Researchers at the Centre for Cellular and Molecular Biology (CCMB) in Hyderabad have made significant discoveries about the evolution of species across South Asia. This groundbreaking study was published in the academic journal Ecology Letters and is the first of its kind to examine the patterns of species formation and extinction in Asia.
The research team analyzed 33 well-known groups of animals and plants using advanced mathematical models. They aimed to understand how these species evolved and how some disappeared over millions of years. Dr. Jahnavi Joshi, a senior scientist at CCMB, explained that each group studied consists of closely related species that share a common ancestor.
The study found that species formed and went extinct at varying rates in different groups. For example, certain types of lizards showed similar patterns in how quickly they gained or lost species. Interestingly, the researchers discovered that many of these groups accumulated diversity gradually, taking millions of years to evolve.
One major finding of the study is the role of peninsular India, with its stable tropical forest ecosystems, in preserving biodiversity. Dr. Joshi noted that these forests acted as refuges during significant climate changes, allowing species to survive and diversify. This stability is particularly surprising given that peninsular India has a tumultuous geological history, having once been part of the ancient Gondwanaland supercontinent.
Pragyadeep Roy, the first author of the study, explained that even though peninsular India has undergone drastic geologic shifts over time, its biodiversity has surprisingly remained rather stable. This stability is attributed to the region’s unique ecosystem, which has provided a continuous environment for species to thrive.
The CCMB’s study is expected to shed light on conservation strategies in Asia, emphasizing the importance of maintaining healthy ecosystems to support biodiversity as climates continue to change. The findings highlight how past stability can inform present and future efforts to protect the diverse life forms that inhabit our planet.
-Rashmi Kumari
