• K.Moorthikumar
• A.Krishnamoorthi
• M.Ayyappan

Abstract Environmental factors are involving dryness of the pond due to less precipitation and excessive heat radiation that are highly challenging the survival of pond snails. The present study investigated the Changes in the movements of the snail, Lymnea stagnalis as the water level in the pond completely dried up. Even at pond water levels as low as one foot to 6 inches, normal movement of snails was observed without any changes in horizontal movement. As the water level decreases below 3 inches in the pond, the snails deviate from their normal horizontal movement and move downwards into the soil. It is adapted to horizontal movement while searching for the most suitable habitat. However, the water level in the pond dries up completely, a passion for survival developed by snails rushes to move towards the moisture in the soil.It starts burrowing into the bottom sediments of the pond which are more humid and cooler, increases the survival of gastropods and allows them to wait for better environmental conditions.

Keywords: Environmental, Lymnaea stagnalis, Horizontal, Vertical and Burrowing

"Influence of Pond Dryness on Behavioural Changes in Freshwater Snail, Lymnaea stagnalis", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 12, page no.f126-f130, December-2022, Available :http://www.jetir.org/papers/JETIR2212518.pdf

"Influence of Pond Dryness on Behavioural Changes in Freshwater Snail, Lymnaea stagnalis", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 12, page no. ppf126-f130, December-2022, Available at : http://www.jetir.org/papers/JETIR2212518.pdf