Current Members

Lab Head

Dr. Aniruddha Datta-Roy


The contemporary distribution of biota within the Indian subcontinent must have been shaped by its unique history. The Indian subcontinent was part of Gondwanaland and had close tectonic associations with Africa, Madagascar and Seychelles before eventually colliding with Eurasia, resulting in the orogenesis of the Himalayas. The initial contact of the Indian plate with Southeast Asia may have potentially resulted in an exchange of biota across these two landmasses. On the other hand, the contemporary Indian subregion remains insular from other biogeographic zones areas owing to various geographic barriers. Prolonged insularity generally promotes diversification in lineages with limited dispersal ability, resulting in endemic radiations. Beyond bearing these unique spatial and temporal signatures in its biotic assembly, the Indian subcontinent is heterogeneous in its topography, with about ten major river systems/ basins flowing out of the peninsula. Furthermore, the Indian subcontinent has about six major hill ranges. Cumulatively, these factors would have had (or still have) a significant effect on the contemporary distribution of biota within the Indian subcontinent, resulting in an interesting mix of lineages. Indian biota may therefore be composed of ancient Gondwanan relicts to lineages that dispersed more recently from other regions. I am interested in South Asian herpetofauna (reptiles and amphibians), largely due to their diversity and antiquity. However, in my lab, we have broad interests ranging from understanding systematics, biogeographic patterns, and the evolution of characters in a diverse range of taxa from the Indian subcontinent. As a lab PI, I want to maintain and inculcate a keen interest in organismal biology, ecology, natural history, systematics, and biogeography.

PhD Students

Bikash Sahoo (2019-

I joined the lab in July 2019. I am interested in understanding the evolutionary history of Army ant and, I am working on Phylogeny and biogeography of Army ant genus Aenictus Shuckard, 1840 (Hymenoptera: Formicidae: Dorylinae). Army ants are unique in having a set of behaviors known as “Army ant Syndrome”. This includes nomadism, obligate collective foraging, and a highly specialized permanently wingless queen. Army ants are broadly classified as Old World army ants and New World army ants. Genus Aenictus is one of the Old World Army ants. My work aims at conducting phylogenetic analyses of this genus across their distributional range (Old World tropics) to understand how these species are related to each other. Additionally, I intend to explore the estimation of divergence times and ancestral range evolution to understand how and when these species dispersed to different landmasses, despite their poor dispersal ability.

Besides my lab works, I love to do paintings and going outside to see the amazing World of these tiny little ants.

Pranoy Kishore Borah (2020-

I am a doctoral researcher studying the evolutionary histories and biogeographic patterns of a few select
groups of skinks. My research examines how geographic features influence species distributions and contribute to biodiversity. Using an integrative approach, I combine molecular phylogenetics, biogeographic analyses, and ecological data to investigate the factors driving patterns of diversification.
My work focuses on understanding genetic variation within and between populations to explore broader evolutionary and biogeographic trends. This research provides insights into how historical and environmental factors shape the distribution of species across tropical landscapes. By studying these fascinating reptiles across Southeast Asia and adjacent regions, I aim to contribute to understanding the processes underlying speciation and biodiversity.
Through this work, I seek to address questions in evolutionary biology and biogeography while contributing to the knowledge of tropical ecosystems and their evolutionary dynamics.

Arijit Dutta (2023-

My academic journey has been a captivating exploration into the realm of herpetofauna and their distribution patterns. What initially began as a fascination with snakes has grown into a profound interest in understanding the complexities of various herpetofaunal species, unraveling their ecological significance and evolutionary stories. The completion of my Masters in Ecology and Environmental Sciences provided a robust foundation, propelling me to delve deeper into the intricate interactions that dictate the functioning of ecosystems. Through post-masters experiences, I’ve been fortunate to participate in a few of herpetofaunal studies, gleaning insights and knowledge that have broadened my perspective on the intricate web of life within these ecosystems. My journey led me to the Biodiversity, Biogeography and Systematics (BioGeoSys) Lab in August 2023 – a pivotal moment where I transitioned my passion into purpose. My primary goal here is to shed light on the enigmatic distribution patterns of herpetofauna across the expansive canvas of the Indian subcontinent.

Beyond my academic pursuits, I find solace and inspiration in the natural world. My passion for sketching allows me to capture the intricate details of herpetofauna through art. Additionally, I indulge in the art of birdwatching, marveling at the diverse avian species that inhabit my surroundings. However, my truest passion lies in night-time herping, as I embark on thrilling expeditions to observe and study these captivating creatures in their nocturnal habitats.

Prathamesh Amberkar

I recently joined the lab in August 2025 as a PhD student. I am broadly interested in macroecology and macroevolution, particularly in understanding the evolution of traits and the factors shaping species distribution ranges. Lizards have always fascinated me, and I use them as a model system in my studies.

Beyond research, I spend much of my time outdoors,
searching for and photographing snakes, frogs, and lizards, or climbing boulders and mountains. When indoors, I prefer sleeping.

Int. MSc Students

N. Nitha Fathima

Growing up in a city, my exposure to nature was limited to the books and encyclopedias I devoured as a child and the holiday visits to my grandparents’ place. My grandfather would teach me the names of all the plants he knew while I brushed off the spiders that made their way into my hair. These experiences shaped my growing curiosity about the natural world as a child, and the nature walks I went to as I grew up only helped fuel it.

My interest in nature led me to pursue internships in ecology, from understanding how abandoned coffee plantations affect rainforest regeneration to quantifying organic carbon fractions in the soil. Over this time, I have developed a keen interest in plants, soils, and microbes, especially fungi. I find mycorrhizal symbiosis particularly intriguing, especially their role in nutrient transport and plant growth. Owing to these interests, I am working on understanding how invasive plants affect soil microbes and fungi as my Master’s project in the BioGeoSys lab.

Apart from my academic interests, I am an avid reader – I have a growing collection of books amassed over the years that I keep as a private library in my room. I frequently forage, photograph, and collect mushrooms, and I often take back rocks, leaves, and flowers from places I visit to add to my collection. At other times, you can find me writing and consuming art.

Joel J. Mathew

My interest in nature was instilled by my family, who meticulously exposed me to the wonders of nature from childhood by sharing wholesome experiences in nature and their knowledge and resources. I lived on a beautiful hill in the Western Ghats with lots of wetlands around. This blessed me with opportunities to go out into the wild, have adventures with my friends, and enjoy the wonders of nature to the fullest. Observing nature helped me to deal with my frustrations and as a productive way to spend my time. I was also lucky to interact with people who shared similar passions, and they introduced me to the world of citizen science projects and inspired me to pursue research.

I have a broad interest in different aspects of the natural world. For my master’s thesis, I plan to explore various aspects of camouflage in ground-nesting birds and understand their natural history.

I am a naturalist who enjoys hiking, cycling, music and reading books. I aim to contribute to creating a peaceful coexistence between humans and nature by connecting people to nature and enlightening them to admire the marvels of nature.

Nissy Milcia W.

As a child, I was fascinated by the wonders of the world my encyclopaedias opened up for me – I would stare at the animals that dominated our planet at different time periods and the fossils they have left behind. One of my earliest memories involves tracing my fingers over the picture of a trilobite fossil.

These childhood interests continued to influence my academic trajectory as I explored my interests in the natural world through internships and projects. My research interests lie in Evolutionary biology at levels of both microevolution and macroevolution. My previous work involved delving into the fascinating worlds of reptiles and understanding their evolutionary histories in a phylogenetic framework: where did they come from, and where did they go?

Currently, I am a Master’s student at the BioGeoSys lab. For my thesis project, I am trying to understand the effects of anthropogenic activities on a species of endemic Indian fan-throated lizard. One of the ways that humans affect wildlife is through the modification of their habitats via processes such as urbanization. My model system is found commonly around a variety of locations in Odisha, making them a good model system to understand genetic and phenotypic variation across a multitude of landscape features.

Apart from my academic interests, I like food (eating, making it, thinking about it), reading, consuming audio-visual media and sleeping.

Shivanshi Gupta

The intricate behaviors displayed by animals and insects have always fascinated me. As a city kid, I was always underexposed to nature, but that didn’t stop me from realizing how amazing it actually is. My interest in behavioral ecology and phenotypic plasticity grew over the past few years. My previous internships helped me explore more into data collection, thermal ecology, intraspecific competition, and statistics. It also made me like arthropods and reptiles as model systems. 

My recent obsession with statistics made me stumble upon species distribution models and range shifts. I’ve joined the BioGeoSys lab as a master’s student and look forward to exploring more into these ideas.

Apart from academics, you’ll find me watching movies and shows, sleeping, doodling, or listening to crime podcasts. I also enjoy playing badminton.

Neha S Prasannan

“…the secret of the Great Stories is that they have no secrets.” – The God of Small Things (Arundhati Roy)

I grew up as a child who loved stories. And who was a better storyteller than nature, overflowing with tales of all that is alive and the traces others have left behind. Dabbling in nature’s secrets in my backyard and on the occasional adventures in the Western Ghats, I realised my interest in ecology and species interactions.

My interests span diverse aspects of the natural world. I have previously done an internship in plankton ecology, which exposed me to the immense diversity and complexity of plankton communities in marine ecosystems. I have also done an internship on the analysis of mud puddling in butterflies of India. This work taught me data analysis and modelling (and also let me look at a lot of pretty butterflies!). Presently, I am on the lookout for an intriguing question that will take me on my journey of Master’s project at the BioGeoSys Lab.

Apart from academic pursuits, literature and the arts pique my interest. I love to read and collect books – fiction, nonfiction, graphic novels, and poetry. As a result of extensive reading, I have developed an interest in creative writing in both Malayalam and English.  Besides these, I love to sketch and paint, watch movies, and never stop talking about them. 

Kashish Krishania

I started off as a clueless kid, with no real idea of what I wanted to do. In fact, trying to understand
the workings of nature and the beings that are a part of it, was not something that I was always
interested in, but something that slowly and really grew on me. Now, I’m enthralled by the
interconnectedness of nature and how these connections have shaped what once existed, what we see today, and what might come next.


One such cool connection of beings that exists, is that of plants and the microbes inhabiting their
Phyllosphere. What effect do these have on their host plant’s functional trait? Do they change seasonally? Do different species share parts of their microbiome? Do the phylogenetic relationships of these species have anything to do with this? These are some broad questions that I aim to answer in my time in the lab.


Apart from this, I enjoy watching movies, playing sports, making art, and learning cool new things.

Abhishek

I’ve always been fascinated by the incredible diversity of animals, and being out in the field is one of the most exciting parts for me. Fieldwork gives me a direct connection to nature, something that constantly fuels my curiosity.


I am still exploring different directions and haven’t finalised my research project yet. Broadly, I’m interested in biogeography, various factors that shape species distribution, and drive divergence over time.

In my free time, I play video games and listen to music.