Seasonal and collection method variation on spider abundance in Jungle ecosystem of Barpeta district, Assam

Suruchi Singh

Volume : VII, Issue : II, February - 2017

Seasonal and collection method variation on spider abundance in Jungle ecosystem of Barpeta district, Assam

Suruchi Singh

Abstract :

The study area, Barpeta district of the state Assam, lies between Latitudes 26⁰5’ N to 26⁰49’ N and Longitudes 90⁰39’E to 91⁰17’E covering an area of 3245 sq Km. A year survey was carried out during April 2015 to March 2016 in all the four seasons of the year of this area to assess the spider diversity. Many specimens were collected by visual search methods and the collection methods adopted to carry out the sampling are Aerial hand collection, Ground hand collection and Beat sheet method. The specimens were preserved in 70% ethyl alcohol. 60 spider species from the different blocks of Barpeta District were documented. The paper shows the difference in quantity and quality of spider fauna in relation to the seasons and collection method.The spider species were more active in summer and post monsoon season and more than half of spider species were collected by aerial hand method.