Context: Scientists announced the discovery of a new amphibian species, Nyctibatrachus kali (commonly called the Kali night frog), in the central Western Ghats of Karnataka.
About The Kali Night Frog:
What It Is?
- The Kali night frog is a newly documented amphibian belonging to the ancient genus Nyctibatrachus (night frogs), which is entirely endemic to the Western Ghats mountain range.
Habitat: It inhabits the pristine, torrential stream ecosystems and humid leaf litter of the Castlerock rainforest region within the Kali river catchment basin.
Key Characteristics:
- Cryptic Nature: It is morphologically almost identical to the previously known Kumbara night frog (Nyctibatrachus kumbara), making it a “cryptic species” that can only be accurately identified using modern laboratory tools.
- Distinct Genetic Lineage: Advanced DNA isolation and sequencing confirmed that the frog represents an entirely separate, unique evolutionary lineage from all other known night frogs in independent India.
- Unique Bioacoustic Call Profile: Acoustic analysis of the male frog’s mating call revealed distinct frequency and pulse patterns that separate it from its closest geographical neighbors.
- Nocturnal Streamside Adaptation: It exhibits specialized micro-habitat preferences, remaining highly active at night near fast-flowing, clear mountain streams and shadowed rock crevices.
- Tiny Geographical Footprint: Like many members of its genus, the species has an micro-endemic distribution, meaning its global population is restricted to a very small, specific pocket of the central Western Ghats.
Significance of the Discovery:
- The discovery highlights successful collaboration between local communities, forest officials, and scientific researchers in advancing citizen science.
- It also reinforces the immense ecological importance of the Western Ghats, where nearly 94% of the 253 amphibian species are endemic to the region.
