Rollinson D, Southgate V R, Vercruysse J, Moore P J
Department of Zoology, British Museum, London, U.K.
Acta Trop. 1990 Feb;47(2):101-14. doi: 10.1016/0001-706x(90)90072-8.
Surveys of 332 naturally infected bovines at eight abattoirs in Senegal, The Gambia and Mali were carried out to determine the prevalence of infection with Schistosoma bovis and S. curassoni and to pinpoint areas where the distribution of the species overlap. S. bovis was the commonest schistosome of cattle in Senegal and Mali being found in animals at seven abattoirs, the highest prevalence of 85.1% occurred at Mopti in Mali. S. bovis was the only bovine schistosome observed in The Gambia. S. curassoni was isolated from a cow at Bamako and shown to have similar glucose-6-phosphate dehydrogenase, phosphoglucomutase and acid phosphatase profiles to those described for a Senegalese isolate. Evidence of interaction of S. bovis with S. curassoni was found in cattle from Senegal, at Tambacounda and Kolda, and from Mali, at Bamako and Mopti. A mixed experimental infection of both species in a sheep showed the lack of any specific mate recognition system: identification of the worms was facilitated by analysis of acid phosphatase by isoelectric focusing in polyacrylamide gels. Viable hybrid parasites were produced in the laboratory and were maintained up until the F4 generation. Comparisons of egg morphology, surface structure of adult male worms and enzyme profiles have been made between experimental hybrid lines and field isolates. Possible mechanisms maintaining species integrity are discussed.
在塞内加尔、冈比亚和马里的8个屠宰场对332头自然感染的牛进行了调查，以确定牛血吸虫和柯氏血吸虫的感染率，并查明这两种血吸虫分布重叠的区域。牛血吸虫是塞内加尔和马里牛群中最常见的血吸虫，在7个屠宰场的动物中均有发现，马里莫普提的感染率最高，为85.1%。牛血吸虫是在冈比亚观察到的唯一一种牛血吸虫。柯氏血吸虫是从巴马科的一头母牛中分离出来的，其葡萄糖-6-磷酸脱氢酶、磷酸葡萄糖变位酶和酸性磷酸酶谱与塞内加尔分离株的描述相似。在塞内加尔的坦巴昆达和科尔达以及马里的巴马科和莫普提的牛中发现了牛血吸虫与柯氏血吸虫相互作用的证据。在一只绵羊中对这两种血吸虫进行混合实验感染，结果表明缺乏任何特异性的配偶识别系统：通过在聚丙烯酰胺凝胶中进行等电聚焦分析酸性磷酸酶，有助于对虫体进行鉴定。在实验室中产生了有活力的杂交寄生虫，并维持到F4代。对实验杂交系和野外分离株之间的虫卵形态、成年雄虫表面结构和酶谱进行了比较。讨论了维持物种完整性的可能机制。
