Abstract
An ultrastructural topography has been made to the tegumental architectures of two Egyptian schistosomes namely S. mansoni and S. haematobium hosted in a model animal namely Cricentus auratus. The distribution of sensory papillae on the oral sucker were arranged in one circle around the rim in addition to some papillae in upper part of inner zone in male, female S. mansoni and in male S. haematobium. The differences in the types of papillae, their distribution and shape of ridges on various parts of the body surface which are quite specific for each species was studied. Also, the ventral tegument of female’s displays larger and more numerous sensory papillae. Both ciliated and non-ciliated papillae were observed in this work which makes a link with another species of schistosome S. japonicum. Another characteristic feature in this study is unique of male of S. haematobium, the extensive formation of ridges and transformation to microvilli in the posterior region in males. These finding may provoke further study of schistosomes hosted in animal model for more detailed investigation at the molecular level.
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Many thanks to dr. Yousra Moustafa lecturer of English in Faculty of Arts, Mansoura University for revision of our paper (language and grammer).
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Prof. ESR participated in the design of the study, in the photographing of the specimens and reviewed the final editing of the manuscript. Prof. AES carried out the final revision of the manuscript. MAS performed the preparation process of worms and participated in the photographing. Dr. EAE conceived of the study; participated in its design, getting the worms, preparation process and coordination; and helped to draft the manuscript. All authors read and approved the final manuscript.
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All deals with animals in this study were carried out according to international valid guidelines of experimental animal studies and research protocol was approved by the local ethical committee of the faculty of Science, Mansoura University with code number MZ18007.
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The authors declare that they have no conflict of interest.
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Dr. El-Shabasy and Dr. Reda have equally contributed to this work.
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Reda, E.S., El-Shabasy, E.A., Said, A.E. et al. Comparative ultrastructural observations of the Egyptian schistosomes: Schistosoma mansoni and Schistosoma haematobium. J Parasit Dis 43, 120–133 (2019). https://doi.org/10.1007/s12639-018-1067-y
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DOI: https://doi.org/10.1007/s12639-018-1067-y