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Observations on the Tasmanian Devil, Sarcophilus harrisi (Dasyuridae: fvlarsupiala) at Granville Harbour, 1966-75

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Guiler, ER (1978) Observations on the Tasmanian Devil, Sarcophilus harrisi (Dasyuridae: fvlarsupiala) at Granville Harbour, 1966-75. Papers and Proceedings of the Royal Society of Tasmania, 112. pp. 161-188. ISSN 0080-4703

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Abstract

Movements of Tasmanian devils in a western Tasmanian locality, Granville Harbour,
were largely restricted to well defined trails and were related to actual or potential
food sources.
The sex ratio varied greatly from year to year wi th the average over 10 years
of 1:0.95. The percentage breeding success with females was only 58.9% with 2.67
pouch young/successful breeding female. Recruitment from this source into the adult
groups is small.
The population was dominated by large males for most of the period with the
recruitment of young, especially of males, being low in most years. Year groups survive
in the population for about 5 years. The population is maintained by immigration
plus occasional good juvenile recruitment. Young females have a lower mortality than
males, possibly resulting from less intraspecific interactions, but the older males
have low mortality and Ii ve about 1 year longer than females.
The population increased substantially in 1973 due to a high survival of earlier
year groups and a low mortality. The Granville devils appear to follow a different
population cycle from that of the rest of Tasmania, due to geographic isolation.

Item Type: Article
Keywords: Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title: Papers and Proceedings of the Royal Society of Tasmania
Page Range: pp. 161-188
ISSN: 0080-4703
Collections: Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:

Copyright Royal Society of Tasmania

Date Deposited: 28 May 2012 03:32
Last Modified: 18 Nov 2014 04:36
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