Ditrich O, Giboda M, Scholz T, Beer S A
Institute of Parasitology, Czechoslovak Academy of Sciences, Ceské Budĕjovice.
Folia Parasitol (Praha). 1992;39(2):123-32.
The egg morphology of the following medically important small flukes from Southeast Asia and Far East were studied: Opisthorchis viverrini, Clonorchis sinensis (Opisthorchiidae), Haplorchis taichui, H. pumilio, H. yokogawai, Stellantchasmus falcatus and Metagonimus sp. (Heterophydiae). This study revealed a great intraspecific variability and interspecific similarity in size and shape of eggs. The eggs shape does not seem to be suitable for species identification. On the other hand, biometrical analysis of egg size enabled us to divide eggs from the species studied into four distinct groups according to the Faust-Meleney index (FMI) characterizing egg size rather than the length and width of eggs. The surface structures of eggs, delineated by using a scanning electron microscope (SEM), appeared to be a suitable morphological feature for distinguishing some groups of small flukes. Eggs from the Haplorchiinae were typified by the characteristic filamentous mesh structure. The problems of identification of eggs in human stool samples and suitability of using morphological criteria such as shape and size of eggs are discussed herein.
猫后睾吸虫、华支睾吸虫（后睾科）、太氏嗜眼吸虫、矮小嗜眼吸虫、横川嗜眼吸虫、镰刀星隙吸虫和后殖吸虫属（异形科）。本研究揭示了虫卵在大小和形状上存在很大的种内变异性和种间相似性。虫卵形状似乎不适用于物种鉴定。另一方面，通过对虫卵大小进行生物统计学分析，我们能够根据表征虫卵大小的福斯特 - 梅勒尼指数（FMI），而非虫卵的长度和宽度，将所研究物种的虫卵分为四个不同的组。使用扫描电子显微镜（SEM）描绘的虫卵表面结构似乎是区分某些小型吸虫类群的合适形态特征。嗜眼吸虫亚科的虫卵以特征性的丝状网状结构为典型特征。本文讨论了在人类粪便样本中虫卵鉴定的问题以及使用虫卵形状和大小等形态学标准的适用性。
