Cone David, Marcogliese David J
Department of Biology, Saint Mary's University, Halifax, Nova Scotia, Canada.
J Parasitol. 2010 Dec;96(6):1164-7. doi: 10.1645/GE-2452.1. Epub 2010 Aug 13.
Myxobolus burti n. sp. is described from striated muscle of Notropis hudsonius (Cyprinidae) collected from localities in Lake Superior, Lake Michigan, Lake Huron, Lake St. Claire, Lake Erie, Lake Ontario, and the St. Lawrence River. Myxobolus burti is intracellular, forming thin-walled, cigar-shaped plasmodia within striated muscle cells of the body. It exhibits disporoblastic, oval spores, approximately 10 µm long, 8 µm wide, and 6 µm thick, with a length-to-width ratio of 1.3 ∶ 1. They resemble most closely those of Myxobolus bellus Kudo, 1934, and Myxobolus mutabilis Kudo, 1934, but have polar capsules unequal in length (5.3 vs. 4.7 µm) and oblique filament coils. The new parasite was not encountered in routine examination of other small-bodied fishes at collection locations and thus looks to be specific to N. hudsonius. A comparative plate of similar species encountered during surveys of these fishes in the northeast is presented to contrast the uniqueness of the new species.
伯氏粘体虫（Myxobolus burti）新种是从采自苏必利尔湖、密歇根湖、休伦湖、圣克莱尔湖、伊利湖、安大略湖以及圣劳伦斯河等地的细纹鳟（Notropis hudsonius，鲤科）的横纹肌中描述的。伯氏粘体虫寄生于细胞内，在鱼体横纹肌细胞内形成薄壁、雪茄形的孢原质团。它具有双胚性、椭圆形孢子，长约10 µm，宽8 µm，厚6 µm，长宽比为1.3∶1。它们与1934年的库多氏美丽粘体虫（Myxobolus bellus Kudo）和1934年的库多氏多变粘体虫（Myxobolus mutabilis Kudo）最为相似，但极囊长度不等（5.3 µm对4.7 µm）且丝盘呈倾斜状。在采集地点对其他小型鱼类的常规检查中未发现这种新寄生虫，因此它似乎是细纹鳟特有的。文中给出了在东北部对这些鱼类进行调查期间遇到的相似物种的对比图版，以凸显新物种的独特性。
