Preliminary Study Of Behavior Of Tetrancychus Vienensis Zacher

Hawthorn spider mite is the major north China orchard pests one of its most fruit production in northern China caused serious harm. In this paper, the mites Hawthorn some of the acts carried out a preliminary study.Hawthorn host of different spider mite growth and reproduction of obvious. Study author of the three hosts, in the pear on the duration of the longest, followed by peach and apple on the development of the shortest duration. At different developmental stages have different differences, the differences due to different stages of development and concrete manifestation, and in various stages of the overall difference to the development of the pear longer than Apple. Hawthorn mites spawning duration to the peach, pear, apple in a short time, the average single female spawning amount to peach, pear, less than the number of apples, the mite to life in the longest apple, pear the shortest. Hawthorn mites in different apple varieties on the growth, development and reproduction will be significant differences in tests of the three species, the duration of their Qinguan, two varieties Gala There were significant differences among both estrogen and - mite calendar period of the development in Qinguan to the development duration was longer than Gala, Fuji and on the development of both duration and the remaining duration of the significant difference does not exist. Hawthorn different apple varieties on the spider mite eggs duration, and the mite average life expectancy of the effects of estrogen spawning there are also specific expression. Spawning duration of the longest to the Gala, Fuji, Qinguan exist between the significant difference, the mite shortest life again Fuji, Gala, Qinguan exist between the significant difference, the average single female spawning of three apple varieties in the number of significant differences between, Gala, the largest number, followed by Fuji, Qinguan at least. Hawthorn mites in the study by the three apple varieties in Qinguan duration of the longest, the worst reproductive capacity.Hawthorn mites various developmental stages, the study of the three hosts of hawthorn fruit mites act in certain stages there was significant impact: David mites feeding period, the cumulative length to the feeding peach in the longest time Apple's shortest; if a mite feeding on the maximum number of the peach, pear, at least, has long feeding in the pear when feeding time was longer than Apple; if mites feeding two times higher than the pear apple, peach, when the total length to the feeding pears in a long time was longer than Apple, Peach; female adult mites feeding in the number of peach, pear, the number was more than Apple;-mite to the number of feeding Pear , significantly higher than the other two hosts, in total length, apple, peach significant differences exist between. Hawthorn mites different developmental stages inherent different host unit time crawling on the time differential: David mite period to apples, pears crawling on the Peach time was longer than the time crawling; if a mite of a pear and peach significant difference exists between If Phase 2 pear mites crawling on time was longer than apple, peach, the female mite crawling in the same time period if the mite 2, a male adult mites peach, pear crawling on time was longer than Apple.Hawthorn mites different stages in different apple varieties on the feeding behavior: David mites feeding period in the number of Fuji, Gala, Qinguan three apple varieties there is no significant difference, 1 h feeding cumulative duration, to Qin on the crown was longer than the other two; if the number of mites feeding period 1 to Gala, Qinguan the number was more than Fuji, also feeding at the same length difference, Gala, Qinguan on the cumulative time was longer than Fuji; 2 feeding period if the number of mites in Qinguan and Fujitsu significant difference between to Qinguan feeding on the number was more than Fuji, accumulated during long feeding also have the same difference, that is, in the Fujitsu Qinguan There were significant differences among the Qin dynasty When feeding on the crown-was significantly higher than Fuji; female adult mites feeding in the number and total length when feeding on Apple in three varieties are not significant differences in male adult mites feeding on the number admitting to Qinguan Fresh number was higher than Fuji and Gala, to a total of feeding, Fuji and Gala There were significant differences among to the Fujitsu-feeding was significantly higher than at the Gala. Hawthorn mites different stages in different apple varieties crawl: David mite in the period Fujitsu and Qinguan crawling on the cumulative long time was significantly longer Gala, if a mite period when the long crawl in the three apple varieties will not have significant difference; if mite Qinguan Phase 2 in the long crawl, significantly longer than Fuji, Gala; the female mite crawling with in a long time if the mite also in Phase 2 of Qinguan crawling in a long time in Fuji, Ga you crawl on the time-mite in three different apple varieties of reptiles 1 h time does not exist significant differences. Hawthorn mites with the host fruit trees in different acts statistics, in a Hawthorn mites h time Hawthorn mites various stages of the different developmental stages of crawling and feeding behavior statistics: if the number of mites feeding a maximum period to 10% - Feeding the least number of mites, David mites feeding period up to a total duration, the shortest period for feeding-mite, mite crawling-the longest time, female mite crawling shortest time.Hawthorn after fertilization of the female mite mites, spawning location to the surface structure and individual Yebei density constraints. Fertilized female mite usually faster to find spawning location. The population density is low, female mite Geranyl generally located in or near the back of the second part of the main vein eggs, does not carry out long distance transfer. Female mite is the main radiation status will begin its eggs in its position around mites will not be easily cross-spawning the main vein. Single leaf mite high density of the individual when the transfer occurred, and the mites transfer from the nearest, that is the shortest distance to find a suitable position can be when spawning location. When transferred to the mites without leaves, still single leaf on the main vein at the base of both sides of the best settlements. Apple Yaozhu Hawthorn mites on the rise in the breeding process, with the population increase in the number of leaves are increasingly severe damage to the nutritional quality of subsequent rapid decline, thereby affecting hawthorn spider mite population in sharp decline. Hawthorn mites female mite in the distribution of apple seedlings were gathered type, aggregation of mites in the case of low volume increase with the population on a downward trend, and when the latter part of the overall reduction of mites, and aggregation of the increase.