Connective Tissue Research·P T Sharpe
Oct 18, 2001·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·D W Stock
Mar 5, 2003·Archives of Oral Biology·Martyn T Cobourne, Paul T Sharpe
Mar 14, 2003·Journal of Morphology·Sidney DelgadoJean-Yves Sire
Jul 15, 2003·The American Naturalist·James R Kellner, Ross A Alford
May 1, 1962·Journal of Dental Research·A M GRON
Oct 8, 2004·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Lokesh SuriHeleni Vastardis
Oct 14, 2005·Biological Reviews of the Cambridge Philosophical Society·Douglas S Glazier
Feb 21, 2006·Current Biology : CB·Matthew P HarrisJohn F Fallon
Nov 27, 2007·Journal of Dental Research·T E HughesG C Townsend
May 6, 2008·Developmental Biology·Marcela BuchtováJoy M Richman
Aug 24, 2010·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·Gareth J FraserJ Todd Streelman
Oct 5, 2010·Australian Dental Journal·S WoodroffeG Townsend
Dec 15, 2010·Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies·Michelle R BockmannGrant C Townsend
May 15, 2013·Proceedings of the National Academy of Sciences of the United States of America·Ping WuCheng-Ming Chuong
Jan 11, 2014·Seminars in Cell & Developmental Biology·Abigail S Tucker, Gareth J Fraser
Feb 14, 2015·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Alexis J LainoffLeslea J Hlusko
Nov 22, 2015·Current Topics in Developmental Biology·Anamaria Balic, Irma Thesleff
Dec 31, 2015·Royal Society Open Science·Judyth SassoonRyan Marek
Feb 1, 1999·Evolution; International Journal of Organic Evolution·Joseph L Tomkins
Nov 1, 1993·Journal of Morphology·J A KieserM Marion
Dec 1, 1985·Journal of Morphology·L W Kline, D R Cullum

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Citations

Sep 26, 2020·Integrative and Comparative Biology·Kirstin S BrinkJoy M Richman
May 21, 2021·Frontiers in Physiology·Kirstin S BrinkJoy M Richman

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