Published Paper Details:

Insects represent the culmination of evolutionary development of terrestrial arthropods and have adopted to the most diverse types of environment. The transition from aquatic to terrestrial mode of life was a crucial step in the evolution of higher metazoa and undenieable so in the tracheaete arthropoda. Insects of any water body plays significant role in maintaining ecological balance and becomes part of food chain, food web at specific trophic levels .Besides , they functions as biological indicators for determining the water quality and pollution in respective water bodies. The present investigation also reveals the role of insects and their types in a particular water body i.e river Tawi in Jammu. In Jammu region there are so many water bodies starting from wells, ponds, springs, lakes, and reaches upto streams but lacking coastal areas or oceans since the region is surrounding by hilly terrain. The river tawi is considered as holly and sacred river from religious point of view and supposed to be a life line of the Jammu city and other towns located on the banks of river . During this investigation it has been observed that there are large no of insect species present in the river but maximum emphasis were given on the subject about presence of some developmental stages of insects found frequently on the river banks. The most common method used for this study was hand nets , scoops and forceps capturing and even manual capturing was also carried out keeping in view the harmless nature of insects .In this study about 2-3 kms area of river tawi were investigated near the main tawi bridge.It has also been observed and realized during the investigation that the impact of pollution gradually reduces the population of some important insect species in the river. There are about 4-5 species of insects were observed and studied at different developmental stages ( larval , nymphal and adults ).