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Three New Vertebrates Found Only on Dauan Island Are Formally Described

The discoveries highlight a boulder‑field refuge that now demands tighter biosecurity.

Overview

  • Scientists named a gecko and two frogs—Nactus simakal, Choerophyrne koeypad and Callulops gobakula—in Zootaxa papers published in mid‑October.
  • All three animals appear confined to Dauan’s deep granite boulder fields, which provide cool, moist microhabitats rare in the Torres Strait.
  • The frogs are microhylids believed to develop directly from eggs without a free‑swimming tadpole stage, reflecting life histories seen in New Guinea relatives.
  • Researchers and conservationists warned that invasive species pose the greatest risk to these narrow‑range endemics, noting a cane toad was recently trapped on nearby Saibai Island.
  • Local leader Torenzo Elisala welcomed the findings as culturally significant, and rangers plan further surveys to gauge populations and assess potential threatened listings.