Integrating reproductive sciences into recovery programmes for declining and extinct marsupial populations

doi:10.1017/CBO9780511615016.018

14 - Integrating reproductive sciences into recovery programmes for declining and extinct marsupial populations

Published online by Cambridge University Press: 21 January 2010

Peter D. Temple-Smith

Edited by

John C. Rodger and

Peter D. Temple-Smith: Affiliation:
Department of Conservation and Research, Zoological Parks and Gardens Board and Department of Zoology, The University of Melbourne, Parkville, Victoria 3052, Australia.
William V. Holt: Affiliation:
Zoological Society of London
Amanda R. Pickard: Affiliation:
Zoological Society of London
John C. Rodger: Affiliation:
Marsupial CRC, New South Wales
David E. Wildt: Affiliation:
Smithsonian National Zoological Park, Washington DC

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INTRODUCTION AND OBJECTIVES

Marsupial evolution, diversity and extinction

Australia's marsupials appear to have evolved through colonisation by progenitor species from South America (Szalay, 1982; Temple-Smith, 1987; Rich, 1991). Land bridges connecting Australia, Antarctica and South America (c. 45 million years ago) enabled the filtered passage of species from South America across the Antarctic landmass to Australia. Subsequent evolution and radiation produced a distinct marsupial fauna that adapted to changing landscapes and habitats. Various palaeontological studies (Archer et al., 1989; Murray, 1991; Rich, 1991) have described an amazing diversity of marsupials, including a rhinoceros-sized diprotodontid, a large carnivorous marsupial ‘lion’ (Thylacoleo; distantly resembling a sabre-toothed cat), a tapir-like marsupial (Palorchestes sp.), various thylacine species, rainforest-based marsupial moles and gigantic wombats (Phascolonus and Ramsayia), wallabies (Protemnodon), kangaroos (Macropus titan) and a Tasmanian devil (Sarcophilis laniarius), all of which became extinct.

Arrival of humans on the Australian continent started a process of extinctions that was accelerated by the entry of Europeans into the fragile landscape. Habitat destruction, increased hunting and modern weapons combined with introductions of the fox, dog, rabbit, goat and cat caused a rapid loss of species, especially marsupials in the <8 kg weight range. By the mid-twentieth century, nine marsupial species had been exterminated. The 2000 IUCN Red List of Threatened Species records five Australian marsupials as ‘Critically Endangered’, 17 as ‘Endangered’ and 22 as ‘Vulnerable’.

Type: Chapter
Information: Reproductive Science and Integrated Conservation , pp. 211 - 231

DOI: https://doi.org/10.1017/CBO9780511615016.018 [Opens in a new window]

Publisher: Cambridge University Press

Print publication year: 2002

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