Are monotremes primitive and marsupials inferior?

Weisbecker, Vera (2015). Are monotremes primitive and marsupials inferior?. In Athol Klieve, Lindsay Hogan, Stephen Johnston and Peter Murray (Ed.), Marsupials and monotremes: nature's enigmatic mammals (pp. 397-411) New York, NY, United States: Nova Science.

Author Weisbecker, Vera
Title of chapter Are monotremes primitive and marsupials inferior?
Title of book Marsupials and monotremes: nature's enigmatic mammals
Place of Publication New York, NY, United States
Publisher Nova Science
Publication Year 2015
Sub-type Chapter in textbook
Open Access Status Not Open Access
Series Animal science, issues and research
ISBN 9781634829731
1634829735
Editor Athol Klieve
Lindsay Hogan
Stephen Johnston
Peter Murray
Chapter number 11
Start page 397
End page 411
Total pages 15
Total chapters 11
Language eng
Abstract/Summary This chapter deals with some of the many prejudices surrounding the value of marsupials and monotremes as research organisms. It shows that most published research on mammalian biology actually only deals with placentals, and explains the historical background to the lack of scientific interest in monotremes and marsupials. Montremes are a complex mosaic of derived, ancestral and convergent traits, defying the perception that monotremes are a "primitive" representative of an ancestral mammal. The section on marsupials discusses a series of specific claims made about the evolutionary accomplishment of marsupials; in particular, the efficiency of marsupial reproduction, metabolism and development, the impact of development of morphological evolution, and the ability of marsupials to compete for niche space with placentals. In all cases, intriguing differences between monotremes, marsupials, and placentals serve to highlight the broad spectrum of mammalian evolution, rather than indicate a succession of evolutionary stages with differing evolutionary "merit."
Keyword Basal metabolic rate
Developmental constraint
Invasive species
Oviparity
Q-Index Code B1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Book Chapter
Collections: Official 2016 Collection
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Created: Sat, 19 Dec 2015, 02:43:59 EST by Gail Walter on behalf of School of Biological Sciences