The method for pest risk analysis was used to make the potential risk analysis and assessment to the 8 Bursaphelenchus species found in the pines in Yuyao, Ningbao, and the corresponding risk management strategies were put forward.
宁波出入境检验检疫局植检实验室在对本地热处理企业线虫处理效果进行监测时,从一批采自余姚四明山林场的黄山松(Pinus tai wanensi)木包装中截获一种伞滑刃属线虫.对该线虫进行培养、形态学观察、测量以及分子研究,鉴定为程氏伞滑刃线虫(Bursaphelenchus chengiLi,Trinh,Waeyenberge&Moens,2008).该线虫属abietinus组,侧区有2条侧线,雄虫交合刺成对,强壮,长约18～22μm,末端约1/3处强烈向腹面弯曲.雌虫尾端略向腹面弯曲,末端钝圆或尖,有时有不规则的尾尖突.该线虫与树皮象伞滑刃线虫(B.hylobianum)、安东尼伞滑刃线虫(B.antoniae)在形态上十分接近,但ITS-RFLP图谱以及序列分析结果有明显差异.目前仅南京口岸曾从来自我国台湾的木质包装中截获该线虫.
[ Objective] The paper was to observe Helicotylenchus digonicus by scanning electron microscope （SEM）. [ Method ] H. digonicus collected from Changxing of Zhejiang Province was observed under scanning electron microscope, and its morphological structure was confmned under optical microscope. [ Resuit]The nematode specimens fixed by glutaraldehyde and osmium tetroxide and prepared by critical point drying were unmodified and unshrinkable with clear mor- phological structure, which could be scanned very well by scanning electron microscope. [ Conclusion ] The study provided reference for study and control of H. digonicus.
[Objective] The aim was to master the distribution of Calyptratae in Ning-bo. [Method] The species and distribution of the Calyptratae in Ningbo were studied using the cage trap and butterfly nets method from 2010 to 2013. [Result] The re-sults showed that Calyptratae of 82 species, 45 genera, 6 families were recognized in Ningbo. The characters of the faunistic distribution were discussed. [Conclusion] The research indicated that the species of Calyptratae are diversified in Ningbo.
宁波出入境检验检疫局植检实验室在1份来自俄罗斯的落叶松原木中截获一种伞滑刃线虫,经形态学观察、测量,PCR-RFLP图谱比对,鉴定为欧洲型拟松材线虫(Bursaphelenchus mucronatus Mamiya et al.,1979)。从原木中截获的线虫特别细长(雌虫和雄虫a值分别为53和57),且交合刺较小(长约18μm)。经灰葡萄孢培养后,其形态特征与相关描述一致。这表明寄主和环境等因素对线虫的形态特征有较大影响,应在一致的培养环境下进行形态观察和描述,PCR-RFLP方法是伞滑刃属线虫鉴定有效的辅助手段。
