Ecological Archives E091-108-D1

Kris Murray, Richard Retallick, Keith R. McDonald, Diana Mendez, Ken Aplin, Peter Kirkpatrick, Lee Berger, David Hunter, Harry B. Hines, R. Campbell, Matthew Pauza, Michael Driessen, Richard Speare, Stephen J. Richards, Michael Mahony, Alastair Freeman, Andrea D. Phillott, Jean-Marc Hero, Kerry Kriger, Don Driscoll, Adam Felton, Robert Puschendorf, and Lee F. Skerratt. 2010. The distribution and host range of the pandemic disease chytridiomycosis in Australia, spanning surveys from 1956–2007. Ecology 91:1557.


INTRODUCTION

Emerging infectious diseases can have negative consequences for wildlife populations, ecosystems and biodiversity (Altizer et al. 2003, Crowl et al. 2008). Their incidence appears to be rising as a result of anthropogenic influences that favor the growth, dispersal and transmission of pathogens (Daszak et al. 2000, Jones et al. 2008, Smith et al. 2009). Establishing the current extent of diseases in free-ranging wildlife is therefore critical in order to plan, prioritize and implement management actions. Furthermore, the distributions of diseases are expected to be dynamic under various models of climate change (Lafferty 2009). Establishing an organism’s range under current climatic conditions will therefore be central to not only predicting range shifts under climate change but also for validating those predictions in the future.

Chytridiomycosis is the most serious wildlife disease impacting vertebrate biodiversity on record (Skerratt et al. 2007). Since its discovery in the 1990s (Berger et al. 1998, Longcore et al. 1999), it has been strongly implicated in global amphibian declines and extinctions (Stuart et al. 2004, Schloegel et al. 2006, Skerratt et al. 2007, Bielby et al. 2008, Wake and Vredenburg 2008). The long-term ecological consequences of endemic chytridiomycosis is relatively poorly studied, although significant ongoing mortality even decades after epidemic invasion has been reported in Australia (Murray et al. 2009) and evidence of other ecological impacts is emerging (e.g., Parris and Cornelius 2004, Whiles et al. 2006, Bosch and Rincon 2008, Connelly et al. 2008).

There is increasing support and general acceptance among governments, wildlife managers and scientists that Batrachochytrium dendrobatidis, the fungal pathogen causing chytridiomycosis, has spread into naïve amphibian populations (Morehouse et al. 2003, Weldon et al. 2004, Rachowicz et al. 2005, Fisher and Garner 2007). B. dendrobatidis (hereafter Bd) appears to have undergone recent global expansion via trade routes after the outbreak of a single clonal lineage, the origin of which remains uncertain (Morehouse et al. 2003, Weldon et al. 2004, Rachowicz et al. 2005, Fisher and Garner 2007, James et al. 2009). The World Organization for Animal Health recently recognized chytridiomycosis as an international notifiable disease in order to contain its spread, obligating member countries to report and control the spread of B. dendrobatidis (World Organisation for Animal Health 2008). Batrachochytrium dendrobatidis is currently known from several hundred amphibian species and from all continents where amphibians occur (Speare and Berger 2000, Kusrini et al. 2008, Olson and Ronnenberg 2008). Many more species are likely to be suitable hosts and we anticipate that this number will rise markedly as search effort and reporting increases.

In Australia, the earliest record of B. dendrobatidis is from a museum frog specimen collected in southeast Queensland near Brisbane in 1978 (Department of the Environment and Heritage 2006a), which coincides with sudden frog declines in a number of species and two species extinctions in that region (Berger et al. 1998, Hines et al. 1999). Subsequent amphibian declines and extinctions in central coastal Queensland (1985–1986) and the Wet Tropics (1990–1995) suggest that B. dendrobatidis spread to its current northern limit at Big Tableland near Cooktown (Laurance et al. 1996, Berger et al. 1999; Skerratt et al., in review). In southern Australia, the spread of B. dendrobatidis is poorly documented but its distribution extends down the entire east coast to Tasmania (first detected in 2004) (Pauza and Driessen 2008). Two separate foci occur in other states, one in southwest Western Australia (earliest record in archived samples from 1985) and another around Adelaide in South Australia (first detected in 1995) (Berger et al. 2004) (Fig. 1). The Northern Territory is currently considered amphibian chytrid free (Skerratt et al. 2008). Sixty three (29%) of Australia’s 223 endemic frogs have been recorded with infections of B. dendrobatidis.

Chytridiomycosis is now considered endemic in Queensland, New South Wales, Australian Capital Territory, Victoria, Tasmania and Western Australia. In the years after its arrival it is readily detected in populations. Little is known about B. dendrobatidis in South Australia.  Much of the continent is considered too hot and/or dry to sustain B. dendrobatidis (Murray et al., in review). It has principally been found in wild amphibian populations on the east coast of Queensland and New South Wales on or between the Great Dividing Range and the coast, in the Australian Capital Territory, Victoria, Tasmania and in southwest Western Australia (Fig. 1). Table 1 presents a full list (with first reference if available) of known infected species in Australia following the compilation of the data presented herein (note that not all data from these references could be obtained for inclusion in the database).

The current data represents the compilation of all available/accessible data on the occurrence of B. dendrobatidis in Australia as of 2008. The work is the product of a decade of research from a plethora of contributors. This is the first comprehensive, continent-wide database on the occurrence of B. dendrobatidis to be made publicly available to date. We envisage that the database be updatable and used in a global context for predictive modeling (e.g., of distribution and climatic interactions), meta-analyses, and risk assessment (e.g., of infection and impacts on species). This will improve current and future management of this devastating, globally emerging infectious disease.

TABLE 1. Australian amphibian species recorded as being infected with Batrachochytrium dendrobatidis in Australia (N = 63). With the exception of the unique listing of Litoria barringtonensis, taxonomy follows Amphibian Species of the World, which integrates the results of the most recent taxonomic literature (http://research.amnh.org/herpetology/amphibia/).

Family

Genus

Species

First reference

Bufonidae

Rhinella

marina (introduced; formerly Bufo marinus)

Berger et al. (1998)

Hylidae

Litoria

adelaidensis

Aplin and Kirkpatrick (2000)

Hylidae

Litoria

aurea

Berger (2001)

Hylidae

Litoria

barringtonensis

Berger (2001)

Hylidae

Litoria

booroolongensis

Hunter unpub. data

Hylidae

Litoria

burrowsi

Obendorf and Nelson (2004)

Hylidae

Litoria

caerulea

Berger et al. (1998)

Hylidae

Litoria

chloris

Berger et al. (1999)

Hylidae

Litoria

citropa

Mahony (2000)

Hylidae

Litoria

dayi (formerly Nyctimystes)

Berger et al. (1999)

Hylidae

Litoria

ewingii

Berger et al. (1999)

Hylidae

Litoria

fallax

Kriger and Hero (2007)

Hylidae

Litoria

genimaculata

Berger et al. (1999)

Hylidae

Litoria

gracilenta

Berger and Speare (2004)

Hylidae

Litoria

infrafrenata

Berger et al. (1999)

Hylidae

Litoria

jungguy

Berger (2001)

Hylidae

Litoria

latopalmata

Kriger and Hero (2007)

Hylidae

Litoria

lesueurii

Berger et al. (1998)

Hylidae

Litoria

lorica

Puschendorf et al. (2009)

Hylidae

Litoria

moorei

Aplin and Kirkpatrick (2000)

Hylidae

Litoria

nannotis

Berger et al. (1998)

Hylidae

Litoria

nasuta

Donovan et al. (1999)

Hylidae

Litoria

pearsoniana

Berger et al. (1999)

Hylidae

Litoria

peronii

Berger (2001)

Hylidae

Litoria

phyllochroa

Mahony (2000)

Hylidae

Litoria

raniformis

Norman and Waldman (2000)

Hylidae

Litoria

rheocola

Berger (2001)

Hylidae

Litoria

spenceri

Berger et al. (1998)

Hylidae

Litoria

tyleri

Berger (2001)

Hylidae

Litoria

verreauxii

Berger (2001)

Hylidae

Litoria

wilcoxii

Berger (2001)

Hylidae

Litoria

xanthomera

Phillott and McDonald unpub. data

Limnodynastidae

Adelotus

brevis

Speare and Berger (2004)

Limnodynastidae

Heleioporus

australiacus

Berger (2001)

Limnodynastidae

Heleioporus

barycragus

Speare website

Limnodynastidae

Heleioporus

eyrei

Aplin and Kirkpatrick (2000)

Limnodynastidae

Lechriodus

fletcheri

Berger (2001)

Limnodynastidae

Limnodynastes

dorsalis

Aplin and Kirkpatrick (2000)

Limnodynastidae

Limnodynastes

dumerilii

Berger et al. (1998)

Limnodynastidae

Limnodynastes

peronii

Berger (2001)

Limnodynastidae

Limnodynastes

tasmaniensis

Berger et al. (1998)

Limnodynastidae

Limnodynastes

terraereginae

Berger (2001)

Limnodynastidae

Neobatrachus

kunapalari

Berger (2001)

Limnodynastidae

Neobatrachus

pelobatoides

Speare website

Microhylidae

Cophixalus

ornatus

Kriger (2006)*

Myobatrachidae

Assa

darlingtoni

Kriger and Hero (2007)*

Myobatrachidae

Crinia

georgiana

Aplin and Kirkpatrick (2000)

Myobatrachidae

Crinia

glauerti

Aplin and Kirkpatrick (2000)

Myobatrachidae

Crinia

insignifera

Aplin and Kirkpatrick (2000)

Myobatrachidae

Crinia

pseudinsignifera

Aplin and Kirkpatrick (2000)

Myobatrachidae

Crinia

subinsignifera

Aplin and Kirkpatrick (2000)

Myobatrachidae

Crinia

tasmaniensis

Pauza and Driessen (2008)

Myobatrachidae

Geocrinia

rosea

Aplin and Kirkpatrick (2000)

Myobatrachidae

Geocrinia

vitellina

Aplin and Kirkpatrick (2000)

Myobatrachidae

Mixophyes

fasciolatus

Berger et al. (1998)

Myobatrachidae

Mixophyes

fleayi

Berger et al. (1998)

Myobatrachidae

Mixophyes

iteratus

Mahony (2000)

Myobatrachidae

Pseudophryne

corroboree

Speare and Berger (2004)

Myobatrachidae

Pseudophryne

pengilleyi

Berger et al. (2004)

Myobatrachidae

Taudactylus

acutirostris

Berger et al. (1998)

Myobatrachidae

Taudactylus

eungellensis

Retallick et al. (2004)

Myobatrachidae

Uperoleia

fusca

Kriger and Hero (2007)

Myobatrachidae

Uperoleia

laevigata

Berger (2001)

*Positive by qPCR from a single individual only.


 

Fig1
 
   FIG. 1. Geographic distribution of the 821 sites (n = 10183 specimen records) represented in this data set, indicating a site level disease status. The year of the earliest record in the database for each region is shown (in the absence of further archival analyses, this should not be inferred as the date of arrival of Batrachochytrium dendrobatidis in each zone. See introductory text for more details). For plotting, positive sites are drawn over negative sites. State and Territory abbreviations: SA = South Australia, WA = Western Australia, NT= Northern Territory, QLD = Queensland, NSW = New South Wales, VIC = Victoria, TAS = Tasmania.

 

 

METADATA

CLASS I. DATA SET DESCRIPTORS

A. Data set identity: The distribution and host range of the invasive disease chytridiomycosis in Australia 1956–2007.

B. Data set identification code: Chytridiomycosis_data_1956_2007.txt

C. Data set description

Principal Investigators:

Lee. F. Skerratt, Amphibian Disease Ecology Group, School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, Queensland 4811, Australia.

L. Berger, Amphibian Disease Ecology Group, School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, Queensland 4811, Australia.

R. Speare, Amphibian Disease Ecology Group, School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, Queensland 4811, Australia.

K. A. Murray, The Ecology Centre, School of Biological Science, University of Queensland, St Lucia, Queensland 4072, Australia

R. Retallick, GHD Pty Ltd, 8/180 Lonsdale Street, Melbourne, Victoria 3000, Australia

Abstract

Chytridiomycosis is the worst disease to affect vertebrate biodiversity on record. In Australia, it is thought to have caused the extinction of four frog species, and it threatens the survival of at least 10 more. We report the current distribution and host range of this invasive disease in Australia, which is essential knowledge for conservation management. We envisage that the data be used in a global and national context for predictive modeling, meta-analyses, and risk assessment. Our continent-wide data set comprises 821 sites in Australia and includes 10183 records from more than 80 contributors spanning collection dates from 1956 to 2007. Sick and dead frogs from the field and apparently healthy frogs from museum collections were tested opportunistically for the presence of Batrachochytrium dendrobatidis, the fungal pathogen causing chytridiomycosis, and apparently healthy frogs and tadpoles found during surveys were tested purposively. The diagnostic tests used were histology of skin samples and quantitative PCR of skin swabs. Chytridiomycosis was found in all Australian states and the Australian Capital Territory, but not in the Northern Territory. It appears to be currently confined to the relatively cool and wet areas of Australia, such as along the Great Dividing Range and adjacent coastal areas in the eastern mainland states of Queensland, New South Wales, and Victoria, eastern and central Tasmania, southern South Australia, and southwestern Western Australia. Batrachochytrium dendrobatidis may have been introduced into Australia via the port of Brisbane around 1978 and spread northward and southward. It did not appear to arrive in Western Australia until 1985. The earliest records from South Australia and Tasmania are from 1995 and 2004, respectively, although archival studies from these states are lacking. We also report negative findings showing that the disease does not currently occur in some areas that appear to be environmentally suitable, including Cape York Peninsula in Queensland and most of the World Heritage Area in western Tasmania. Infection with B. dendrobatidis has been recorded from 63 frog species in Australia to date, all belonging to the Hylidae, Limnodynastidae, and Myobatrachidae, with the exception of one individual of a species from the Microhylidae and the introduced cane toad of the family Bufonidae.

Key words: amphibian chytrid fungus; Batrachochytrium dendrobatidis; conservation; chytridiomycosis; distribution; extinction; frog; infectious disease; mapping; risk assessment.

CLASS II. RESEARCH ORIGIN DESCRIPTORS

A. Overall project description

Identity: The distribution and host range of the emerging infectious disease chytridiomycosis in Australia spanning surveys from 1956 to 2007

Originators:

L. Berger, Amphibian Disease Ecology Group, School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, Queensland 4811, Australia.

R. Speare, Amphibian Disease Ecology Group, School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, Queensland 4811, Australia.

R. Retallick, GHD Pty Ltd, 8/180 Lonsdale Street, Melbourne, Victoria 3000, Australia.

Period of Study: 1996 – 2009 (ongoing).

Objectives: To establish the distribution of amphibian chytridiomycosis in Australia under current climatic conditions.

Abstract: Same as above.

Sources of funding: Study specific – see references.

B. Specific subproject description

Site description: The data set comprises 821 unique sites in Australia that differ extensively in their environmental characteristics. Most sites occurred in Queensland (N  = 3 59), Western Australia (N = 225), Tasmania (N = 122) and New South Wales (N = 79).

Site type: N/A

Geography: Australia: north bounding latitude -9°; south bounding latitude -44°; west bounding longitude 112°; east bounding longitude 154°. Primary land masses are mainland Australia and the island of Tasmania. Completely surrounded by the Indian and Pacific Oceans and a number of seas and straits. Numerous smaller islands distributed around coastlines and in seas and straits. The Australian continent is 7692024 km2 in area. Highest elevation is 2228 m above sea level (asl) (Mt Kosciusko) (excluding offshore islands). 87% of the continent lies below 500 m asl.

Habitat: Sites represent a diverse range of habitat types across Australia, from tropical rainforest to arid and semi-arid lands.

Geology: Various.

Watersheds/hydrology: N/A.

Site history: N/A

Climate: Being a large island continent, Australia has a diverse range of climates from high rainfall, tropical regions in the north, arid, and semi-arid regions in the interior and temperate regions in the south. Study sites were distributed across all climate zones.

Experimental design: Opportunistic collection of sick and dead amphibians (including apparently healthy museum collections). Details of opportunistic collection can be found in (Berger et al. 1998, Berger 2001, Berger et al. 2004, Department of the Environment and Heritage 2006a).

Systematic sampling of healthy amphibians (including frogs and tadpoles). Systematic sampling occurred using a number of methodologies but was characterized by replicated sampling of apparently healthy frogs and tadpoles at study sites. Examples of the methodologies typically used for systematic sampling can be found in the references (e.g., Aplin and Kirkpatrick 2000, Retallick et al. 2004, McDonald et al. 2005, Department of the Environment and Heritage 2006a, Kriger and Hero 2007a, Kriger et al. 2007, Kriger and Hero 2008, Pauza and Driessen 2008, Skerratt et al. 2008) and in Skerratt et al. (in review).

Design characteristics: N/A.

Sampling methods: The diagnostic tests used were histology of skin samples and quantitative PCR of skin swabs, which have estimated sensitivities of approximately 27% and 73%, respectively (Skerratt et al., in preparation). Their specificities may be less than 100%. The accuracy of the tests depends on the methodology used in the diagnostic laboratory, which varied during the study. Therefore, single positive records from a location or species must be interpreted with caution. Similarly, establishing freedom from disease in a location or species should include taking the sensitivity of the diagnostic test into account (see Skerratt et al. 2008). Details of histological sampling method can be found in Berger et al. (2000, 2002). Details of the PCR sampling method can be found in Hyatt et al. (2007).

Taxonomy and systematics: Batrachochytrium dendrobatidis Longcore et al. (1999).

Permit history: Details of the ethics and collection permits for sick and dying frogs and for the systematic sampling of apparently healthy wild-caught amphibians were study specific and can be found within the references provided.

Legal/organizational requirements: None.

Project personnel: The authors.

CLASS III. DATA SET STATUS AND ACCESSIBILITY

A. Status

Latest update: The data represent specimen records spanning collection dates from 1956–2007. Data collection is ongoing and the database will be updated as collected and verified.

            Latest Archive date: 31 August 2009.

            Metadata status: The metadata are complete and up to date.

Data verification: Entries in the database were checked for outliers. Suspicious entries were then re-checked by referral to the relevant original contributors, who are the repositories of original hand-written data. We provide a column describing the geographic accuracy of the records as required for the study of Murray et al. (2009). Acceptable accuracy was ascribed to records for which detailed geographic coordinates were supplied by the contributors or they could otherwise be determined. Unacceptable accuracy was ascribed to records of low precision or those missing spatial reference information. A known volume of data is missing from the database for accessibility or copyright reasons; in some cases this may impact interpretation of the data. Please contact the authors prior to use for advice on interpretation. In addition to the missing data, some of the data provided is copyrighted to Australian Governments; however, permission to use these data is given in good faith that the data will be interpreted correctly. It is strongly suggested that data users contact the corresponding author for advice on intended use.

B. Accessibility

Storage location and medium: (Ecological Society of America data archives [http://esapubs.org/archive/default.htm], URL published in each issue of its journals). Original data are in the possession of individual contributors. Compiled data files are stored on the authors’ computers and backup external hard-drives.

Contact person: Lee Skerratt, email: lee.skerratt@jcu.edu.au. Ph (W) +61 7 4781 6065. Fax +61 7 4781 5254. Amphibian Disease Ecology Group, School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, Queensland 4811, Australia.

Copyright restrictions: Some of the data provided is copyrighted to Australian Governments; however, permission to use these data is given in good faith that the data will be interpreted correctly. It is strongly suggested that data users contact the corresponding author for advice on intended use.

Proprietary restrictions: None.

Costs: None.

CLASS IV. DATA STRUCTURAL DESCRIPTORS

A. Data Set File

            Identity: Chytridiomycosis_data_1956_2007.txt

            Size: 10183 records, not including header row.

            Format and storage mode: ASCII text, comma delimited. No compression scheme was used.

            Header information: See variable names in Section B.

            Alphanumeric attributes: Mixed.

            Special characters/fields: N/A

Authentication procedures: Sums of the numeric columns are used for cross-checking successful downloads of data file. Database_ID = 51851836, Year = 13993141, Individuals = -3276733, Indivs_positive = -2657784, Latitude = -13265526.922, Longitude = -11795571.290.

B. Variable information (summarized in Table 2 below):

Compiled_by: Gives the name of the person responsible for compilation of the data into the database.

Database_ID: Unique numeric identifier for each row entry.

Species: Gives the species of the specimen that was examined, if available.

Sex: Gives the sex of the specimen examined, if available.

Site: Gives the name or description of the site at which the specimen was collected, if available.

State: Gives the state or territory in which the specimen was collected, if available.

Country: Gives the country in which the specimen was collected.

Year: Gives the year the specimen was collected, if available. *Note – original dates were pooled to years given considerable uncertainty and inconsistency in formats used at data collection. Future collections should provide a standard DD/MM/YYYY format, or otherwise explicitly state the month in words (i.e., not MM/DD/YYYY).

Diagnostic: Gives the diagnostic method used on the specimen for the detection of B. dendrobatidis, if available. *Note future collections should attempt to include diagnostic test accuracy to improve result interpretation.

Individuals: Gives the number of individuals examined for each record, if available.

Indivs_positive: Gives the number of individuals testing positive for infection with B. dendrobatidis from the #individuals examined, if available.

Collector_source: Gives the person/party responsible for the collection and/or submission of the specimen for diagnostic testing, if available.

Orig_database: Gives the name of the original database/contact person from which the record was compiled, if available.

Disease_status: Gives the disease status of the record as per the results of diagnostic testing, if available.

Accuracy: Gives assessment of geographic accuracy of the spatial reference as required for the study of Murray et al. (2009, in review).

Latitude: Gives latitude of the sites where the specimen was collected (GDA94), if available.

Longitude: Gives longitude of the sites where the specimen was collected (GDA94), if available.

Dead or sick: Provides reference as to whether the specimen was noted as being dead or apparently unhealthy, if available.

Numeric variables - Variables are counts or values of latitude/longitude.

Date variables - Year is supplied.

 

TABLE 2. Summary of variable information (10183 observations, 18 variables).

Variable Name

Variable
definition

Units

Storage type

Range

Missing
value codes

Compiled_by

See above

N/A

Character

N/A

N/A

Database_ID

See above

N/A

Integer

1 – 10183

-9999

Species

See above

N/A

Character

N/A

N/A

Sex

See above

N/A

Character

N/A

N/A

Site

See above

N/A

Character

N/A

N/A

State

See above

N/A

Character

N/A

N/A

Country

See above

N/A

Character

N/A

N/A

Year

See above

Years AD

Integer

1956 – 2007

-9999

Diagnostic

See above

N/A

Character

N/A

N/A

Individuals

See above

Count of

Integer

1 – 319

-9999

Indivs_positive

See above

Count of

Integer

0 – 77

-9999

Collector_source

See above

N/A

Character

N/A

N/A

Orig_database

See above

N/A

Character

N/A

N/A

Disease_status

See above

N/A

Character

N/A

N/A

Accuracy

See above

N/A

Character

N/A

N/A

Latitude

See above

Decimal degrees (GDA94)

Floating point

-43.60623 to -13.72583

-9999

Longitude

See above

Decimal degrees (GDA94)

Floating point

114.3667 to 153.5370

-9999

Dead_or_sick

See above

N/A

Character

N/A

N/A

 

CLASS V. SUPPLEMENTAL DESCRIPTORS

A. Data acquisition

     Data forms: Various

Location of completed data forms: Various.

Data entry/verification procedures: See earlier comments on data entry and verification (Class III, Section A).

B. Quality assurance/quality control procedures: See earlier comments on data entry and verification (Class III, Section A).

C. Related material: N/A.

D. Computer programs and data processing algorithms: N/A.

E. Archiving: N/A

F. Publications using the data set:
Kris Murray, Richard Retallick, Robert Puschendorf, Lee Skerratt, Dan Rosauer, Hamish McCallum, Lee Berger, Richard Speare, and Jeremy VanDerWal (in review). Assessing spatial patterns of disease risk to biodiversity: implications for the management of the amphibian pathogen, Batrachochytrium dendrobatidis.

G. Publications using the same sites:
(Berger et al. 1998, Campbell 1999, Aplin and Kirkpatrick 2000, Morehouse et al. 2003, Berger et al. 2004, Retallick et al. 2004, McDonald et al. 2005, Ron 2005, Woodhams and Alford 2005, Department of the Environment and Heritage 2006b, a, Drew et al. 2006, Kriger and Hero 2006a, Kriger 2006, Kriger and Hero 2006b, Kriger et al. 2006, Obendorf and Dalton 2006, Kriger and Hero 2007a, b, Kriger et al. 2007, Skerratt et al. 2007, Kriger and Hero 2008, Pauza and Driessen 2008, Skerratt et al. 2008, Murray et al. 2009).

H. History of data set usage

Data request history: N/A

Data set update history: N/A

Review history: N/A

Questions and comments from secondary users: N/A

 

ACKNOWLEDGMENTS

We thank the following contributors to this database either through collection of samples or diagnostic testing: J. Agostinelli, R. Alford, A. Amey, A. Ando, D. Arts, S. Barrett, A. Beezley , M. Bezuijen, C. Brokker, T. Burbidge, Z. Car, M. Christy, J. Clarke, P. Couper, M. Cowan, W. Crombie, P. Dawson, J. Dell, A. Desmond, G. Deveraux, L. Dewar, L. Fontanini, W. Freeland, G. Gillespie, N. Guthrie, G. Hart, M. Harvey, J. Holdway, R. How, B. Huston, A. Hyatt, R. Jacobson, D. King, P. Lane, K. Maine, G. Marantelli, L. Marsh, J. Maughan, E. Meyer , S. Morgan, D. Obendorf, M. Paterson, C. Pearce, R. Pietsch, K. Pratt, E. Re, D. Roach, J. Rodda, R. Sadlier, R. Short, C. Simpkins, J. Sonnemann, D. Stewart, P. Symonds, L. Tarvey, K. Taylor, R. Teale, M. Thom, G. Thompson, M. Tyler , M. Van Sluys, L. Voigt, J. Waldock, M. Wangman, S. Watkins, A. Wayne, C. Williams, S. Williams, I. Wilson, K. Wilson, J. Wombey, M. Woodward, D. Wotherspoon, CNFN Tasmania, and any others we have overlooked. We thank Jeremy VanDerWal for his idea of publishing this data paper.

LITERATURE CITED

Altizer, S., D. Harvell, and E. Friedle. 2003. Rapid evolutionary dynamics and disease threats to biodiversity. Trends in Ecology and Evolution 18:589–596.

Aplin, K., and P. Kirkpatrick. 2000. Chytridiomycosis in southwest Australia: historical sampling documents the date of introduction, rates of spread and  seasonal epidemiology, and sheds new light on chytrid ecology. In Getting the Jump! on Amphibian Disease: Conference and Workshop Compendium, Cairns, Australia.

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