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dc.contributor.authorMurray, Kris A
dc.contributor.authorSkerratt, Lee F
dc.contributor.authorSpeare, Rick
dc.contributor.authorMcCallum, Hamish
dc.date.accessioned2017-05-03T15:37:46Z
dc.date.available2017-05-03T15:37:46Z
dc.date.issued2009
dc.date.modified2010-09-13T07:10:23Z
dc.identifier.issn0888-8892
dc.identifier.doi10.1111/j.1523-1739.2009.01211.x
dc.identifier.urihttp://hdl.handle.net/10072/33916
dc.description.abstractEstimating disease-associated mortality and transmission processes is difficult in free-ranging wildlife but important for understanding disease impacts and dynamics and for informing management decisions. In a capture-mark-recapture study, we used a PCR-based diagnostic test in combination with multistate models to provide the first estimates of disease-associated mortality and detection, infection, and recovery rates for frogs endemically infected with the chytrid fungus Batrachochytrium dendrobatidis (Bd), which causes the pandemic amphibian disease chytridiomycosis. We found that endemic chytridiomycosis was associated with a substantial reduction (approximately 38%) in apparent monthly survival of the threatened rainforest treefrog Litoria pearsoniana despite a long period of coexistence (approximately 30 years); detection rate was not influenced by disease status; improved recovery and reduced infection rates correlated with decreased prevalence, which occurred when temperatures increased; and incorporating changes in individuals' infection status through time with multistate models increased effect size and support (98.6% vs. 71% of total support) for the presence of disease-associated mortality when compared with a Cormack- Jolly-Seber model in which infection status was restricted to the time of first capture. Our results indicate that amphibian populations can face significant ongoing pressure from chytridiomycosis long after epidemics associated with initial Bd invasions subside, an important consideration for the long-term conservation of many amphibian species worldwide. Our findings also improve confidence in estimates of disease prevalence in wild amphibians and provide a general framework for estimating parameters in epidemiological models for chytridiomycosis, an important step toward better understanding and management of this disease.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley-Blackwell Publishing
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1242
dc.relation.ispartofpageto1252
dc.relation.ispartofissue5
dc.relation.ispartofjournalConservation Biology
dc.relation.ispartofvolume23
dc.rights.retentionY
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchConservation and biodiversity
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchPopulation ecology
dc.subject.fieldofresearchAgricultural, veterinary and food sciences
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode410401
dc.subject.fieldofresearchcode31
dc.subject.fieldofresearchcode310307
dc.subject.fieldofresearchcode30
dc.titleImpact and Dynamics of Disease in Species Threatened by the Amphibian Chytrid Fungus, Batrachochytrium dendrobatidis
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2009
gro.hasfulltextNo Full Text
gro.griffith.authorMcCallum, Hamish


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