Azevedo C, Matos E
Department of Cell Biology, University of Oporto, Porto, Portugal.
J Eukaryot Microbiol. 1995 Sep-Oct;42(5):515-8. doi: 10.1111/j.1550-7408.1995.tb05898.x.
A new species of myxosporean from the gill filaments of the freshwater teleost fish, Acestrohynchus falcatus collected in the Amazon river is described from light and transmission electron microscope observations. The mature spores (total length 32.3 [30.7-35.1] micron) and all developmental stages were found in the same sporogonic plasmodium. The ellipsoidal spore body consists of 2 unequal shell valves adhering together along the suture lines. Each valve, tapering as a caudal projection, forms a long tail (length 20.5 [18.0-21.7] micron). The tail was surrounded by a homogeneous sheath on its length. The polar capsules measuring 3.1 x 1.2 micron contain 3-4 coils of the polar filament. All surfaces of the immature and mature spores were surrounded by a closely adherent homogenous structural sheath, mainly thicker around the tails. The taxonomic affinities of this parasite to other species are discussed.
通过光学显微镜和透射电子显微镜观察，描述了一种采自亚马逊河的淡水硬骨鱼镰状无齿脂鲤鳃丝的新粘孢子虫物种。在同一个孢子生殖的多核体中发现了成熟孢子（全长32.3[30.7 - 35.1]微米）以及所有发育阶段。椭圆形的孢子体由沿着缝线粘连在一起的2个不等的壳瓣组成。每个壳瓣向尾端逐渐变细形成一条长尾巴（长度20.5[18.0 - 21.7]微米）。尾巴在其长度上被一层均匀的鞘所包围。极囊大小为3.1×1.2微米，包含3 - 4圈极丝。未成熟和成熟孢子的所有表面都被一层紧密附着的均匀结构鞘所包围，尾巴周围的鞘主要更厚。讨论了这种寄生虫与其他物种的分类学亲缘关系。
