Study On Main Ecology Character And Control Of Red Imported Fire Ant (Solenopsis Invicta Buren)

Red imported fire ant Solenopsis invicta Buren, a native species of Parana River in South America,was a dangerous pest and was listed in l00 most dangerous alien species. In this study, the Jinjiang and Xiamen of Fujian Province, which areas the Solenopsis invicta Buren invaded, research of the spatial distribution of red imported fire ant, nest structure, marital dynamics, as well as marital dynamic fly control technology. And we has carried out the preliminary study of the invasion prosperous ant in Jinjiang to the other arthropod community multiplicity influence, which provides the scientific basis for the prosperous ant's prevention and control work. The main findings are as follows:(1)Experiments are carried out in different habitats in the invasion areas, with the increasing of the red imported fire ant, the local ant communities and the types of arthropod community are significantly reduced; conversely, if the red imported fire ants become weakening, the local arthropod communities will be slowly recovery and becoming the dominant species gradually, and its type and quantity are also slowly increased.(2)Through digging the nest, we find that the volume of the anthill has a certain correlation with its'diameter and the distance of the main tunnel(contain the vertical distance and the horizontal distance). We also investigated the proportion of the every grade of the ant group by the sampling method, in the results, work ants accounted for over 90 percent of the total number; each ant occupied 0.05 cubic meters of space in a nest of ants.(3)Whether the winged ants to nuptial flight or not, it mainly depends on humidity of the land and the temperature, the land humidity must be over 80%, and the temperature is above 21℃. The marriage flying is mainly happened from 10:00 to 15:00 during a day, and the time from 10:00 to 12:00 is the peak time. The number of the female ants is nearly equal to the male ants in the nuptial flying.(4)Through the use of two different types of pharmaceutical(contact and poisonous baits type ), we carried out in the field of application of three different methods. The experimental results proved that the control effect of these three methods for the prevention of fire ants was second stage processing method (98.6%) > trap method (97.4%) > irrigation nest (93.0%).