CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Australian Journal of Zoology   
Australian Journal of Zoology
Journal Banner
  Evolutionary, Molecular and Comparative Zoology
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Board
Contacts
Content
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Notice to Authors
Submit Article
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube

red arrow Supplementary Series
blank image
All volumes of the Australian Journal of Zoology Supplementary Series are online and available to subscribers of Australian Journal of Zoology.

 

Article << Previous     |     Next >>   Contents Vol 47(5)

Birth in the northern brown bandicoot, Isoodon macrourus (Marsupialia:Peramelidae)

Robert T. Gemmell, Colleen Veitch and John Nelson

Australian Journal of Zoology 47(5) 517 - 528
Published: 1999

Abstract

The ability of the newborn marsupial to move from the uterus to the pouch and locate the teat is still not fully understood. Birth has now been observed in a number of species of marsupial. However, filming this event, which occurs over a few minutes, allows for a greater understanding of the mechanisms involved. In this study, birth was filmed in 4 northern brown bandicoots, Isoodon macrourus. Before birth the bandicoot lay on one side with one hind leg facing upwards. The mother licked around the urogenital sinus, around the pouch and along the inside of the hind legs. There was no release of fluid just prior to birth of the first young, which appeared covered in membranes. The mother licked the young vigorously to remove the membranes. Young were born singularly or in groups of up to four young. Contrary to the situation in the red kangaroo the pathway of the newborn of the bandicoot was mainly downwards, with the newborn having to travel only about 1 cm to reach the pouch. The newborn of the bandicoot do not have a definite crawl to the pouch, as is seen in macropodids – they move with a snake-like wriggle down a moist 1-cm pathway between the urogenital sinus and the pouch. The mother bandicoot cleans the young, removing the membranes, and lies on one side then on the other, positioning the pouch so that the young nearly ‘fall’ into the pouch. As with the macropodids, the transfer from the urogenital sinus to the attachment to the teat in the pouch takes about 5 min. It is obvious that there are several marsupial ‘birth positions’, and several methods are used by marsupial species to allow the newborn to attach to the teat.



Full text doi:10.1071/ZO99024

© CSIRO 1999

blank image
Subscriber Login
Username:
Password:  

 
PDF (756 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2014