The Research Of Biology And Management Of Red Imported Fire Ant Solenopsis Invicta (Buren)

This thesis, through methods, such as outdoor investigation, raising and indoor experiment in the room, etc., from Dec. of 2004 to Dec. of 2005, carried on research and analyzed about the biological characteristic and the management methods of Solenopsis invicta Buren taking place in Shenzhen, the result shows:The S. invicta take place in various kinds of environments in the whole year in South China of our country, especially there are more ripe lawns on the sunny side with what has been planted in 3 years; It is easy to attack to S. invicta, people who are attacked by the S. invicta, the allergic would sustained for 20d, and with itch 4-5 times, the whole course can be divided into 3 stages, which are taken place the redness, produce the pustule and forming a scab to fully recover.It is oval and small to the S. invicta's ovum; The larva has no foot, the form is like the little grub; The pupa is pupa nuda, the long shape of body; The adult individual differs greatly, the length is from 0.20cm-0.90cm, its size does not have absolute boundary, determine and discern for being convenient that can assign into 3 castes: the ant of workers (soldiers), females and males.It is complicated to invade the structure within the S. invicta's nest, similar and cellular, can divide the ant nest into 3 kinds, namely regular knoll, sandy beach and taper shape according to the height of the mound; Some underground ant one of ant nest are complicated and changeable, can divide it into 3 parts according to the density degree and the level and vertical ant's proportion of one of direction of the ant one, namely the grass root, intermediate level and ground level; The differences of water content of soil between the ant nests are remarkable in different soil types; except wasteland, there is no remarkable difference in the water content of soil between the same massif type ant nests. It is complicated to S. invicta's population's structure, all kinds of individual's distribution in the ant nest changes with the changes of the temperature and humidity in the ant group, select terms ant herds of larva is it distribute in mound bottom and part close of ant nest to concentrate on in experiment, the pupa concentrates on being distributed in the mound part and bottom of ant nest, there is wingless adult and winging...