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The Organizer in Amphibians with Large Eggs: Problems and Perspectives

  • Eugenia M. del Pino
  • Richard P. Elinson
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Abstract

The amphibians are a diverse group that includes not only the frogs and toads (Anura), but also the newts and salamanders (Urodela), and the limbless and tailless amphibians (Gymnophiona). Development has been extensively investigated in the frog Xenopus laevis, but we have limited information for other amphibians, many of which have different reproductive modes (reviewed in Duellman and Trueb 1986). The study of the morphological variation and gene expression patterns among amphibians provides comparative data on early development. Such comparisons represent natural experiments that expand our understanding of development.

Keywords

Vegetal Pole Mesoderm Formation Early Gastrula Cleavage Cycle Midblastula Transition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Eugenia M. del Pino
    • 1
  • Richard P. Elinson
    • 2
  1. 1.Departamento de Ciencias BiológicasPontificia Universidad Católica del EcuadorQuitoEcuador
  2. 2.Department of Biological SciencesDuquesne UniversityPittsburghUSA

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