Stages of embryonic development of the zebrafish

Stages of embryonic development of the zebrafish We describe a series of stages for development of the embryo of the zebrafish, Danio (Brachydanio) rerio. We define seven broad periods of embryogenesis—the zygote, cleavage, blastula, gastrula, segmentation, pharyngula, and hatching periods. These divisions highlight the changing spectrum of major developmental processes that occur during the first 3 days after fertilization, and we review some of what is known about morphogenesis and other significant events that occur during each of the periods. Stages subdivide the periods. Stages are named, not numbered as in most other series, providing for flexibility and continued evolution of the staging series as we learn more about development in this species. The stages, and their names, are based on morphological features, generally readily identified by examination of the live embryo with the dissecting stereomicroscope. The descriptions also fully utilize the optical transparancy of the live embryo, which provides for visibility of even very deep structures when the embryo is examined with the compound microscope and Nomarski interference contrast illumination. Photomicrographs and composite camera lucida line drawings characterize the stages pictorially. Other figures chart the development of distinctive characters used as staging aid signposts. ©1995 Wiley‐Liss, Inc. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Developmental Dynamics Wiley

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Publisher
Wiley
Copyright
Copyright © 1995 Wiley‐Liss, Inc.
ISSN
1058-8388
eISSN
1097-0177
DOI
10.1002/aja.1002030302
Publisher site
See Article on Publisher Site

Abstract

We describe a series of stages for development of the embryo of the zebrafish, Danio (Brachydanio) rerio. We define seven broad periods of embryogenesis—the zygote, cleavage, blastula, gastrula, segmentation, pharyngula, and hatching periods. These divisions highlight the changing spectrum of major developmental processes that occur during the first 3 days after fertilization, and we review some of what is known about morphogenesis and other significant events that occur during each of the periods. Stages subdivide the periods. Stages are named, not numbered as in most other series, providing for flexibility and continued evolution of the staging series as we learn more about development in this species. The stages, and their names, are based on morphological features, generally readily identified by examination of the live embryo with the dissecting stereomicroscope. The descriptions also fully utilize the optical transparancy of the live embryo, which provides for visibility of even very deep structures when the embryo is examined with the compound microscope and Nomarski interference contrast illumination. Photomicrographs and composite camera lucida line drawings characterize the stages pictorially. Other figures chart the development of distinctive characters used as staging aid signposts. ©1995 Wiley‐Liss, Inc.

Journal

Developmental DynamicsWiley

Published: Jul 1, 1995

References

  • Electrical coupling between embryonic cells by way of extracellular space and specialized junctions
    Bennett, Bennett; Trinkaus, Trinkaus
  • Patterning the brain of the zebrafish embryo
    Kimmel, Kimmel
  • Segregation and early dispersal of neural crest cells in the embryonic zebrafish
    Raible, Raible; Wood, Wood; Hodsdon, Hodsdon; Henion, Henion; Weston, Weston; Eisen, Eisen

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