Abstract
We studied individual pathways of gastrulation in two related amphibian species making an emphasis on the developmental dynamics of normal variation in the geometry of gastrulation movements. Analyzing the variation dynamics, we show that the linear succession of developmental stages is a secondary phenomenon disguising self-oscillations that lie at the heart of the dorsal blastopore lip morphogenesis. Characteristic features of the equations derived to describe the oscillations are, first, their dependence only on the movement geometry and, second, including of the dynamics of spatial variance directly into the movement equations, making it clear that the reasons for variability of morphogenesis are the same that for morphogenesis itself. The equations describing morphogenetic oscillations are mathematically similar to those describing natural selection in that the system tends to minimize its variance, individual or within-individual one, but the spatially uniform state turns to be unstable. Comparing of the dynamics of natural developmental variation in gastrulation in two frog species shows that, depending on the mechanics and geometry mass cell movements, different types of gastrulation movements have different proportions...Continue Reading
References
Jul 1, 1976·Developmental Biology·R E Keller
Sep 1, 1982·Journal of Morphology·L M Van Valen
Aug 6, 1981·Nature·J GerhartM Kirschner
Jan 6, 2001·The Journal of Experimental Zoology·S A Newman, G B Müller
Jun 6, 2002·Proceedings of the National Academy of Sciences of the United States of America·Isaac Salazar-Ciudad, Jukka Jernvall
Jul 16, 2004·Nature·Johannes JaegerJohn Reinitz
Feb 16, 2006·The International Journal of Developmental Biology·Vladimir G Cherdantsev
Feb 16, 2006·The International Journal of Developmental Biology·Victoria A Scobeyeva
Feb 17, 2006·Nature Reviews. Molecular Cell Biology·Edward M De Robertis
Dec 11, 2007·Developmental Biology·Svetlana SurkovaJohn Reinitz
May 1, 1997·The American Naturalist·A P Møller
Jun 30, 2010·Ontogenez·V G Cherdantsev, O V Grigor'eva
May 23, 2012·Bio Systems·Lev V Beloussov
May 23, 2012·Bio Systems·Valeria V IsaevaEugene V Presnov
May 23, 2012·Bio Systems·Vladimir G Cherdantsev, Olga V Grigorieva
Citations
May 23, 2012·Bio Systems·Vladimir G Cherdantsev, Olga V Grigorieva
Apr 3, 2014·Bio Systems·Abir U Igamberdiev
Apr 29, 2014·Bio Systems·Vladimir G Cherdantsev
Jun 25, 2014·Bio Systems·Olga V Grigorieva, Vladimir G Cherdantsev