Examining the Evidence for Chytridiomycosis in Threatened Amphibian Species
2011

Chytridiomycosis in Threatened Amphibians

Sample size: 421 publication Evidence: low

Author Information

Author(s): Matthew Heard, Katherine F. Smith, Kelsey Ripp

Primary Institution: Brown University

Hypothesis

What is the role of chytridiomycosis in the decline of amphibian species?

Conclusion

The study found that only 15% of amphibian species listed as threatened by chytridiomycosis have confirmed evidence of the disease causing clinical issues.

Supporting Evidence

  • Only 15% of amphibian species purportedly threatened by chytridiomycosis have confirmed evidence of the disease.
  • Of the 36 amphibian species that deteriorated in Red List status, 28 are purportedly threatened by chytridiomycosis.
  • Advanced literature surveys found evidence of Bd infections in only ten of the 123 critically endangered amphibian species reviewed.

Takeaway

Scientists looked at how a disease called chytridiomycosis affects frogs and found that many frogs are listed as at risk, but not all of them actually have the disease.

Methodology

The study analyzed amphibian species assessments from the IUCN Red List to determine the threat level from chytridiomycosis.

Potential Biases

The precautionary principle may lead to overestimation of the threat posed by chytridiomycosis without sufficient evidence.

Limitations

The study relies on data that may not be updated, leading to potential discrepancies between real-time science and Red List assessments.

Digital Object Identifier (DOI)

10.1371/journal.pone.0023150

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