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New miniature species among the world's smallest vertebrates: a new flea-toad from the Atlantic rainforest (335 notícias)

Publicado em 30 de outubro de 2024

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In October 2024, researchers made a remarkable discovery: a new miniature species of frog from the Atlantic Rainforest, officially named Brachycephalus dacnis.  This tiny toad is the second-smallest vertebrate ever described, measuring less than 7 mm in length. Slightly smaller than a small flea and just over a centimeter long in adulthood, this species is significantly smaller than a covert fingernail.

The find was led by Professor Luís Felipe Toledo and his team at the Institute of Biology (IB-UNICAMP) in Brazil. This species is named in honor of Projeto Dacnis , a conservation project crucial for preserving these ancient rainforests. The name pays tribute to both their conservation efforts and the considerable research invested in these areas, where many unique species are still being discovered.

One fascinating aspect of these tiny frogs is their evolutionary journey known as miniaturization. They have evolved to be incredibly small, differing from many other species by losing and reducing bones, and sometimes more digits. This adaptation allows these toads to thrive in their environment, often living in leaf litter or dense vegetation where their tiny size aids in особи биологічного та помірно-кліматического характеру) рисы допомогать їм робити великою мутиruck a.

This particular species, Brachycephalus dacnis , was discovered because of its distinct vocalizations, despite sharing similar physical attributes with another species, B. hermogenesi . The scientists found that their calls differ, indicating they are unique species despite living in the same region. DNA sequencing confirmed this discovery after collecting specimens from a known spot in Ubatuba, on the coast of São Paulo, where similar species were previously identified.

Understanding the biodiversity of these miniature frogs is critical for conservation efforts in the highly threatened Atlantic Rainforest. The expansion of B. dacnis into different areas may rewrite the understanding of how these species interact and evolve. While some specimens potentially contributed to the description of earlier species like B. hermogenesi , historical DNA sequencing could bring additional clarity by confirming these details.

The research emphasizes the need for comprehensive documentation of new species to aid in conservation planning. As still many species remain undocumented, reinforcing their characteristics through thorough descriptions that include molecular data, vocalization details, and skeletal/ internal organ traits is essential.

With every new species discovery, the more critical the need to expand conservation efforts in the Atlantic Rainforest. Support projects like Projeto Dacnis and encourage more research to unravel the mysteries of these tiny frogs. Every effort contributes to preserving these irreplaceable biodiversity hotspots.

If you're interested in learning more or supporting the discovery and preservation of these amazing creatures, please check out the published research and share your thoughts in the comments below. Your help ensures these delicate ecosystems and their inhabitants thrive for generations to come.