| Phloeosinus aubei is one of the main destructive insect of thuja trees. Theinsects eat tree trucks. They reproduce one generation every year in Qufu andMountain Tai. They live in winter by larvae or adults. This paper studiedaggregation pheromone of the pest; the effect of temperature on thedevelopment, survive and propagation of Phloeosinus aubei; predation ofTillus notatus adult on Pholeosinus aubei; spatial distribution pattern and itscontrol. The main conclusion are as follows.1 The studies on attration of different content aggregation pheromoneshowed , the bodies of the adult, excreta, the trucks of cypress trees and theeffluent of cypress trees can release aggregation pheromone to gather adults ofthe same species. They have high attraction activity and the effluent ofcypress trees is the best with the seduction rate of 89.7% in 30 min, followedby the attration rate of the adult bodies, excreta, three kinds of trucks ofcypress trees , 83.8%,69.2%,50%,46.2%and 32.1%, respectively. Thepheromone released from the trucks of Cunning hamia lanceolata (Lamb.)Hook has little effects on Phloeasinus aubei, with the attration rate of 7.7%.2 In the studies of the effect of temperature to the development, surviveand propagation of Phloeasinus aubei, took the regression relations betweenthe developmental period or rate of Phloeasinus aubei Perris to fit quadraticparabola; determined the developmental zero and effective cumulativetemperature , applied the life table technique to set up time-specific life tableand age-specific life table.2. 1 The opening of the quadratic parabola between developmentalperiod and temperature was up , the opening of the quadratic parabola betweendevelopmental rate and temperature was downward. At 22.5℃, developmentalperiods reached the lowest, and developmental rate reached the fastest. 2. 2 At the range of 15 ~ 25℃, all stages survival rate of Phloeasinusaubei reached the peak at 22.5℃, when temperatures were higher or lowerthan 22.5℃, all stages livabilities decreased evidently. 2. 3 Total fecundity one female adult ran to the peak at 22.5℃, 73.7eggs. The developmental period also came at the highest at 22.5℃. Theaverage oviposition by one female adult a day is 1.1 ~ 2.5 eggs. 2. 4 At 22.5 ℃, the adults life was the longest, 33.5 d, whentemperatures were higher or lower than 22.5℃, the adults life decreased , andthe shortest at 25℃, 21.2 d. 2. 5 Calculated the developmental zero and effective cumulativetemperature by two methods, such as linear regression method andstraight-way optimum method. the effective cumulative temperature of larvawas the most , and the developmental zero of larva was the lowest at the fourstages . 2. 6 By means of setting up two types of life table , we found that therelations between the life parameters of experimental population andtemperature: the life expectancy of all ages assumed falling tendency withincrease of ages; R0, rm, λand I all came to the maximum at 22.5℃, p.d.t ranto the minimum correspondingly. In the light of survival rate, oviposition byone female adult a day, life span, R0 and I, the optimum temperatures fordevelopment were obtained, 17.5~22.5℃. 3 Laboratory studies showed that the functional response of Tillusnotatus adult to Phloeosinus aubel adult and the mutural interference amongTillus notatus adults. The functional response belongs to HollingⅡtype andthe model is Na = 0.4357N .The mutural interference can be described by 1+ 0.001372NHassell & Varley′s model and Beddington′s model as E=0.4221P-0.5903 andE = 0.3934 ,respestively. Both models demonstrated that the searching 0.6359 + 0.3641Pefficiency declined with the increase of Tillus notatus density. The relation of...
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