Scientists discover four new miniature frog species in Western Ghats

Posted on:23 Feb 2017 09:08:17
Scientists discover four new miniature frog species in Western Ghats
23 February 2017 Current Affairs: Scientists have discovered four new species of miniature night frogs no bigger than a human thumbnail in Western Ghats, a global biodiversity hotspot. These species were discovered among the seven new ‘Night Frogs’ by a team of researchers from the University of Delhi and Kerala Forest Department.

Four new species of miniature night frogs are (i) Athirappilly Night Frog: It was discovered close to the Athirappilly waterfalls. (ii) Sabarimala Night Frog: It was discovered near the Sabarimala hill shrine.  (iii) The Radcliffe’s Night frog and (iv) Kadalar Night Frog: They were reported from plantation areas.

Night Frogs belong to the Nyctibatrachus genus, endemic to the Western Ghats. They make a distinctive chirping sound comparable to that of a cricket. These tiny amphibians are present in abundance in the region but were overlooked in the past because of their extremely small size, secretive habitats and insect-like calls.

 They were confirmed as the new species with the help of integrated taxonomic approach that included DNA studies, detailed bioacoustics and morphological comparisons. 

Threats: Over 32% of the frog species in the Western Ghats are threatened with extinction. Out of the seven new species, 5 face considerable anthropogenic extinction threats and require immediate conservation. Ancient Group:

 Night Frogs represent an ancient group of frogs that diversified on the Indian landmass approximately 70 to 80 million years ago. 

Total Nyctibatrachus species: This discovery has taken the total number of known Nyctibatrachus species to 35, of which 20% are less than 18 mm in size (i.e. they are diminutive).

 As many as 103 new amphibian species were discovered from biodiversity rich Western Ghats region between 2006 and 2015.

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