真殖线虫属一新种记述(线虫纲:尖尾科)

本文记述了源于西藏高寒山区田鼠大肠内一寄生线虫新种,隶属线虫纲、尖尾科、真殖属该虫种与同属原有种之间主要鉴别特征在于;a.孔不分层;b.咽大似碗状,接于口底;c.头端具有4枚乳突;d.泄殖孔外缘为5对乳突;e.虫卵偏小(0.080～0.083 mm×0.038～0.040mm)。一端有一小卵栓。     

Different cross-reactivity of human and rodent sera to Tula virus and Puumala virus

Tula virus (TULV) and Puumala virus (PUUV) are hantaviruses carried by the bank vole (Myodes glareolus) and European common vole (Microtus arvalis), respectively. PUUV is a causative agent of hemorrhagic fever with renal syndrome (HFRS), while TULV is thought to be apathogenic to humans. The N-terminal regions of the N proteins from TULV and PUUV were expressed and applied as enzyme-linked immunosorbent assay (ELISA) antigens. Colonized Japanese grass voles (Microtus montebelli) and BALB/c mice were used for experimental inoculation of the vole-borne hantaviruses TULV and PUUV. Voles and mice showed significant antibody production toward both viruses, but these antisera showed little cross-reactivity between TULV and PUUV in the immunofluorescence antibody assay and ELISA. In contrast, sera from patients with HFRS caused by PUUV exhibited high cross-reactivity against the TULV antigen, and sera from a natural rodent reservoir showed moderate cross-reactivity against the heterologous antigen, indicating that the antigenic cross-reactivity between TULV and PUUV differs in sera from rodents and humans.     

洞庭湖区防鼠墙对东方田鼠防治效果调查

东方田鼠（Microtus fortis Buechner）是洞庭湖区重要的害鼠种类,在数量暴发年份,在由湖滩被迫迁入农田过程中会对农作物造成毁灭性的危害,因此修筑防鼠墙以阻断迁移通路是最为有效的防治手段。为了解防鼠墙的防治效果,在2012年4月和7月分别在湖滩和对应的堤内农田进行调查。结果有防鼠墙的堤垸内农田的东方田鼠密度为0.52%,明显低于经过人工捕杀和药物灭鼠后无防鼠墙的农田1.76%（χ2=3.900,P=0.048）;迁入农田后的密度下降幅度为98.53%,明显高于无防鼠墙堤垸的86.61%（χ2=11.060,P=0.01）。充分显示了防鼠墙防治效果,因此建议大力推广。