By: Muhammad Arshad Rana, Munaza Shabnam, Naureen Rana, Tayyba Sultana, Salma Sultana, Sobia Kanwal, Imran Ahmad
- Department of Zoology, Govt. Postgraduate College Okara, Pakistan
- Department of Biology, Govt. Postgraduate College for women Sahiwal, Pakistan
- Department of Zoology, Wildlife and Fisheries, UAF, Pakistan
- Department of Zoology, Govt. College University Faisalabad, Pakistan
The present study was designed to record the distribution of ground
dwelling spider genera among mustard crop at Okara district. Sampling
was made from Brassica compestris crop through pitfall traps. Equal
number of traps were placed in three rows e.g. along the boundary,
middle of the field and centre of the field.
Each trap was filled with
mixture solution of alcohol and glycerin (70:30%) along with few drops
of kerosene oil. After 5 days interval sample traps was collected and
spider specimens were washed with distilled water and permanently stored
in labeled glass vials, and brought into the Pest Control Laboratory,
Department of Zoology, Wildlife and Fisheries, University of
Agriculture, Faisalabad. Thereafter, each spider specimen was identified
according to the taxonomic material and internet source. Identified
data was analyzed statistically to quantify their spatial distribution.
Maximum spatial distribution of spider population was documented in
middle transect than boundary and centre of the mustard crop. It was
also observed that temperature, humidity and prey availability were the
major factors that effecting the spider population. Population
variations were recorded during the months of February, March and April
in 2015, due to rise of temperature, decrease of humidity and
availability of prey. Conclusively, spiders have some correlation with
suitable local conditions or habitat. More over, spiders are cost
effective, functionally significant and play important role in
regulating decomposer population. Source of the original articles at : Population dynamics of ground dwelling spider genera among mustard crop
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