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J. Meltzer 《European journal of plant pathology / European Foundation for Plant Pathology》1972,78(3):77-88
The antibiotic MYC 8005, known as an acaricide, appeared to possess strong growth inhibiting properties, not only in immature stages of spider mites but also in larvae of several insect species. Adult mites and insects seemed not to be affected. However, the fecundity of femaleTetranychus cinnabarinus was strongly reduced by deposits of MYC 8005 on the leaves of bean plants. The feeding of adult houseflies and Colorado potato beetles with MYC 8005 resulted in complete or almost complete sterilization of the insects. The sterilizing effect appeared to be caused by inhibition of maturing processes, in particular of yolk formation in the eggs, whereas follicles looked normal. These facts, and the strong reduction of the fat body in treated insects, suggest that the lipid and protein metabolism are disturbed by MYC 8005. 相似文献
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V Cerny 《Folia parasitologica》1975,22(3):233-240
Seven new species of feather mites belonging to families Analgidae, Falculiferidae, Pterolichidae, Pteronyssidae and Xolalgidae are described from Columbiformes, Cuculiformes, Piciformes and Passeriformes of Surinam. 相似文献
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Diflubenzuron was absorbed and metabolised relatively slowly by the two-spotted spider mite Tetrunychus urticae Koch. Diflubenzuron metabolites, tentatively identified by coincident chromatography with reference standards, included 4- chlorophenylurea, 2, 6-difluorobenzoic acid, 4-chloroformanilide, 2, 6-difluoro-benzamide, and two compounds monohydroxylated in the chloroaniline moiety. There was little absorption of diflubenzuron when applied topically to leaves of bean plants. However, there was translocation of radioactive material when diflubenzuron was injected into the stern. In this case, the radioactivity, which was confined largely to vascular tissue, apparently moved acropetally but exhibited very little or no basipetal movement. Bean plants metabolised injected diflubenzuron, and certain of the metabolites were similar to those isolated from mites. 相似文献
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2006年,经2次本底资源调查共得到广州市植绥螨科5属28种,其中尼氏真绥螨是优势种,占采集标本总数的45%。本文还对一些在生物防治上有利用价值的种类作了重点介绍。 相似文献
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Following the appearance of inflorescence malformations on mango trees in some orchards in Israel, a survey was carried out
of the presence of Eriophyid mites on mango, and their possible effect on inflorescence malformation was studied. Two Eriophyid
species were recorded for the first time from this area. One of them,Erio-phyes mangiferae, associated with mango trees, has no direct effect on inflorescence malformation, but its interaction with another biotic
factor is not excluded. 相似文献
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The penetration and degradation of six pyrethroids were examined in the twospotted spider mite, Tetranychus urticae Koch, and the results were related to their toxicity as measured by inhibition of respiration using the Warburg technique and mortality using the slide-dip bioassay. FMC-54800 [1,1′-biphenyl-3ylmethyl cis-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate] was the most toxic pyrethroid to the mites based on both respiration and mortality studies. It and flucythrinate had the highest pharmacokinetic efficiency as determined by delivery and maintenance of internal levels of parent compounds. Permethrin, fenvalerate, and fluvalinate were intermediate in pharmacokinetic efficiency, whereas cypermethrin was significantly lower. The highest intrinsic activity, as estimated by the percentage inhibition of respiration per microgram of internal parent, was possessed by cypermethrin and FMC-54800. Fenvalerate and fluvalinate had intermediate levels, while permethrin and flucythrinate had significantly lower capacities to inhibit respiration. The combination of relatively high pharmacokinetic efficiency and intrinsic activity of FMC-54800 appeared to be responsible for its high toxicity. In addition to these findings, differences in the kinetics for cis and trans isomers were observed for permethrin but not cypermethrin. This study has yielded evidence that acaricidal activity of pyrethroids can be enhanced by optimizing the structure for increased pharmacokinetic efficiency and increased intrinsic activity. 相似文献
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The effects of Neemgard, an acaricidal and fungicidal formulation obtained from neem (Azadirachta indica) seed kernels, on the phytophagous miteTetranychus cinnabarinus, the predacious mitePhytoseiulus persimilis, and the predatory spiderChiracanthium mildei, were investigated in laboratory experiments. Neemgard was highly toxic toT. cinnabarinus but had no toxic effect onC. mildei orP. persimilis. Another neem formulation—the insecticidal Neemix 45—caused conspicuous repellency, but no mortality, inT. cinnabarinus. 相似文献
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C. G. Athanassiou N. E. Paly vos P. A. Eliopoulos G. T. Papadoulis 《Phytoparasitica》2001,29(5):379-392
Studies were conducted in a flat storeroom in central Greece, filled with approx. 90 tons of wheat, in order to evaluate insect
and mite species abundance, and changes in population density and distribution among sampling units and locations. The surface
of the grain bulk was divided into two sampling zones: the central and the peripheral (edge). At 10-day intervals, five wheat
samples were taken from the central zone and eight from the peripheral zone, with a non-partitioned grain trier (1.6-m length,
250-g capacity). Fifteen insect species and 12 mite taxa were found during the sampling period, (June 1999–Feb. 2000). The
most abundant insect species wereSitophilus oryzae (L.),Cryptolestes ferrugineux (Stephens),Tribolium castaneum (Herbst) andLatheticus oryzae Waterhouse; the most abundant mite species wereAcarus siro L.,Lepidoglyphus destructor (Shrank), and the predatorsBlattisocius tarsalis (Berlese) andB. keegani Fox. Grain temperature decreased during the storage period, more slowly in the central than peripheral zone; grain moisture
content increased. The highest population densities for both insects and mites were recorded during September and October.
The most numerous species of insects and mites showed an aggregated spatial pattern, as indicated by Iwao’s Patchiness Regression. 相似文献
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12种橘园常用农药对3种捕食螨的毒力 总被引：2，自引：0，他引：2
采用玻片浸渍法测定了12种药剂对3种捕食螨的毒力.结果表明,在5种杀螨剂中,炔螨特的毒力最低,阿维·哒螨灵的毒力最高;在5种杀虫剂中,噻嗪酮的毒力最低,高效氯氰菊酯的毒力最高;在2种杀菌剂中,代森锰锌的毒力低于咪鲜胺.但同种药剂对不同捕食螨的毒力不同,3种捕食螨对炔螨特的敏感性依次为胡瓜钝绥螨[Amblyseius(Neoseiulus) cucumeris]＜巴氏钝绥螨[Amblyseius(N.) barkeri]＜尼氏真绥螨(Euseius nicholsi),而对阿维·哒螨灵则为尼氏真绥螨＜胡瓜钝绥螨＜巴氏钝绥螨. 相似文献
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荔枝瘿螨是为害荔枝的一类重要害虫,体型小、种类多、分布广。随着荔枝种植面积的扩大、荔枝果实和荔枝苗木的远距离运输,给荔枝瘿螨的传播创造了条件。本文主要总结了国内荔枝瘿螨的研究结果,阐明了荔枝瘿螨的种类及其分布特点;以荔枝瘤瘿螨Aceria litchii和荔枝分位瘿螨Disella litchii为例,阐述了荔枝瘿螨的生物学特性及种群动态、天敌、寄主(荔枝品种)的抗虫(瘿螨)性、种群监测技术、防治措施等方面的研究进展。结合产业发展,指出生产中亟待解决的问题和研究方向,并提出建立“以农业防治为基础、生物防治相结合、化学防控为辅助”的荔枝瘿螨综合防控技术体系的具体措施。 相似文献
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The present study was carried out in a flat storeroom in central Greece, filled with approximately 60 tons of newly harvested
wheat, in order to evaluate the population dynamics of stored-product mites and their predators in connection with horizontal
and vertical distribution. At 15-day intervals, from July 2000 until March 2001, three replicates were taken from each sampling
point at depths of 0–40, 40–80 and 80–120 cm, with a partitioned grain trier. The sampling points were divided into two zones,
namely, central and peripheral. Air temperature, relative humidity, grain moisture and grain temperature were recorded during
the sampling period. Twenty-four mite taxa were found, the dominant species beingTyrophagus putrescentiae (Schrank) andAcaropsis docta (Berlese). The numbers of these species varied significantly in the two zones and at the three depths. More individuals were
found in the center compared with the periphery of the wheat bulk, and at the surface of the bulk than at greater depths.
The highest mite population densities for the total mite species were recorded during October–November and after the middle
of January.
http://www.phytoparasitica.org posting Nov. 4, 2005. 相似文献