2015 Vol. 21 No. 2 PP 219­-224

BIOTIC AND ABIOTIC COMPONENTS ASSOCIATED WITH FRESHWATER SNAILS AT GULARGHATI IN DOON VALLEY, UTTARAKHAND

N. PEMOLA DEVI^*, SHWETA SINGH AND R.K. JAUHARI

Parasitology Laboratory,
Department of Zoology,
D.A.V. (P.G.) College,
DEHRADUN (UTTARAKHAND)
* Department of Zoology,
D.B.S. (P.G.) College,
DEHRADUN (UTTARAKHAND)
Email: npmola@rediffmail.com

ABSTRACT

The present work was carried out for the occurrence of aquatic flora and fauna associated with freshwater snails. Monthly zooplankton and phytoplankton samples were obtained from selected sampling sites at Gularghati in Doon valley. In gastropods, 7 species of freshwater snails, viz., Lymnaea acuminata, Thiara tuberculata, Melanoides crebra, Thiara scabra, Indoplanorbis exustus, Physa acuta and Gyraulus convexiusculus were collected. Abundance of biotic community showed maximum in the winter season and the site reservoir contributed maximum. Both phyto and zooplankton showed positive correlation with conductivity and negative correlation with other selected parameters. On the other hand snails exhibited negative correlation with potassium and hardness.

Key words :Biotic/abiotic components, Doon Valley, Fresh water snails, Gularghati.