Study On The Bioecology And Trapping Technique Of Scolytus Seulensis Murayama And Scolytus Rugulosus (Muller)

Xinjiang is the main area producing apricot fruit, which flesh thick, jen sweet and good quality. Recent years, Xinjiang Apricot worm-eaten pest happens seriously, the local apricot resources in Xinjiang posing a grave threat. Apricot apricot Beetles invade phloem or xylem termite tunnel to damage, affecting water and nutrients apricot spread, the most serious cause tree death. Having read a large number of documents, writer of this article discussed in the apricot bark beetles morphological characteristics, distribution, occurrence, etc., while provide a basis for prevention and treatment of small worm-eaten. This article also discussed the current domestic status of prevention and control of small worm-eaten.Behavioral tests revealed that S. rugulosus was easy to be attracted to its host tree Prunus armeniaca. The volatiles emitted from different parts of host trees were collected outdoors by headspace sampling in situ and analyzed by Thermodesorption Cold Trap (TCT)-GC-MS. Two major classes of compounds, aliphatics [mainly green-leaf volatiles (GLVs)] and aldehydes, existed in the host tree species investigated. However, differences could be found with respect to a few components of the blend. The relative response value was obtained using counter-2 hexenoic-1-aldehyde as a standard. Electroantennograms from the antennae of L. rugulosus were recorded in response to 10 kinds of compounds selected from the volatiles in the headspace of apricot trees and other sources. The antennae responded strongly to the aldehydes heptanal,2-ethyl-butana and nonanal. Some EAG amplitudes were also observed to green leaf alcohols, but only small EAG amplitudes were observed to a-pinene.The preference of the Scolytus seulensis Murayama and the Scolytus rugulosus (Muller) to 6 kinds of sticky cards was carried out on Armeniaca spp. The results showed that sticky cards had different attraction on bark beetle. The biggest attractiveness colors to S. tusseu lensis M. and L. rugulosus (Muller) was black, then was red, and the rest colors had no obvious effect. It also can be seen that these two kinds of bark beetle have different happen-peak. S. seulensis M is in beginning of June and the L. rugulosus (Muller) is in the middle of July.