Darwin’s frog

Chile has launched a new government initiative to save the endangered Darwin’s frog, a tiny amphibian known for its extraordinary reproductive strategy. This conservation effort, spearheaded by the Chilean government’s climate change and sustainability committee, aims to protect the frog’s habitats and reproductive areas, and to collaborate with private landowners to secure its future.

About Darwin’s Frog

• Unique Reproductive Method: The male Darwin’s frog exhibits a rare form of parental care known as “paternal mouth-brooding.” After the female lays a clutch of 4 to 10 eggs on the forest floor, the male guards them for about three weeks. He then swallows the eggs and carries the developing tadpoles in his vocal sac for about six weeks. The young frogs complete their metamorphosis inside the sac and are “coughed up” as fully formed froglets.
• Species and Conservation Status: The frog, which measures about 3 cm (1.18 inches), was discovered by Charles Darwin in 1834. What was once considered a single species is now known to be two:
  • Southern Darwin’s frog (Rhinoderma darwinii): Currently classified as “Endangered” on the IUCN Red List.
  • Northern Darwin’s frog (Rhinoderma rufum): Classified as “Critically Endangered” and has not been seen since 1980, with some scientists believing it to be extinct.
• Threats to Survival: The humid forests of southern Chile and Argentina, where these frogs live, are under severe threat from a combination of factors:
  • Habitat loss and fragmentation due to urbanization and large-scale replacement of native forests with non-native pine and eucalyptus plantations.
  • Forest fires and climate change.
  • A devastating and widespread amphibian disease caused by the chytrid fungus (Batrachochytrium dendrobatidis), which has decimated amphibian populations globally.
• Conservation Goals: The Chilean government’s new initiative, along with support from NGOs like Ranita de Darwin and international zoos, aims to:
  • Discover new populations of the frog.
  • Substantially increase the size and area of current populations.
  • Raise public awareness about the frog’s plight and the importance of preserving Chile’s native forests.

(Source: TH)