Studies On The Arthropod Community Structure In Quercus Acutissima Carruth Forestry And Biological, Ecological Characters Of Sybrida Fasciata Butler

The studies reports the characteristics of the arthropod community structure in Quercus acutissima Carruth forestry in Konglin of Qufu city and also the life history,life behaviour,cold resistance,spatial distribution pattern of larva; the developing period and total effective temperature of egg and larval in varied constant temperatures are also investigated in the research. The studies yields the following conclusions:1,The studies set up a record of arthropod in Quercus acutissima Carruth forestry, including 74 species, which can be classified into 11 orders and 57 families. The group structure features arthropod in Quercus acutissima Carruth forestry were also analyzed2,The life history and life behaviors of Sybrida fasciata Butler in Shandong Province are made clear. In the first ten days of September, aged larva start going down the tree, and then bore into the thin solum, deadwood, or fallen leaves to overwinter. The larva, with a long life history, have 5 instars and occur irregularly: small larva can be found from Late June to early September.3,The adults have strong phototaxis. The pests can be trapped and killed with Jiaduo Frequency Trembles Grid lamps. Results show that the amount of adults being killed by the lamps reaches its maximum between 21:00and 22:00, which accounts for 62.12 percent of the total amount for each night.4,From September of 2004 to April of 2005, the Super-cooling point and freezing point for the larva of Sybrida fasciata Butler to overwinter were measured in the middle ten days of every month. The result shows that its...