The miniature toads belong to the genus Brachycephalus for their impressive capability to jump thirty times their body length. They are named, Brachycephalus dacnis, after conservation Project Dacnis, the NGO that maintains and protects private areas of the Atlantic Forest. The discovery was documented by Luís Felipe Toledo, a herpetologist at the University of Campinas in Brazil. The toad measures 6.45 millimetres long, holding the title of the second-smallest vertebrate in the world. It is very astonishing, that the species that has been recorded as the world’s smallest vertebrate belongs to the same genus.
Dr. Toledo received an audio file from his colleague who was studying miniature frog species in Brazil’s Atlantic Forest. The moment he heard the recording he was sure that he was listening to something novel. B.dacnis has a soft volume with a chirpy voice often mistaken for cricket. They also discovered that Brachycephalus frogs have a similar physical appearance, making their mating calls unique or distinct to help females identify the males of their species.
His team had also performed high-resolution CT scans on the toads and detected something very strange, B.dacnis’ skeleton structure is similar to that of normal-sized frogs due to their fused skeleton which is not a usual case.
“There are untold numbers of unknown tiny frogs out there,” says Mark Scherz, curator of herpetology at the Natural History Museum of Denmark. He also mentioned that “these small species have been overlooked previously by virtue of how hard they can be to find and collect.”
Researchers will continue exploring the Atlantic Forest to find more miniaturized species that will help in a better understanding of vertebrate evolution and adaptations. However, with the increased deforestation, conservation strategies are essentially required to safeguard these unique species.
The discovery of B.dacnis illuminated the vast diversity of life that thrives in miniature form. As Dr. Rowel pointed out, “So much of our biodiversity, known and unknown, is small and camouflaged and, not surprisingly, often goes unnoticed,”