Epicellular and nodular coccidiosis in the intestine of barbel Barbus barbus

Abstract

During parasitological examination of Danubian barbels, an epicellular and a nodular coccidiosis were demonstrated in the gut of mature fish specimens. Both coccidioses appeared in late spring as concurrent infections. In that period, the prevalence of the epicellular species was 18.4 % while nodular coccidiosis was detected in 1 fish specimen only. The mucus drawn off from the gut mucosa contained unsporulated oocysts of a Goussia species developing in epicellular location. Based upon their morphological characteristics after sporulation, they were described as a new species by the name of Goussia koertingi. The gamogonic stages and unsporulated oocysts of the other unidentified species with supranuclear development were detected from nodules located in specific areas of the gut epithelium.

Intestinal coccidiosis of anadromous and landlocked alewives, Alosa pseudoharengus, caused by Goussia ameliae n. sp. and G. alosii n. sp. (Apicomplexa: Eimeriidae)

“…Although this study documented two coccidian species in the intestinal tract, G. ameliae was the predominant species, being associated with a higher prevalence and heavier infection intensity. The developmental cycle of G. ameliae was similar to that of other epicellular coccidians in fish, such as G. janae ( Lukes and Dykova, 1990 ), G. pannonica ( Molnar, 1989 , Lukes, 1992 ), and G. koertingi ( Baska 1997 ), in which developmental stages were intracellular, though occurring in the extracytoplasmic region in the microvillar zone of enterocytes. Epicellular development has been seen in other apicomplexan parasites including gregarines and cryptosporidium, apparently benefitting the parasites by providing a mechanism to evade the immune response, acquire nutrients, and aid in transmission ( Valigurova et al, 2008 , Dumenil, 2011 , Valigurova, 2012 ).…”

Goussia molnarica n. sp. (Apicomplexa: Coccidia) infecting the gut of the freshwater catfish Clarias gariepinus in Egypt

“…In temperate climatic zones, intensive infections have been found mostly in the spring and the summer (Odense & Logan 1976, Baska 1997 (2000) 13.6-16.3 7.5-10.6 5.5-9.1 1.2-2.5 Clarias Present study (14.4 ± 1.0) × (7.8 ± 1.3) × (6.8 ± 1.1) × (2.0 ± 0.47) × gariepinus 9.7-13.9 3.9-7.0 0.7-2.1 1.6-2.3 (10.9 ± 1.7) (5.6 ± 0.9) (1.7 ± 0.5) (1.9 ± 0.3) Table 2. Goussia spp.…”

An intestinal Eimeria infection in juvenile Asian seabass (Lates calcarifer) cultured in Vietnam – A first report

“…These parasitic infections have not been reported in L. calcarifer except for a brief mention of Cryptospordium by Glazebrook and Campbell (1987). Cryptosporidium is typically epicytoplasmic while Eimeria and Goussia may be either epicytoplasmic or intracytoplasmic parasites (Molnar and Baska, 1986;Landsberg and Paperna, 1987;Molnar 1989;Lukes and Dykova, 1990;Szekely and Molnar, 1992;Landsberg 1993;Benajiba et al, 1994; Paperna and Vilenkin, 1996;Alvarez-Pellitero et al, 1997;Baska 1997;Alvarez-Pellitero and Sitja-Bobadilla, 2002;Alvarez-Pellitero et al, 2004;Ryan et al, 2004;Murphy et al, 2009). These apicomplexan parasites are distinguished by the morphology of their oocysts.…”