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Assessment and health status of macropod populations on Maria Island, June to July 2010


Knowles, G and Jackson, B and Ingram, J, Assessment and health status of macropod populations on Maria Island, June to July 2010, Wildlife Disease Association (Australasian Section) Annual Conference 2010, 13-17 December 2010, Dover, Tasmania (2010) [Conference Extract]

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A limited epidemiological study of the health status of three major introduced macropods (Forester kangaroos (Macropus giganteus), Bennett's wallabies (Macropus rufogriseus) and Tasmanian pademelons (Thylogale billaderii)) on Maria Island was made in June-July 2010. The aim was to detect the presence or absence of disease, in particular disease related to over stocking, within the macropod populations. 7-9 animals were necropsied from each species, biased towards those animals that appeared lethargic I ill-thrifty. Gross exam (including kidney fat index), histopathology of gross lesions, parasitology (faecal egg count, total worm counts), haematology, biochemistry, toxoplasma serology and faecal salmonella culture were completed. Key findings were low kidney fat index in all macropods, indicating low nutritional status, moderate parasitic burdens in wallabies (35651937 eggs per gram of faeces, mean SD n=6) and pademelons (3278 1085 eggs per gram faeces, mean SD n=6), anaemia in all macropods and hypoproteinaemia in wallabies. In addition, in all pademelons sampled there was peritonitis with intraperitoneal filarids (Brienlia thylogali). One wallaby had a diffuse subacute marked typhlitis with fibrinoid vasculitis and multifocal mild subacute necrotizing hepatitis. None of the animals sampled were shedding salmonella in faeces and none seroconverted to Toxoplasma gondii. This data, in conjunction with ecological data (including macropod population numbers, flora diversity I feed abundance), was used by Tasmanian Parks and Wildlife Service (P&WS) to make decisions for macropod population control.

Item Details

Item Type:Conference Extract
Keywords:macropod epidemiology disease necropsies parasitology peritonitis
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Terrestrial ecology
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:Ingram, J (Ms Janeane Ingram)
ID Code:118625
Year Published:2010
Deposited By:Geography and Spatial Science
Deposited On:2017-07-14
Last Modified:2017-07-14

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