Study On Community Structure Of Spider, Spatial Distribution Pattern And Spatial Niche Of Dominant Species Spiders In Different Habitats

Twenty one species of spiders,belonging to 25 genera and 11 families.were found in the fields near Hunan Agricultural University.Of which, Pirata subpiraticus, Ummeliata insecticeps, Coleosoma octomaculatum and Pardosa pseudoannulata were dominant.The diversity index.Species richness and individual density of the spider community in the glass field were mach higher in the diversified habitat compared to the simple habitat.Spider is an important natural enemy of the vegetable pests, vegetable integrated pest control measures can not be ignored in the important components. Its variety, all predatory and the vast majority are feeding more. Spider advantage for the division Lycosidae,Tetragnathidae,Theridiidae, Salticidae, Pardosa pseudoannulata, Tetragnatha maxillosa, Coleosoma octomavulatum. P. sulpiraticus and P. pseudoannulata profile for You Lie-spider, the spider to be part of Leopard profile niche comparable to P. sulpiraticus, in the vegetable base, stem and foliage are distributed, and to the main water Lycosidae in the distribution of vegetables and the base of the stem, leaves little distribution; ditch show of spider, C. octomavulatum and T. maxillosa Octopus octopodia for the networking of spiders, its width are narrower niche, ditch show of spider Mainly distributed in the vegetable base and Coleosoma octomavulatum mainly distributed in the stem and leaf vegetables, Tetragnatha maxillosa rather special, their larvae are mainly distributed in the vegetable base and stem, a spider leaf vegetables in the evening networking predatory insects during the day at Wo Ye The stem catching insects and vegetables. Lettuce to the major pests for Pieris rapae, aphids, Pentatomidae Xiang, leafhopper sheath and Hymenoptera target pests and so on.Spider vegetable is an important natural enemy of the vegetable pests, vegetable integrated pest control measures can not be ignored in the important components. Its variety, all predatory, the vastmajority are feeding more. This article dealed with the spatial niche of dominant species spiders in vegetable field. The results showed that breadth value and overlap value of spatial niche were the order:the noon<the morning<the afternoon.