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Studies on Biology and Host Selection of Aprostocetus Fukutai Miwa Et Sonan

Author: ChouLanFen
Tutor: SunXuZuo
School: Shandong Agricultural University
Course: Forest Protection
Keywords: The longicorn eggs long tail Tetrastichus Mulberry longicorn Biology Host Selection Volatile substances
CLC: S476
Type: Master's thesis
Year: 2003
Downloads: 125
Quote: 1
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Abstract

The mulberry - mulberry germari - longicorn eggs long tail Tetrastichus tritrophic relationship as the basis of the longicorn eggs long tail Tetrastichus biological, parasitic selectivity and its mechanism. The results are as follows: 1. The longicorn eggs long tail Tetrastichus biological 1 year 2 generations, few complete three generations. Mature larvae in the the mulberry germari eggs overwinter, in early June the following year pupation, overwintering generation from late June to early July eclosion, the first generation adult emergence of late July to late August, the second generation adults in August In mid-to late September feathering. Its development after egg - larva - pupa - adult four stages, the room temperature, the egg stage 0.8d, 17.6d of the larval stage, pupal stage 12.3d female longevity 4.0d, duration 36.6d. The eggs were parasitized bees 19.43, average sex ratio of 1.27:1. The male and female bee can be multiple mating, the female wasp parasitic two or more than two mulberry germari fresh eggs. 2. Of the longicorn eggs long tail Tetrastichus on the host search behavior longicorn eggs the long tail Tetrastichus host search behavior research results show that the addition to the Apriona fresh eggs of Apriona germari, frass, oral secretion The different behavior of objects are able to cause the host search behavior of female wasps, female bees and different processing branches, damage the branches and with eggs branches of the mulberry germari hazards the female bees obvious host search behavior in complete branches and mechanical damage branches, but only crawling, still acts. And female bees Sang germari hazard damage branches, twigs with egg residence time was significantly longer than the residence time in complete twigs and branches of mechanical damage. In addition, the learning behavior of female bees can be obtained through contact with the odor of the host plant, learning behavior in their adult stage can effectively improve the efficiency of its search host. 3 the longicorn eggs the long tail Tetrastichus female bee mulberry twigs of different processing olfactory responses of Y-type olfactometer biological test results showed that: the female bees were no significant differences in the complete twigs and branches of mechanical damage tropism. The Sang germari hazard damage branches, spawning groove branches release volatiles the long tail Tetrastichus longicorn eggs temptation were significantly stronger than the complete branches that mulberry and damage will be different from the whole plant volatiles released thereof. With eggs groove Sang germari harm volatiles released by the injury twigs stronger on the longicorn eggs long tail Tetrastichus lure role, the release of volatiles in the mulberry twigs mechanical injury. The volatiles from this table Mingsang alternatus hazards mulberry release differs from the the mulberry was mechanical damage after the release of volatiles. lt; WP = gt; 4. affect the the longicorn eggs long tail Tetrastichus host selection factors spawning female bees whether in mulberry germari egg parasitic and host eggs fresh, naked or not, and the shape of the groove preference parasitic female bees 1 to 3 days of fresh eggs, eggs not exposed to lure female wasps parasitic only similar to the \In addition, the learning behavior of female bees can affect their host choice can be obtained through contact with the odor of host plants, the adult stage of learning behavior can effectively improve the efficiency of its search host. 5 different treatment mulberry twigs meteorological chromatography - mass spectrometry analysis of the volatiles released by the mulberry twigs, including alkanes, alkenes, alcohols, ketones, phenols, furans, etc.. Mulberry complete types of mechanical damage of the shoots volatiles branches volatiles kind of the same, but different from the relative content. After by Sang germari hazards Sang branches types of volatile substances increased material content has changed; types of mulberry twigs with fresh eggs volatiles mulberry twig injury hazards only increased by 2, the relative content also occurred changes.

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