A16-yr-old male koala (Phascolarctos cinereus) presented for nonspecific signs of illness and weight loss. Despite 2 mo of diagnostics and supportive care, the koala's health declined and euthanasia was elected. On histopathologic examination, lesions containing fungal organisms morphologically consistent with coccidioidomycosis were found in the lung, liver, spleen, kidney, lymph node, heart, eye, and bone marrow. Although disseminated infection was present, the koala was IgM and IgG seronegative for Coccidioides spp. 1 mo prior to euthanasia.
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http://dx.doi.org/10.1638/2011-0180.1 | DOI Listing |
Sci Rep
December 2024
University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia.
Wildlife diseases are major players in local and global extinctions. Effective disease surveillance, management and conservation strategies require accurate estimates of pathogen prevalence. Yet pathogen detection in wild animals remains challenging.
View Article and Find Full Text PDFMov Ecol
December 2024
Research School of Biology, The Australian National University, Canberra, ACT, 2601, Australia.
Background: Wildfires can have complex effects on wildlife populations. Understanding how post-fire conditions affect the movement ecology of threatened species can assist in better conservation and management, including informing the release of rescued and rehabilitated animals. The 2019-2020 megafires in Australia resulted in thousands of animals coming into care due to injury or concerns over habitat degradation.
View Article and Find Full Text PDFImmunogenetics
November 2024
School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, 2006, Australia.
The koala (Phascolarctos cinereus) is an iconic Australian species that is listed as endangered in the northern parts of its range due to loss of habitat, disease, and road deaths. Diseases contribute significantly to the decline of koala populations, primarily Chlamydia and koala retrovirus. The distribution of these diseases across the species' range, however, is not even.
View Article and Find Full Text PDFViruses
November 2024
Program in Molecular Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Infection by retroviruses and the mobilization of transposable elements cause DNA damage that can be catastrophic for a cell. If the cell survives, the mutations generated by retrotransposition may confer a selective advantage, although, more commonly, the effect of new integrants is neutral or detrimental. If retrotransposition occurs in gametes or in the early embryo, it introduces genetic modifications that can be transmitted to the progeny and may become fixed in the germline of that species.
View Article and Find Full Text PDFFolia Morphol (Warsz)
November 2024
Department of Anatomy, Tokyo Medical University, Tokyo, Japan.
Background: Marsupials have a narrower range of forelimb morphological features than placental mammals. It is hypothesized that this is due to a constraint in the reproductive biology of marsupials. The constraint is that newborn marsupials must crawl into their mother's pouch.
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