A new species of <Emphasis Type="Italic">Microterys</Emphasis> (Hymenoptera: Encyrtidae) from Northeast China,parasitoid of <Emphasis Type="Italic">Parthenolecanium corni</Emphasis> (Bouché) (Hemiptera: Coccidae)

A new species of Microterys Howard (Hymenoptera: Encyrtidae), M. angustus Zu, Li & Wang sp. nov., is described from China as a parasitoid of Parthenolecanium corni (Bouché) (Hemiptera: Coccidae) on Acer saccharum Marsh. and Sophora japonica Linn..     

Functional response of <Emphasis Type="Italic">Geocoris ochropterus</Emphasis> Fieber (Hemiptera: Geocoridae) to different egg densities of <Emphasis Type="Italic">Helicoverpa armigera</Emphasis> (Hübner) (Lepidoptera: Noctuidae)

The biology and predatory efficiency of Geocoris ochropterus Fieber (Hemiptera: Geocoridae) has been studied extensively against many insect pests, but information on functional response of different stages of G. ochropterus to Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is lacking so far. The functional response of different stages of G. ochropterus to varying densities of eggs of H. armigera was investigated in the laboratory at 26?±?2°C, 65?±?2% RH and 12 L: 12D. Immature stages i.e. 3rd, 4th, 5th instar and adult predator exhibited type II functional response. Handling time decreased with increasing predator’s developmental stage. Adult G. ochropterus followed by fifth instar exhibited highest egg consumption and attack rate compared to other stages. Functional response parameters indicate that the adult and fifth instar of G. ochropterus were more voracious and efficient than other juveniles and might be useful as promising biocontrol agent against H. armigera.     

A new species of <Emphasis Type="Italic">Anagyrus</Emphasis> (Hymenoptera: Encyrtidae) from China,parasitoid of <Emphasis Type="Italic">Phenacoccus solani</Emphasis> Ferris (Hemiptera: Pseudococcidae) on <Emphasis Type="Italic">Lycoris radiata</Emphasis> (L’Her.) Herb.

A new species of Anagyrus Howard (Hymenoptera: Encyrtidae), A. pseudofuscus Zu sp. nov., is described from China as a parasitoid of the mealybug, Phenacoccus solani Ferris (Hemiptera: Pseudococcidae).     

《中国经济叶蜂志(Ⅰ)》(■翅目;广腰亚目)

16开本,221页,有特征图36版510幅,彩色图4版53种。过塑封面平装本定价12.00元.本书是我国叶蜂类第一本专著。总结了作者和其他学者多年辛勤研究的成果。共记载我国广腰亚目昆虫10科198种(包括亚种)。内容包括概述、外部形态和分类三部份。在概述部份作者将生物学特性及防治方法写得比较详细;为方便查检,作者对分类特征     

Incidence and etiology of postharvest fungal diseases of loquat fruit (<Emphasis Type="Italic">Eriobotrya japonica</Emphasis> (Thunb.) Lindl. cv. ‘Algerie’) in Alacant province (Spain)

‘Algerie’ is currently the most important loquat cultivar in Spain. The incidence and etiology of postharvest diseases affecting this cultivar were determined under local conditions. Latent and wound pathogens were evaluated for two consecutive seasons on commercially grown loquats from two orchards. Healthy loquats were either surface-disinfected or artificially wounded in the rind and placed in humid chambers at 20 °C for up to 5 weeks. Additionally, decay was assessed on commercially-handled loquats stored at 5 °C for up to 20 weeks. The most frequent disease was caused by Alternaria alternata, followed by Penicillium expansum. These two pathogens were present on fruit assessed for all types of infection. Moreover, decay caused by Botrytis cinerea was abundantly observed on both wounded and cold-stored fruit, while Colletotrichum gloeosporioides was frequently found on surface-disinfected fruit. Other pathogens that were observed causing latent infection to a lesser extent included Pestalotiopsis clavispora and Diplodia seriata. Common isolates were identified by macroscopic and microscopic morphology and/or DNA amplification and sequencing. Pathogenicity of selected isolates was demonstrated by fulfilling Koch’s postulates and disease development was assessed on artificially inoculated loquats stored at either 20 or 5 °C.     

常见花蝽的种类及其生物学简记(半翅目;花蝽科)

花蝽属半翅目、花蝽科(Anthocoridae),该科种类不多,世界已知仅450种左右,但均为捕食性,一些种类亦兼食植物汁液和花粉,是农业害虫常见的天敌。花蝽体形小,体长多在2～4毫米内外;触角4节,喙3节,一般长度不超过后足基节;常有单眼;前翅具楔片,膜片无翅室,有翅脉1～4条,但一般均不明显。雌虫具针状产卵器,一般能产卵于栖息寄主植物表皮组织内,雄虫腹部后半及生殖节略弯曲向一侧,抱器常仅一边发达,另一边退化。花蝽在我国仍缺乏调查,种类记录不多,现就几年来采集所得,简记下列10种的形态特征及其生物学,供当前害虫天敌资源调查与利用参考。     

高梁丝黑穗菌(Sphacelotheca reiliana (Kühn) Clint.)的生理分化

 近五年来,高粱丝黑穗菌的一个新的生理小种在辽阳、忻县发生。它侵染抗病的杂交高粱晋杂五号等。这个小种与公主岭小种的主要区别在于对3197A及甜高粱苏马克的致病力。自1970年以来,大面积栽培亲缘单一的杂交种是导致生理小种发生与变异的原因。     

Mechanisms of induced resistance in lettuce against <Emphasis Type="Italic">Bremia lactucae</Emphasis> by DL<Emphasis Type="Bold">-</Emphasis>β<Emphasis Type="Bold">-</Emphasis>amino<Emphasis Type="Bold">-</Emphasis>butyric acid (BABA)

BABA induced local and systemic resistance in lettuce (Lactuca sativa) against the Oomycete Bremia lactucae. Structure-activity analysis showed no induced resistance by related amino-butanoic acids or β-alanine. The R-enantiomer of BABA induced resistance whereas the S-enantiomer did not, suggesting binding to a specific receptor. Other compounds known to be involved in SAR signaling, including abscisic acid, methyl-jasmonate, ethylene, sodium-salicylate and Bion® (BTH) did not induce resistance. Systemic translocation of ¹⁴C-BABA and systemic protection against downy mildew were tightly correlated. BABA did not affect spore germination, appressorium formation, or penetration of B. lactucae into the host. Epifluorescence and confocal microscopy revealed that BABA induced rapid encasement with callose of the primary infection structures of the pathogen, thus preventing it from further developing intercellular hyphae and haustoria. Invaded host cells treated with BABA did not accumulate phenolics, callose or lignin, or express HR. In contrast, cells of genetically-resistant cultivars accumulated phenolics, callose and lignin and exhibited HR within one day after inoculation. The callose synthesis inhibitor DDG did not inhibit callose encasement nor compromised the resistance induced by BABA. PR-proteins accumulated too late to be responsible for the induced resistance. DAB staining indicated that BABA induced a rapid accumulation of H₂O₂ in the penetrated epidermal host cells. Whether H₂O₂ stops the pathogen directly or via another metabolic route is not known.     

Detection of the fire blight biocontrol agent <Emphasis Type="Italic">Bacillus subtilis</Emphasis> BD170 (Biopro<Superscript>®</Superscript>) in a Swiss apple orchard

Fire blight, caused by Erwinia amylovora, is a major disease threat to apple, pear and other pome fruit worldwide. The disease is widespread in Europe and has recently become established in Switzerland. Antibiotics are the most effective controls used in North America but these are not permitted for agricultural use in most European countries. A newly registered biological control product Biopro^®, based on the antagonist Bacillus subtilis strain BD170, is being used as an alternative strategy for fire blight management. A specific molecular marker was developed for monitoring the spread of this agent on blossoms after Biopro^® spray application in a Swiss apple orchard throughout the bloom period for 2years. Direct spraying resulted in efficient primary colonisation of pistils in flowers that were open at the time of treatment. Subsequent bacterial dissemination (secondary colonisation) of flowers that were closed or at bud stage at the time of treatment was observed but was found to be dependent on the timing of treatments relative to bloom stage in the orchard. Foraging honeybees were shown to be disseminators of Biopro^®. We also report detection of the biocontrol agent in honey collected from hives where bees were exposed by placing Biopro^® at the entrance or in the hatching nest and from hives that were simply placed in sprayed orchards.     

Effects on the aphid parasitoid <Emphasis Type="BoldItalic">Aphidius ervi</Emphasis> of an insecticide (Plenum<Superscript>®</Superscript>, pymetrozine) specific to plant-sucking insects

The use of a selective insecticide is highly recommended for Integrated Pest Management programs. Plenum (a.i.: pymetrozine; Syngenta Agro), a systemic insecticide, is regarded as a good candidate for use in situations where plant-sucking insects have to be controlled and where natural enemies can play a substantial role as biological control agents. In this context, the effects of Plenum on a host–endoparasitoid relationship were investigated. Potato aphids Macrosiphum euphorbiae were reared for 4 days on an artificial diet supplemented with a low concentration of Plenum (sublethal concentration inducing 15% aphid mortality) before parasitization by the endoparasitoid Aphidius ervi. The development of A. ervi larvae was negatively affected, especially during the early stages of development, and the sex ratio of the progeny was strongly male-biased. Moreover, the host-choice experiment showed that A. ervi was not able to discriminate between control and Plenum-contaminated aphids. These results show that Plenum may not be as selective as it was previously thought to be, and the observed effects need to be considered when developing IPM systems.     

Pale tussock moth,Calliteara pudibunda (Linnaeus, 1758) (Lepidoptera; Erebidae) with a focus on its situation in Türkiye

Calliteara pudibunda is a univoltine, polyphagous and native species producing periodic outbreaks which have been recorded only in Europe so far. Its larvae feed on the foliage of beech, oak and several other deciduous and coniferous trees. It is very widespread in Eurasia. In Europe, it is found between the 34th and 60th parallels. In Türkiye, it occurs mainly in coastal regions. Its outbreak range had been thought to be confined between the 48th and 57th parallels in Europe until the last two decades when outbreaks occurred in Italy and Türkiye. Therefore, the southern limit of its outbreak range can be updated as the 36th parallel. The outbreaks recur every 20–30 years, typically continue for 1–2 years, and end suddenly. Favourable meteorological conditions and a temporary rarity of parasitoids seem to be the main causes of the outbreaks. The damage on hosts is not evident until the third larval instar. The affected hosts may grow new shoots the next spring, as the larvae usually do not attack the terminal shoots. Increment loss is possible, but it may not be economically significant per se. However, tree mortality can occur with the combined effects of other stress factors. The impact of parasitoids and predators during the outbreaks is low. There are also fungal species identified from larvae and pupae, some of which might have significant potential in pest management. Additionally, Bacillus thuringiensis var. kurstaki (Btk), polyhedrosis viruses and light traps can potentially be used, although management practices are not recommended in C. pudibunda outbreaks.     

Tachinid parasitoids (Diptera: Tachinidae) of<Emphasis Type="Italic">Spodoptera exigua</Emphasis> in cotton fields in Diyarbakır,Turkey

Tachinid parasitoidsExorista xanthaspis (Wiedemann),Nemorilla maculosa (Meigen),Palesisa maculosa (Villeneuve) andDrino imberbis (Wiedemann) were obtained fromSpodoptera exigua (Hübner) (Noctuidae) larvae collected from cotton fields in Turkey.S. exigua is a new host record forN. maculosa, andP. maculosa is recorded from Turkey for the first time. http://www.phytoparasitica.org posting July 14, 2004.     

Cucurbit downy mildew (<Emphasis Type="Italic">Pseudoperonospora cubensis</Emphasis>)—biology,ecology, epidemiology,host-pathogen interaction and control

Cucurbit downy mildew, caused by the oomycete Pseudoperonospora cubensis, is a devastating, worldwide-distributed disease of cucurbit crops in the open field and under cover. This review provides recent data on the taxonomy, biology, ecology, host range, geographic distribution and epidemiology of P. cubensis. Special attention is given to host-pathogen interactions between P. cubensis and its economically-important cucurbit hosts (Cucumis sativus, C. melo, Cucurbita pepo, C. maxima, and Citrullus lanatus); pathogenic variability in P. cubensis at the species, genus, and population levels; and, differentiation of pathotypes and races. Genetics and variability of host resistance and cellular and molecular aspects of such resistance are considered. A focus is given to methods of crop protection, including prevention and agrotechnical aspects, breeding for resistance—classical and transgenic approaches, chemical control and fungicide resistance. Novel technologies in biological and integrated control are also discussed. This review also summarizes the most important topics for future research and international collaboration.     

《生物防治(一)～(四)》介绍

为适应国内生物防治工作的需要,自1977年以来,由中国科学技术情报研究所重庆分所编辑,科学技术文献出版社重庆分社出版了《生物防治》文集,至今已出版了四集,基本上每年一本。本书的特点之一是内容比较广泛。四集共有文章67篇,除有关生物防治的进展、动     

索引(一)

(按农药登记证号)LS 200019金都尔原药批准正式登记的国外农药产品 (包括变更登记)续展临时登记的国外农药产品PD 327一2000LS 93002PD 328一2000高特克5。%悬浮剂(重量/容量)农地乐52.25%乳油(重量/容量)高特克原药精禾草克原药LS 95001PD 329一2000PD 330一2000LS 95016LS 96     

索引(一)

(按农药登记证号)批准正式登记的国外农药产品 (包括变更登记)续展临时登记的国外农药产品PD 338一2000Ls LS LSLSd孟乙人即339一2000PD 340一2000d‘n‘PD 341一2000PD 342一2000安棉特2既乳油(重量/容量)安棉特母液安民乐40%乳油(重量/容量)安民乐原药好年冬原药LS 93019LS 9