Wilhelm Roux's archives of developmental biology

, Volume 193, Issue 5, pp 308–325

Early neurogenesis in wild-typeDrosophila melanogaster

  • Volker Hartenstein
  • Jose A. Campos-Ortega
Article

DOI: 10.1007/BF00848159

Cite this article as:
Hartenstein, V. & Campos-Ortega, J.A. Wilhelm Roux' Archiv (1984) 193: 308. doi:10.1007/BF00848159

Summary

This paper deals with morphological aspects of early neurogenesis inDrosophila, in particular with the segregation of neuroblasts from the neurogenic region of the ectoderm and the pattern formed by those wells within both the germ band and the procephalic lobe. The neurogenic ectoderm was found to contain neural precursors intermingled with epidermal precursors, extending from the midline up to the primordia of the tracheal tree along the germ band and laterodorsally in the procephalic lobe. Germ band neuroblasts segregate from the neurogenic ectoderm during a period of several hours according to characteristic spatial and temporal patterns. During the first half of the segregation process the pattern of germ band neuroblasts was found to be the same in different animals in both spatial arrangement and number of cells; this permitted the identification of individual neuroblasts from different embryos. Later in development several difficulties were encountered which precluded an exact description of the neuroblast pattern. The constitution of the neurogenic region is discussed in relation to the phenotype of mutants affecting neurogenesis.

Key words

Neurogenesis Pattern of neuroblasts Drosophila 

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Volker Hartenstein
    • 1
  • Jose A. Campos-Ortega
    • 1
  1. 1.Institut für Entwicklungsphysiologie der Universität zu KölnKöln 41Federal Republic of Germany

Personalised recommendations