Radiology of Australian Mammals by Vogelnest Larry & Allan Graeme

Author:Vogelnest, Larry & Allan, Graeme
Language: eng
Format: epub
Publisher: CSIRO PUBLISHING
Published: 2015-06-14T16:00:00+00:00

Figure 8.22: Abdomen, lateral view: (a) common brush-tailed possum (Trichosurus vulpecula), (b) common ring-tailed possum (Pseudocheirus peregrinus), (c) squirrel glider (Petaurus norfolcensis), (d) greater glider (Petauroides volans). Intraluminal contents (gas and digesta) of the caecum and colon dominate the radiographic image, obscuring other abdominal organs.

Figure 8.23: Abdomen, ventrodorsal view: (a) common brush-tailed possum (Trichosurus vulpecula), (b) common ring-tailed possum (Pseudocheirus peregrinus), (c) squirrel glider (Petaurus norfolcensis), (d) greater glider (Petauroides volans). Intraluminal contents (gas and digesta) of the caecum and colon dominate the radiographic image, obscuring other abdominal organs. Note: a transponder can be seen in (b) and (c).

The anatomy of the female reproductive tract of possums and gliders is typical of most marsupials. There are two lateral vaginae and a median vagina with a temporary central canal through which the young are born. Sugar gliders have elongated lateral vaginae compared with other species of possums and gliders (McKay 1989; Johnson and Hemsley 2008). The anatomy of the male reproductive tract is similar to that of most marsupials. Testes are located in a pre-penile scrotum. Accessory sex glands consist of only a prostate and one or more pairs of bulbourethral (Cowper’s) glands (Temple-Smith 1984).

The pouch opens cranially, has 2–6 teats and may have an incomplete median septum in Petaurus spp. and the Leadbeater’s possum (Gymnobelideus leadbeateri) (McKay 1989; McKay and Winter 1989; Russell and Renfree 1989; Turner and McKay 1989). When lactating, the mammary gland may be large and can be seen on radiographs (Figs 8.24 and 8.25). If still present within the pouch, pouch young are clearly seen on radiographs (Fig. 8.25).

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