نتایج جستجو برای: diaphorina citri
تعداد نتایج: 2012 فیلتر نتایج به سال:
پسیل آسیایی مرکبات، Diaphorina citri Kuwayama، یکی از آفات مهم و ناقل بیماری گرینینگ مرکبات میباشد. در این پژوهش، ویژگیهای زیستی این آفت در شرایط آزمایشگاهی و میزان پارازیتیسم آن توسط زنبور Psyllaephagus stenopsyllae (Tachikawa) مورد بررسی قرار گرفت. طول دوره قبل از تخمگذاری و دوره تخمگذاری بهترتیب 51/0 ± 9 و 23/0 ± 7/15 روز بود. میانگین تعداد تخم گذاشتهشده توسط حشره ماده 7/50 ± 25/230 عد...
By 2014, huanglongbing (HLB), the most destructive disease of citrus, and its insect vector, the Asian citrus psyllid (ACP), Diaphorina citri (Kuwayama), became established in all major citrus-growing regions of the world, including the United States, with the exception of California. At present, application of insecticides is the most widely followed option for reducing ACP populations, while ...
Huanglongbing (HLB) is a bacterial infection of citrus trees transmitted by the Asian citrus psyllid Diaphorina citri. Mitigation of HLB has focused on spraying of insecticides to reduce the psyllid population and removal of trees when they first show symptoms of the disease. These interventions have been only marginally effective, because symptoms of HLB do not appear on leaves for months to y...
شناسایی دشمنان طبیعی پسیل آسیایی مرکبات (Diaphorina citri Kuwayama (Hem., Psyllidae در استان هرمزگان
پسیل آسیایی مرکبات، Diaphorina citri یکی از مهمترین آفات مرکبات در کشورهای جنوب آسیا است. در ایران، این آفت در استانهای هرمزگان، سیستانوبلوچستان و کرمان گسترش داشته و از طریق مکیدن شیره گیاهی قادر به انتقال باکتری Liberobacter asiaticum عامل بیماری خطرناک گرینینگ مرکبات است. در این تحقیق فون دشمنان طبیعی پسیل آسیاییD. citri در استان هرمزگان مورد بررسی قرار گرفت. در این مطالعه دو گونه زنبور...
Infection of an Insect Vector with a Bacterial Plant Pathogen Increases Its Propensity for Dispersal
The spread of vector-transmitted pathogens relies on complex interactions between host, vector and pathogen. In sessile plant pathosystems, the spread of a pathogen highly depends on the movement and mobility of the vector. However, questions remain as to whether and how pathogen-induced vector manipulations may affect the spread of a plant pathogen. Here we report for the first time that infec...
Although specialist herbivorous insects are guided by innate responses to host plant cues, host plant preference may be influenced by experience and is not dictated by instinct alone. The effect of learning on host plant preference was examined in the Asian citrus psyllid, Diaphorina citri; vector of the causal agent of citrus greening disease or huanglongbing. We investigated: a) whether devel...
Diaphorina citri Kuwayama (Hemiptera: Psyllidae) is an important worldwide pest of citrus that vectors bacteria (Candidatus Liberibacter spp.) responsible for huanglongbing (citrus greening disease). We examined the behavioral responses of mated and unmated D. citri of both sexes to odors from host plants in a Y-tube olfactometer, with and without visual cues. The host plants tested were 'Dunca...
Diaphorina citriKuwayama (Hemiptera: Psyllidae) carriesCandidatus liberibacter spp., the putative causal agents of Huanglongbing. D. citri reproduces and develops only on the ßushing shoots of its rutaceous host plants. Here we examined whetherD. citri is attracted to host plant odors and a mixture of synthetic terpenes. Tests conducted in a vertically oriented Y-tube olfactometer showed that b...
Antagonistic interactions between the nymphal parasitoid, Tamarixia radiata Waterston (Hymenoptera: Eulophidae), and the ARSEF 3581 strain of the entomopathogenic fungus, Isaria fumosorosea Wize (Hypocreales: Cordycipitaceae), could disrupt biological control of the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae). Three interactions were evaluated under laboratory conditio...
Diverse insect species harbor symbiotic bacteria, which play important roles such as provisioning nutrients and providing defense against natural enemies [1-6]. Whereas nutritional symbioses are often indispensable for both partners, defensive symbioses tend to be of a facultative nature [1-12]. The Asian citrus psyllid Diaphorina citri is a notorious agricultural pest that transmits Liberibact...
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