Mostafa Osama M S, Dajem Saad M Bin
Department of Biology, Faculty of Science, King Khaled University, Abha, PO Box 9004, Saudi Arabia.
J Egypt Soc Parasitol. 2010 Apr;40(1):197-204.
The alteration in the concentrations of metallic ion Pb, Zn, K, Na, Co, Fe, and Cu in the soft parts of the Biomphalaria alexandrina snails shedding Schistosoma mansoni cercariae was detected by flame atomic absorption spectrometry. Six elements Pb, Zn, K, Na, Co, and Cu were found to be present at significantly higher concentrations in cercariae-shedding snails compared with uninfected snails. The concentration of Fe ion showed non-significant decrease in the tissues of cercariae-shedding snails. Variation in the present results compared with related previous studies lead to the suggestion that the effect of trematode parasitism on fresh-water snails should not be considered universal and might be varies according to the trematode-snail combination, the organs or the tissues analyzed and the analytical method used.
采用火焰原子吸收光谱法检测了曼氏血吸虫尾蚴逸出期亚历山大双脐螺软体部分金属离子铅、锌、钾、钠、钴、铁和铜的浓度变化。结果发现，与未感染的螺相比，逸出尾蚴的螺体内六种元素（铅、锌、钾、钠、钴和铜）的浓度显著更高。铁离子浓度在逸出尾蚴的螺组织中呈非显著性降低。与之前相关研究相比，本研究结果的差异表明，吸虫寄生对淡水螺的影响不应被视为普遍现象，可能会因吸虫-螺的组合、分析的器官或组织以及所采用的分析方法而有所不同。
