Sitjà-Bobadilla A, Alvarez-Pellitero P
Instituto de Acuicultura Torre de la Sal, Consejo Superior de Investigaciones Científicas, Torre de la Sal s/n, 12595 Ribera de Cabanes, Castellón, Spain.
Parasitol Res. 2003 Oct;91(3):209-14. doi: 10.1007/s00436-003-0945-z. Epub 2003 Aug 16.
Cryptosporidium molnari was experimentally transmitted to gilthead sea bream (Sparus aurata) and European sea bass (Dicentrachus labrax) by oral infection with infected stomach scrapings. The infection was also cross-transmitted from infected gilthead sea bream to sea bass by cohabitation. The course of the infection was assessed after necropsy by three microscopic diagnostic methods and their sensitivity was compared. At the end of all the experiments the prevalence of infection reached 100%. In the oral experiments, both fish hosts appeared infected as early as 7 days post exposure (p.e.), but gilthead sea bream exhibited a higher intensity of infection and infection proceeded at a faster rate than in sea bass. The cellular host reaction was stronger in sea bass than in sea bream, whereas the histopathological effect was lower in the former. Transmission could be favoured by cannibalism among cohabiting fish. This is the first report on piscine Cryptosporidium transmission. The implications for the aquaculture industry are discussed.
通过口服感染的胃刮屑，莫氏隐孢子虫被实验性地传播给了金头鲷（Sparus aurata）和欧洲海鲈（Dicentrachus labrax）。感染也通过同居从受感染的金头鲷传播给了海鲈。尸检后通过三种显微镜诊断方法评估感染过程，并比较了它们的敏感性。在所有实验结束时，感染率达到了100%。在口服实验中，两种鱼类宿主在暴露后7天（p.e.）就最早出现感染，但金头鲷的感染强度更高，感染进展速度比海鲈更快。海鲈的细胞宿主反应比金头鲷更强，而前者的组织病理学效应更低。同居鱼类之间的同类相食可能有利于传播。这是关于鱼类隐孢子虫传播的首次报告。文中讨论了对水产养殖业的影响。
