Food regurgitation in Bennett's Wallaby, Protemnodon rufogrisea (Demarest), and the Scrub Wallaby, Thylogale billardieri (Demarest)
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چکیده
منابع مشابه
Fatigue rupture of wallaby tail tendons.
Wallaby tail tendons fail after repeated application of stresses much lower than would be needed to break them in a single pull. We show that this a fatigue phenomenon, distinct from the creep rupture that occurs after prolonged application of a constant stress. The two phenomena are disctinguished by experiments in which tensile stress is cycled at different frequencies, ranging from 1 to 50 Hz.
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The tail tendons from wallabies (Macropus rufogriseus) suffer creep rupture at stresses of 10 MPa or above, whereas their yield stress in a dynamic test is about 144 MPa. At stresses between 20 and 80 MPa, the time-to-rupture decreases exponentially with stress, but at 10 MPa, the lifetime is well above this exponential. For comparison, the stress on a wallaby tail tendon, when its muscle contr...
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Dama wallabies (Macropus eugenii) are considered significant pests in the Bay of Plenty. FeraCol, a possum control product, was tested for palatability and efficacy on eight penned male dama wallabies. FeraCol had very low palatability to captive wallabies. Only one wallaby ate a lethal dose, and it died 4 days later. FeraCol, in its present form, would be unsuitable for controlling dama wallab...
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We investigated whether the mechanical properties of the respiratory system represent a major constraint to spontaneous breathing in the newborn tammar wallaby Macropus eugenii, which is born after a very short gestation (approximately 28 days, birth mass approximately 380 mg). The rate of oxygen consumption (V(O(2))) through the skin was approximately 33 % of the total V(O(2)) at day 1 and app...
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ژورنال
عنوان ژورنال: CSIRO Wildlife Research
سال: 1960
ISSN: 0007-9103
DOI: 10.1071/cwr9600087