Molnár K
Veterinary Medical Research Institute, Hungarian Academy of Sciences, Budapest.
Folia Parasitol (Praha). 1993;40(3):175-80.
It is known from earlier studies that the so-called K-protozoa, the late presporogonic stages of Sphaerospora renicola, a parasite causing renal sphaerosporosis in common carp (Cyprinus carpio), accumulate in the swimbladder wall and give rise to the disease called myxosporean swimbladder inflammation. The present study indicates that in the case of intensive infection these parasites also occur in the rete mirabile of the choroid of the eye, causing haemorrhages and necrosis. The results suggest that the K-stages of S. renicola are located in the blood path just like the early presporogonic C-stages; however, as they get stuck in organs rich in capillaries, it is difficult to demonstrate them from the blood of the common carp.
早期研究表明，所谓的K原生动物，即球孢虫（Sphaerospora renicola）的孢子形成前期后期阶段，这种寄生虫会导致鲤鱼（Cyprinus carpio）患上肾球孢虫病，它会在鱼鳔壁中积聚，并引发一种名为粘孢子虫性鱼鳔炎的疾病。目前的研究表明，在感染严重的情况下，这些寄生虫也会出现在眼脉络膜的奇异网中，导致出血和坏死。结果表明，肾球孢虫的K阶段与孢子形成前期早期的C阶段一样，位于血液循环路径中；然而，由于它们被困在富含毛细血管的器官中，因此很难从鲤鱼的血液中检测到它们。
