International network for natural sciences – research journal
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Estimation of spatial diversity of spider species among mustard crop through pitfall trap method

By: Muhammad Arshad Rana, Munaza Shabnam, Naureen Rana, Tauseef Ullah, Luqman Khan, Sobia Kanwal, Marriam Batool, Shamsa Altaf

Key Words: Spatial, Diversity, Pitfall, Mustard, Species.

J. Bio. Env. Sci. 8(4), 132-141, April 2016.


The present study was conducted to estimate the spatial diversity of spider species among mustard crop at Okara district, Punjab, Pakistan. Sampling spiders was made on fortnight basis through pitfall traps. Equal number of traps filled with mixture solution of alcohol and glycerin (70:30%) along with few drops of kerosene oil were placed in three rows e.g. along the boundary, middle of the field and centre of the field. After 5 days interval sample traps collected and spider specimen were washed with distilled water and permanently stored in labeled glass vials. All the spider specimens were identified according to the taxonomic material and internet source. Overall maximum spatial distribution of spider species was documented in middle transect than boundary and centre of the mustard crop. Spatial diversity was estimated during the months of February, March and April in 2015, due to rise of temperature, decrease of humidity and availability of prey. Conclusively, spider species have some correlation with temperature and suitable local conditions. More over, these species are functionally significant and play a key role in regulating decomposer population.


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