Yash Sondhi

Florida International University | FIU · Department of Biological Sciences

Circadian rhythms drive many biological patterns, such as activity periods. The temporal partitioning that results can reduce predation, minimize competition, or enable new resource utilization. It can also drive the evolution of sensory systems, such as the highly specialized antennae with which male moths find mates, and the visual specialization...

For millennia, humans have watched nocturnal insects flying erratically around fires and lamps. Explanations have included theories of "lunar navigation" and "escape to light". However, without three-dimensional flight data to test them rigorously, this odd behaviour has remained unexplained. We employed high-resolution motion capture in the labora...

With a great variety of shapes and sizes, compound eye morphologies give insight into visual ecology, development, and evolution, and inspire novel engineering. In contrast to our own camera-type eyes, compound eyes reveal their resolution, sensitivity, and field of view externally, provided they have spherical curvature and orthogonal ommatidia. N...

Characterising the frequency and timing of biological processes such as locomotion, eclosion or foraging, is often needed to get a complete picture of a species' ecology. Automated trackers are an invaluable tool for high‐throughput collection of activity data and have become more accurate and efficient with advances in computer vision and deep lea...

There have been several recent checklists, books and publications about Indian moths; however, much of this work has focused on biodiversity hotspots such as North-east India, Western Ghats and Western Himalayas. There is a lack of published literature on urban centres in India, despite the increased need to monitor insects at sites with high level...

Advances in computer vision and deep learning have automated animal behaviour studies that previously required tedious manual input. However, tracking activity of small and fast flying animals remains a hurdle, especially in a field setting with variable light conditions. Commercial locomotor activity monitors (LAMs) can be expensive, closed source...

Opsins, combined with a chromophore, are the primary light-sensing molecules in animals and are crucial for color vision. Throughout animal evolution, duplications and losses of opsin proteins are common, but it is unclear what is driving these gains and losses. Light availability is implicated, and dim environments are often associated with low op...

The arthropod compound eye is the most prevalent eye type in the animal kingdom, with an impressive range of shapes and sizes. Studying its natural range of morphologies provides insight into visual ecology, development, and evolution. In contrast to the camera-type eyes we possess, external structures of compound eyes often reveal resolution, sens...

A new species, Metallolophia taleensis, sp. nov., is described and illustrated from Tale Wildlife Sanctuary, Lower Subansiri District, Arunachal Pradesh, India, based on male specimens. A second species, Metallolophia opalina (Warren, 1893), is recorded from India after more than a century, extending its range eastwards into Arunachal Pradesh, Indi...

Opsins are the primary light-sensing molecules in animals. Opsins have peak sensitivities to specific wavelengths which allows for color discrimination. The opsin protein family has undergone duplications and losses, dynamically expanding and contracting the number of opsins, throughout invertebrate evolution, but it is unclear what drives this div...

We present a list of 282 species of moths recorded during surveys conducted over 31 survey nights during a 3-year period in Shendurney Wildlife Sanctuary (WLS) and Ponmudi, Kerala, India. Shendurney WLS and Ponmudi are part of the Agasthyamalai Biosphere Reserve in the southern Western Ghats, which is one of India’s three biodiversity hotspots. She...

A new species of the genus Theretra Hübner [1819], Theretra shendurneensis sp. nov., is described from Shendurney Wildlife Sanctuary, southern Western Ghats, India, based on external and internal morphology, and genetic markers. The new species is compared in external and male genital morphology, genetic divergence and geographic range with three s...

Forty-two (42) species of butterflies were recorded from a short survey of Ladakh and Lahaul in the inner Himalaya in Jammu & Kashmir and Himachal Pradesh. Here, we provide location and altitude records for these species, data on their abundance, photo-documentation of the life cycle of Pieris deota and P. brassicae as well as the first published r...

While in the movie Deadpool, it is possible for a human to recreate an arm from scratch, in reality, plants can even surpass that. They can not only regenerate lost parts, but also the whole plant body can be reborn from a few existing cells. Despite decades old realization that plant cells possess the ability to regenerate a complete shoot and roo...

Two-hundred-and-forty-eight species of moths were recorded during surveys conducted over 40 nights in Dehradun and Mussoorie in Dehradun District and Devalsari in Tehri Garhwal District in Uttarakhand.

The butterfly Calinaga aborica Tytler, 1915 has been re-discovered a hundred years after its original description, and its range extended by 200km westwards into western Arunachal Pradesh, India.