Anatomy and Embryology

, Volume 196, Issue 1, pp 39–46 | Cite as

Müllerian duct regression in a marsupial, the tammar wallaby

  • D. J. Whitworth
  • Geoffrey Shaw
  • M. B. Renfree
ORIGINAL ARTICLE

Abstract

 Müllerian duct regression is first apparent in male pouch young of the tammar wallaby (Macropus eugenii) 6–7 days after birth and, as in eutherian mammals, is characterised by a condensation of the periductal mesenchyme into a whorl around the ductal epithelial cells. A decrease in the density of the extracellular matrix was observed in the region of the whorl. In contrast to eutherian mammals no changes were observed in the mean outer diameter of the Müllerian duct during the early stages of regression. The time at which these mesenchymal changes occur corresponds to the period of Müllerian inhibiting substance secretion in the postnatal tammar testis.

Key words Paramesonephric duct Sexual differentiation Mesonephros 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • D. J. Whitworth
    • 1
  • Geoffrey Shaw
    • 1
  • M. B. Renfree
    • 1
  1. 1.Department of Zoology, University of Melbourne, Parkville, Victoria, 3052 Australia Tel.: +61 3 9344 6259; Fax: +61 3 9344 7909; e-mail: m.renfree@zoology.unimelb.edu.auAU

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