Abstract
Freshwater molluscs are the integral part of every aquatic ecosystem and help not only in the ecosystem’s functioning but also enable the ecologists to judge the health of their abode. These shelled animals are used as the best biomonitoring tools worldwide. Gradually declining water quality of freshwater bodies owing to multiple factors, their biodiversity is also facing threat. Majority of the freshwater bodies near human vicinities are facing anthropogenic interventions, habitat destructions and overexploitation and the same is being reflected by the elimination of sensitive molluscan species and survival as well as abundance of other tolerant ones. The current study has been undertaken to understand the Malacofauna biodiversity in Morni hills, Panchkula, Haryana. During the study, total 359 gastropods both aquatic and land snails were collected. Pre-monsoon season witnessed greater molluscan abundance, 8.46 times, than post-monsoon. The molluscan biodiversity, 7 species, 7 Genera and 5 families, namely Filopaludina bengalensis, Melanoides tuberculata, Radix luteola, Gyraulus ladacensis, Indoplanorbis exustus, Ariophanta interrupta and Macrochlamys indica.Shannon-Weiner Index (H) and Simpson Diversity Index (D) for both seasons indicated higher species diversity during post monsoon season. Melanoides tuberculata was found to be dominant during pre-monsoon while Filopaludina bengalensis during post monsoon season.
Highlights
The Molluscs are soft bodied animals, with or without external shell showing great diversity and antiquity
Other helps in nutrient cycle and are used as bio indicator of their ecosystem’s pollution, play a pivot role in ecological studies (Sharma et al, 2013; Kumar et al, 2018) of aquatic ecosystems
Study Area Teekar Taal known as Bhim Taal is a natural lake located in Morni hills of district Panchkula, Haryana (Figure 1) with width of 550m and length 460m a perfect tourist place surrounded by lush green hillocks
Summary
The Molluscs are soft bodied animals, with or without external shell showing great diversity and antiquity. Statistical Analysis To understand the species richness/diversity and abundance of molluscan fauna, in Teekar Taal during pre and post monsoon season following indices were used: -
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