Demaorchestia Alanensis

Researchers at Berhampur University, Odisha have discovered a new species of marine amphipod found in Chilika Lake.

Amphipods

They are commonly called Scuds or side swimmers.
They are found commonly in both surface and subterranean freshwater habitats.
They constitute the most diverse and ubiquitous (being everywhere) group in freshwater.
Amphipods are a significant group in the marine ecosystem and play a vital role in the marine food chain.
They also serve as indicators for studying the impact of climate change and health of coastal ecosystems.

Demaorchestia alanensis

It is a shrimp-like crustacea of genus Demaorchesti and was named Demaorchestia alanensis after global expert professor Alan Myers.
Features - The new species is white in colour and less than 15 millimetres in length and has 13 pairs of legs.
While three pairs are used for swimming in the water, eight pairs are used for walking on land.
The other two pairs are used for capturing prey and feeding.
The species can be distinguished from the other members of the genus by two to three strong, hair-like structures or setae on the anterior margin of the propodus of the gnathopod.
It belongs to the subfamily Platorchestiinae found along the Indian coast.

Other such amphipods found in India are Quadrivisio Chilikensis from the seaweeds near Nalaban and the Talorchestia buensis from the West Bengal coastal area.

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