Epizootiology of Chlamydia infections in two free-range koala populations

Jackson, M. T.; White, Neil; Giffard, Philip M.; Timms, Peter

doi:10.1016/s0378-1135(98)00302-2

Cited by 130 publications

(135 citation statements)

References 17 publications

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“…Chlamydia in koalas has long been associated with clinical disease, primarily ocular and urogenital pathology (Jackson et al, 1999). Our findings partially support this, but also suggest that these clinical signs are not pathognomonic of Chlamydia infection.…”

Section: Discussionsupporting

confidence: 79%

Identification of unusual Chlamydia pecorum genotypes in Victorian koalas (Phascolarctos cinereus) and clinical variables associated with infection

Legione

Patterson

Whiteley

et al. 2016

Journal of Medical Microbiology

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Section: Discussionsupporting

confidence: 79%

Identification of unusual Chlamydia pecorum genotypes in Victorian koalas (Phascolarctos cinereus) and clinical variables associated with infection

Legione

Patterson

Whiteley

et al. 2016

Journal of Medical Microbiology

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“…pneumoniae appears to be a primary human pathogen. Attempts to identify zoonotic reservoirs have been unsuccessful, although C. pneumoniae infection has been described in several nonhuman species including koalas [2]. The mode of transmission remains uncertain but is probably via infected respiratory secretions.…”

Section: Epidemiology Of Respiratory Infection Due Tomentioning

confidence: 99%

Chlamydia pneumoniae and the lung

Mr¹

2000

Eur Respir J

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Chlamydia pneumoniae and the lung. M.R. Hammerschlag. #ERS Journals Ltd 2000. ABSTRACT: Chlamydia pneumoniae is a frequently occurring respiratory pathogen affecting all age groups. It may cause 5±20% of community-acquired pneumonias in adults and children. The organism has also been implicated as an infectious trigger for asthma. Furthermore, new studies suggest that it may play a role in the pathogenesis of several chronic diseases including atherosclerosis.However, despite the growing significance of C. pneumoniae as a pathogen, progress is hampered by the lack of standardized diagnostic methods including serology and polymerase chain reaction. This makes it practically impossible for the practitioner to make a specific microbiological diagnosis. The lack of standardized methods has also had an adverse effect on treatment trials. The dependence on serology for diagnosis in treatment studies has generated some questionable results.Unless cultures are performed, microbiological efficacy cannot be assessed and it may never be possible to survey for or document the emergence of resistance.

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“…Moore and Foley 2000;Ellis et al 2002). Koala populations are currently under threat from the synergistic threats of habitat loss, disease, car collisions and dog predation in coastal regions of Queensland and New South Wales (Jackson et al 1999;Dique et al 2003;McAlpine et al 2006;Rhodes et al 2008;Lunney et al 2009). For example, the abundance of koalas on the Koala Coast of southeast Queensland is estimated to have declined by 64% in a ten year period (1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008) (State of Queensland 2009).…”

mentioning

confidence: 99%

Modelling the potential range of the koala at the Last Glacial Maximum: future conservation implications

Adams‐Hosking¹,

Moss²,

Rhodes³

et al. 2011

Australian Zoologist

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The koala Phascolarctos cinereus is the only member of the once diverse marsupial family Phascolarctidae to have survived the Last Glacial Maximum. A climate envelope model for P. cinereus was developed to predict the range for this species at present and at the Last Glacial Maximum. The model was compared to the contemporary koala records and the known fossil records of P. cinereus during the Quaternary. The predicted current core range for koalas was concentrated in southeast Queensland, eastern New South Wales and eastern Victoria. At the Last Glacial Maximum their predicted core range contracted significantly to southeast Queensland and northeast New South Wales. Our findings concord with other studies that find species experienced range contractions during glacial maxima. In the context of the future conservation planning for koalas in the wild, our historical perspective demonstrates the past adaptations of koalas to changes in climate and their probable range contraction to climatic refugia. The future survival of wide-ranging specialist species, such as the koala, may depend on identifying and protecting, future climatic refugia.Key words: Climate envelope, climatic refugia, core range, koala, Phascolarctos cinereus, Last Glacial Maximum. 984Adams-Hosking et al. Australian Zoologist volume 35 (4) 2011The role of humans as well as climate in determining the biogeography, evolution and extinction of faunas is an area of ongoing research, in particular the investigation of fauna-rich fossil caves to ascertain faunal responses to climate change during the Pleistocene (e.g. Hocknull 2007;Prideaux et al. 2007). These authors have revealed significant population fluctuations driven by glacialinterglacial cycling, but stable species composition for 500 thousand years, with the exception of the megafauna that went extinct around 70 -50 thousand years ago (Long et al. 2002). Research suggests that climate change alone was unlikely to have been the principal cause of the extinction of the megafauna and although Aboriginal hunting may have been a factor in determining the distribution and abundance of P. cinereus, there is no doubt that populations have been significantly affected by the European occupiers of Australia for the fur trade in more recent times (e.g. The modern koala's primary food source is a regionallyvariable selection of, primarily, Eucalyptus and Corymbia tree species (e.g. Moore and Foley 2000; Ellis et al. 2002). Koala populations are currently under threat from the synergistic threats of habitat loss, disease, car collisions and dog predation in coastal regions of Queensland and New South Wales (Jackson et al. 1999; Dique et al. 2003;McAlpine et al. 2006;Rhodes et al. 2008;Lunney et al. 2009). For example, the abundance of koalas on the Koala Coast of southeast Queensland is estimated to have declined by 64% in a ten year period (1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008) (State of Queensland 2009). In western semi-arid and arid regions, koalas have been shown to exp...

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Epizootiology of Chlamydia infections in two free-range koala populations

Cited by 130 publications

References 17 publications

Identification of unusual Chlamydia pecorum genotypes in Victorian koalas (Phascolarctos cinereus) and clinical variables associated with infection

Identification of unusual Chlamydia pecorum genotypes in Victorian koalas (Phascolarctos cinereus) and clinical variables associated with infection

Chlamydia pneumoniae and the lung

Modelling the potential range of the koala at the Last Glacial Maximum: future conservation implications

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