进口原木携带的截材小蠹属昆虫的检疫鉴定

本文介绍了我国口岸进口木材中多次截获的截材小蠹属(Truncaudum Hulcr and Cognato,2010)昆虫,对口岸常见该属具有重要经济和检疫意义的种类,提供重要形态特征描述和图片,并对该属所有种类进行简单介绍,包括重要鉴别特征、分布等信息,以期为口岸一线的检测鉴定提供参考。     

东南亚木材上的6种截面材小蠹

本文记述了中国和日本各口岸从东南亚木材上截获的6种截面材小蠹。描述了各种类的形态特征,并编制了相应的检索表,可为进口木材常见材小蠹的检疫鉴定提供参考。     

进口原木携带的脊间小蠹属昆虫的检疫鉴定

本文介绍了我国口岸进口木材中多次截获的脊间小蠹属(Arixyleborus Hopkins,1915)有害昆虫,对该属的分类地位及属内种类修订的新进展进行论述,对口岸截获的该属具有重要经济和检疫意义的种类,提供重要鉴别特征和图片,并对该属所有种类进行简单介绍,包括重要鉴别特征、分布、寄主等信息,希望能为口岸一线的检测鉴定提供参考。     

海小蠹属几个重要的花色种类

关于海小蠹属（Hylesinus Fabricius）作者已在《植物检疫》第20卷第6期介绍过4个一色（黑色至黑褐色）种类,限于篇幅,本文将在此另行介绍海小蠹属的5个花色种类。为了便于鉴别金属种类,本文将海小蠹属已被介绍过的4个一色种类和现在将要介绍的5个花色种类统一列在检索表中以供检疫时参考。     

中国荔枝新害虫—茶材小蠹的初步研究

前言茶材小(?)Xyleborus fornicalus 又名茶枝小蠹,属鞘翅目小蠹科材小蠹属。本文对该虫的生物学、发生特点及防治进行研究如下: 一、为害与形态为害该虫钻蛀荔枝的枝、干,直径2厘米左右的枝条最易受害。受害外部为一直径约2毫米的小圆孔,孔口常有木屑堆积;内观多为一圆环状水平坑道,深达木质部,     

北美地区常见4种齿小蠹属昆虫的检疫鉴定

齿小蠹属昆虫作为小蠹科昆虫种类较多的一个属,是重要的林木蛀干害虫。近年来,从北美地区进境木材、木质包装上截获齿小蠹属昆虫的种类、数量均增长迅速,准确的种类鉴定对防止该类害虫传入我国具有重要意义。本文对我国口岸近期截获频率较多的4种齿小蠹进行描述,并列出北美地区齿小蠹属常见种类的检索表,以期为口岸技术人员提供检疫鉴定的基础资料。     

成都地区发现材小蠹危害葡萄

近年来, 成都市龙泉驿区发现不少葡萄树上有许多虫蛀孔洞.据龙泉驿区植保站介绍, 这种虫几年前已有农户反映, 当时鉴定为小蠹科害虫, 由于发生零星, 故未引起重视.2003年以来由于不少农户反映较大, 故对此害虫进行了调查研究.     

进口原木携带的唐氏小蠹属昆虫的检疫鉴定

本文介绍了我国口岸进口木材中多次截获的唐氏小蠹属(Debus Hulcr and Cognato,2010)有害昆虫,对口岸常见该属具有重要经济和检疫意义的种类,提供重要鉴别特征描述和图片,并对该属所有种类进行简单介绍,包括重要鉴别特征、寄主、分布等信息,希望能为口岸一线的检测鉴定提供参考。     

松树材小蠹Xyleborus festivus Eichhoff (Scolytinae: Xyleborini)在中国南方的发生及其共生真菌研究

松树材小蠹Xyleborus festivus Eichhoff是东南亚地区为害松属植物的重要害虫,为掌握该虫在中国南方的发生情况及其共生真菌种类,本文通过检视标本馆标本和野外调查,并对采集的标本携带的真菌进行分类培养,利用分子生物学的方法对获得的真菌种类进行鉴定。本文提供了松树材小蠹的鉴别特征,记录了其在中国南方的发生情况、地理分布、寄主等,同时分离出共生真菌7种,并确定其储菌囊中的优势真菌——Raffaelea cf.arxii。松树材小蠹对寄主植物的危害极有可能引起或加速其他病害发生,应引起相关部门的重视。     

Responses of avocado to laurel wilt,caused by Raffaelea lauricola

Laurel wilt, caused by Raffaelea lauricola, threatens native and non‐native species in the Lauraceae in the south‐eastern USA. Avocado, Persea americana, is the most important agricultural suscept of laurel wilt. Grafted plants (clonal scions on seedling rootstocks) of 24 cultivars were screened against the disease in the field from 2008 to 2010. Disease was induced with either mycelial plugs or conidial suspensions of R. lauricola. There were significant differences in the severity of disease that developed on different cultivars, and West Indian cultivars were most susceptible (P < 0·05). Simmonds, a West Indian cultivar that comprises 35% of the commercial production in Florida, was consistently susceptible and was used as a standard genotype in different studies. Disease severity increased significantly on cv. Simmonds as plant size (stem diameter) increased (P < 0·0042). In greenhouse studies, internal (sapwood) and external disease severities on cv. Simmonds were correlated (P < 0·0001), and a threshold was evident, in that external symptoms developed only after moderately severe symptoms had developed internally. Latent infection was uncommon; R. lauricola was usually isolated on a semiselective medium or detected via qPCR only from discoloured xylem of inoculated cv. Simmonds. As basipetal movement of the pathogen was common, its movement among trees via root grafts is probable. Greater understanding is needed of the movement of R. lauricola in naturally and artificially infected trees, and whether sufficient tolerance exists in avocado to assist in the management of this important new disease.     

First record of Xylosandrus germanus (Blandford) (Coleoptera: Curculionidae,Scolytinae) in the Mediterranean scrubland in Southern Italy,and its co-presence with the co-generic species X. compactus (Eichhoff) and X. crassiusculus (Motschulsky)

In the Circeo National Park (Italy), a survey assessed the occurrence of the ambrosia beetle Xylosandrus germanus in addition to the conspecifics X. compactus and X. crassiusculus. This is the first report in Europe of the co-presence of three Xylosandrus species, in an evergreen Mediterranean maquis dominated by holm oaks (Quercus ilex L.). Although no damage caused by X. germanus has been observed, the richness of plant species in the Circeo National Park may allow the establishment of this highly polyphagous ambrosia beetle, possibly endangering this native ecosystem. The dominance in the associated fungal community of Ambrosiella grosmanniae and Fusarium spp. reflects a stable symbiotic relationship of these taxa with X. germanus.     

The utility of Trichoderma spp. isolates to control of Xylosandrus germanus Blandford (Coleoptera: Curculionidae: Scolytinae)

Journal of Plant Diseases and Protection - The invasive ambrosia beetle, Xylosandrus germanus Blandford (Coleoptera: Curculionidae: Scolytinae), is a serious pest of hazelnut in Turkey, which is...     

湖南发现两种新的茶树象甲害虫

在湖南省桃源县乌云界国家级自然保护区发现2种茶树新害虫：棕长颈卷叶象甲Paratrachelophorus nodicornis和鸟粪象甲Mesalcidodes trifidus。本文对其成虫形态特征和为害症状进行了简要记述。