Lange Carlos E, Johny Shajahan, Baker Michael D, Whitman Douglas W, Solter Leellen F
Scientific Investigations Commission of Buenos Aires province, CCT La Plata CONICET, Center for Parasitological Studies and Vectors (CEPAVE), La Plata National University, Calle 584, La Plata (1900), Argentina.
J Parasitol. 2009 Aug;95(4):976-86. doi: 10.1645/GE-1923.1.
We describe a new microsporidian species, Encephalitozoon romaleae n. sp., isolated from an invertebrate host, the grasshopper Romalea microptera, collected near Weeks Island, Louisiana, and Jacksonville, Florida. This microsporidian is characterized by specificity to the gastric caecae and midgut tissues of the host and a life cycle that is nearly identical to that of Encephalitozoon hellem and Encephalitozoon cuniculi. Mature spores are larger (3.97 x 1.95 microm) than those of other Encephalitozoon species. Polar filament coils number 7 to 8 in a single row. Analysis of the small subunit (SSU) rDNA shows that E. romaleae fits well into the Encephalitozoon group and is a sister taxon to E. hellem. This is the first Encephalitozoon species that has been shown to complete its life cycle in an invertebrate host.
我们描述了一种新的微孢子虫物种，罗氏脑胞内原虫（Encephalitozoon romaleae n. sp.），它是从一种无脊椎动物宿主——在路易斯安那州威克斯岛和佛罗里达州杰克逊维尔附近采集的蝗虫罗氏蝗（Romalea microptera）中分离出来的。这种微孢子虫的特征在于对宿主的胃盲囊和中肠组织具有特异性，并且其生命周期与海伦脑胞内原虫（Encephalitozoon hellem）和兔脑胞内原虫（Encephalitozoon cuniculi）几乎相同。成熟孢子比其他脑胞内原虫物种的孢子更大（3.97×1.95微米）。极丝盘绕在单列中为7至8圈。对小亚基（SSU）核糖体DNA的分析表明，罗氏脑胞内原虫很好地归入脑胞内原虫属，并且是海伦脑胞内原虫的姐妹分类单元。这是首个被证明能在无脊椎动物宿主中完成其生命周期的脑胞内原虫物种。
