The human-mediated transport of infected amphibians is the most plausible driver for the intercontinental spread of chytridiomycosis,
a recently emerged infectious disease responsible for amphibian population declines and extinctions on multiple continents.
Chytridiomycosis is now globally ubiquitous, and it cannot be eradicated from affected sites. Its rapid spread both within
and between continents provides a valuable lesson on preventing future panzootics and subsequent erosion of biodiversity,
not only of amphibians, but of a wide array of taxa: the continued inter-continental trade and transport of animals will inevitably
lead to the spread of novel pathogens, followed by numerous extinctions. Herein, we define and discuss three levels of amphibian
disease management: (1) post-exposure prophylactic measures that are curative in nature and applicable only in a small number
of situations; (2) pre-exposure prophylactic measures that reduce disease threat in the short-term; and (3) preventive measures
that remove the threat altogether. Preventive measures include a virtually complete ban on all unnecessary long-distance trade
and transport of amphibians, and are the only method of protecting amphibians from disease-induced declines and extinctions
over the long-term. Legislation to prevent the emergence of new diseases is urgently required to protect global amphibian
biodiversity.
Keywords chytrid - wildlife disease - amphibian declines - extinction -
Batrachochytrium dendrobatidis
- pet trade