Aquatic and Semiaquatic Heteroptera (Hemiptera: Insecta) of Great Nicobar Biosphere Reserve, Andaman and Nicobar Islands, India

Aquatic bugs are an integral link in the food chain, forming food for larger organisms, which in turn are consumed by even larger organisms. They are also indicators of water quality. The Great Nicobar Biosphere Reserve having an area of 88,500 ha. is the only island in the Nicobar having five perennial rivers namely, the Galathea, the Jubilee, the Dak Aniang, the Dak Tayal and the Amrit Kaur originate from Mt. Thullier. The Galathea is the longest and widest river flows southward to meet the sea at Galathea Bay.