Kolkata, May 25 -- In a major breakthrough for Indian biodiversity research, scientists have developed the first and largest DNA barcode reference library for the cockroaches of peninsular India.
The landmark study reveals that India's hidden cockroach diversity is far greater than previously recognised, uncovering several poorly known, undocumented groups and endemic lineages found nowhere else on Earth.
While cockroaches are widely misunderstood and stereotyped purely as household pests, the vast majority of wild species are harmless. As one of the oldest and most diverse insect groups on Earth, they play a vital role in maintaining natural ecosystems by decomposing organic matter, recycling nutrients, and supporting forest food webs. Furthermore, because these wild species are highly sensitive to environmental disturbances, they serve as crucial indicators of ecosystem health. The research team-comprising scientists from the Zoological Survey of India (ZSI) Western Regional Centre (Pune) and Southern Regional Centre (Chennai), alongside Prof. Ramkrishna More College (Pune)-generated more than 100 DNA barcodes.
DNA barcoding functions like a supermarket scanner, utilising short, standardised DNA sequences to achieve rapid and highly accurate species identification. By blending these modern molecular techniques with traditional taxonomy, the study successfully resolved long-standing taxonomic ambiguities and mapped out previously overlooked evolutionary lineages.
"The study highlights the growing power of DNA barcoding as a globally recognised tool for uncovering hidden species diversity, resolving taxonomic ambiguities, and documenting poorly known groups such as cockroaches," said Dhriti Banerjee, Director, ZSI, Kolkata.
Published by HT Digital Content Services with permission from Millennium Post.