Interpopulation comparison of variations in gastrulation of Rana arvalis and Rana ridibunda occurring under the conditions of anthropogenic contamination of water bodies

Interpopulation comparison of variations in gastrulation of Rana arvalis and Rana ridibunda... The results of morphometric analysis of gastrulation in city populations of Rana arvalis and Rana ridibunda suggest that under the conditions of anthropogenic contamination of water bodies, the early development is more variable, if we compare less variable sizes of their eggs in the city and suburb populations. The variability of gastrulation appears to depend on the degree of contamination of spawning water bodies and is accompanied by increased correlation between the forming structures. This latter may be determined by two causes: (1) increased number of interdependent features, which leads to coordinated differentiation of structures and regulation of variability, and (2) increased coefficients of correlation within a small group of features, which leads to the formation of structures characteristic for the subsequent developmental stages, including the appearance of heterochronies. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Interpopulation comparison of variations in gastrulation of Rana arvalis and Rana ridibunda occurring under the conditions of anthropogenic contamination of water bodies

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Inc.
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360407040066
Publisher site
See Article on Publisher Site

Abstract

The results of morphometric analysis of gastrulation in city populations of Rana arvalis and Rana ridibunda suggest that under the conditions of anthropogenic contamination of water bodies, the early development is more variable, if we compare less variable sizes of their eggs in the city and suburb populations. The variability of gastrulation appears to depend on the degree of contamination of spawning water bodies and is accompanied by increased correlation between the forming structures. This latter may be determined by two causes: (1) increased number of interdependent features, which leads to coordinated differentiation of structures and regulation of variability, and (2) increased coefficients of correlation within a small group of features, which leads to the formation of structures characteristic for the subsequent developmental stages, including the appearance of heterochronies.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Aug 10, 2007

References

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