Nollen P M
Department of Biological Science, Western Illinois University, Macomb 61455.
J Parasitol. 1992 Apr;78(2):360-4.
General features observed on the surface of Philophthalmus megalurus and Philophthalmus gralli rediae include 2 rounded ambulatory buds, a tapered tail, a slitlike birth pore, and an oral opening surrounded by uniciliate sensory receptors. The tegument is folded in a ribbed pattern and is covered with small microvilli. The sensory receptors are concentrated on the lip of the oral opening but are less dense inside the buccal cavity. Both the birth pore and the buccal cavity are lined with a honeycomblike surface that may support the structural integrity of these highly extensible orifices. Major differences between the 2 species were noted in the structure of the sensory receptors. In P. megalurus they have flexible cilia that originate from a bulbous tegumental base. Receptors of P. gralli rediae are less dense, appear to have rigid cilia, and lack a bulbous base. In general P. megalurus rediae resemble more closely rediae of the philophthalmid Parorchis acanthus than they do those of P. gralli.
在巨眼嗜眼吸虫和格拉氏嗜眼吸虫雷蚴表面观察到的一般特征包括2个圆形的游动芽、一个逐渐变细的尾部、一个狭缝状的生殖孔以及一个被单纤毛感觉感受器包围的口孔。体表呈肋状折叠，覆盖着小的微绒毛。感觉感受器集中在口孔边缘，但在口腔内密度较小。生殖孔和口腔内衬有蜂窝状表面，这可能有助于维持这些高度可伸展孔口的结构完整性。在感觉感受器的结构上发现了这两个物种之间的主要差异。在巨眼嗜眼吸虫中，它们有灵活的纤毛，起源于球形的体表基部。格拉氏嗜眼吸虫雷蚴的感受器密度较小，似乎有僵硬的纤毛，并且没有球形基部。一般来说，巨眼嗜眼吸虫雷蚴与棘口嗜眼吸虫的雷蚴比与格拉氏嗜眼吸虫的雷蚴更相似。
