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Studies on the whitefly Aleurotuberculatus takahashi and the cocciellid Delphastus catalinae

Author: FuJianZuo
Tutor: HuangJian
School: Fujian Agriculture and Forestry University
Course: Agricultural Entomology and Pest Control
Keywords: Gao tumor whitefly Black ladybug Biological characteristics Large population
CLC: S476.2
Type: Master's thesis
Year: 2000
Downloads: 80
Quote: 0
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Abstract


Gao the tumor whitefly (Aleurotuberculatus, Takahashi) Fuzhou jasmine, citrus pests, serious in recent years, especially a serious impact on Jasmine production. However, Gao tumor whitefly can be used as the black ladybug artificial propagation host. Therefore, this the whitefly Gao tumor morphological characteristics, biological characteristics, the impact of temperature on the developmental rate, chemical insecticides to them the lethal whitefly host captivity, to explore Gao tumor whitefly for a large number of food-stuffs breeding the predatory enemies - black ladybug (Delphastus catalinae). The paper by Gao tumor whitefly morphology, biological characteristics, defined the morphological characteristics of the of Gao tumor in different stages of the whitefly, major damage performance, habits and insect emergence rhythm, reproductive characteristics. Whitefly developmental rate of the different temperatures Gao tumor measurement results, Degree Days linear model simulation, derived of Gao tumor whitefly instars developmental threshold temperature: eggs of 8.30 ° C, first instar nymphs 6.46 ° C, second instar nymphs of 7.71 ° C, third instar nymph 7.12 ° C, fourth instar nymphs - to be pupa 7.68 ° C, spawning pre-7.90 ° C, generations of 7.64 ° C. Determination of pesticides on Gao the whitefly tumor efficacy results show that the optional 90% faster WP, 3% DECIS EC as a field control whitefly adults Pharmacy: 18% Bisultap 90% fast-WP, 10% the Dan WP, 10% FASTAC EC as agents to combat whitefly nymphs. Of whitefly breeding methods, initially clear simple and feasible, effective breeding methods, to provide a basis for the large population of whitefly. The egg storage test showed that whitefly eggs under conditions of 10 ° C can use the method of storing 5-10 days to control whitefly breeding speed, black ladybugs and at the same time as the short-term foodstuff Standby. Black ladybug (Delphastus catalinae) the important natural enemies of the whitefly pests. Native to North America, from the United Kingdom in 1996 after the introduction of artificial breeding of black ladybug with Gao tumor whitefly. This paper studies the different developmental stages of the morphological characteristics of the black ladybug, clear black ladybug living habits, developmental characteristics, reproductive characteristics, and provides an important theoretical basis for the large population of black ladybug and effective use. Clear Gao tumor whitefly as foodstuffs under the conditions of the black ladybug instars developmental duration and effective accumulated temperature, by mathematical simulation the duration prediction equation, the black ladybug regular quantitative breeding reference Fujian Journal of Agriculture and Forestry University Gao tumor whitefly and its predatory natural enemies the study summaries basis of the small black insects floating. Black ladybug on food selectivity the blooms constraints. Studies on predation clear black ladybug obvious preference of the whitefly eggs, and artificial propagation can guide the choice of foodstuffs intended for pupae do not like. TESTING black ladybug different instars of whitefly eggs day almost predation and insect total of prey, to provide guidance for the black ladybug demand for foodstuffs and foodstuffs reserve. The interfering reaction results show that the black ladybug density on predation of interference. Black ladybug breeding methods are mainly two bottles of dish good wife moved to the breeding methods and greenhouse breeding. Large population of concept test breeding and research base. Can provide a reference for a large number of black ladybug breeding.

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CLC: > Agricultural Sciences > Plant Protection > A variety of control methods > Biological control > The use of predatory insects
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