Assessment of Diversity and Distribution of Snails (Mollusca: Gastropoda) in the Agroecosystem of Faisalabad, Pakistan
By: Javaria Altaf, Naureen Aziz Qureshi, Syed Hammad Raza, Muhammed Javed Iqbal Siddiqui
Key Words: Snails, Diversity, Distribution, Agroecosystem, evenness.
J. Bio. Env. Sci. 8(1), 17-33, January 2016.
Gastropods have never been studied in Punjab, Pakistan with reference to its diversity and distribution. Different ecological factors have been studied which affect the distribution of the snail in the agroecosystem of this region. Total number of 19290 snails specimens, were collected from different cropland areas of 24 villages of Faisalabad including sugarcane, wheat, fodder, vegetables fields and ditches. The specimens were identified on the basis of recent identification keys and diagrammatic description provided in them to understand the biodiversity in this region. The diversity index was found highly significant in sugarcane, wheat, fodder, and vegetables fields however the results were non-significant in case of ditches. The relative abundance was maximum in sugarcane and least in ditches. The diversity index was significantly high in all months except in April whereas the relative abundance was maximum in July and August. It can be concluded that due to environmental degradation and water pollution the snail diversity is non significant, in ditches however in the agroecosystem it is a pest. It can be suggested that strategies must be developed to control water quality deterioration and its biological control as a pest.