I. Paperna et D. Di Cave, Kidney sphaerosporosis with extrasporogonic stages in the blood in Baryancistrus sp (Loricaridae) from Amazonian Brazil, PARASITE, 8(1), 2001, pp. 71-74
Citations number
5
Categorie Soggetti
Biology
Journal title
PARASITE-JOURNAL DE LA SOCIETE FRANCAISE DE PARASITOLOGIE
Examined fish of the genus Baryancistrus (Loricaridae) from Rio Xingu in ce
ntral amazonian Brazil were found infected with extrasporogonic stages of S
phaerospora sp. (Myxosporea) in the blood and sporogonic stages in the glom
eruli with the resulting escape of the sporogony products into the renal tu
bules, apparently when the mesangial tissue in the Bowmen's capsule collaps
ed. Spores were seen evacuating via the urinary tubules. Blood stages were
initially 2.1 x 2.8 to 2.8 x 2.8 mum in size, and when fully differentiated
reached 5.6 x 5.6 - 5.6 x 7.0 mum; in blood smears they were 11.2 x 8.4 to
14 x 8.4 mum Bisporoblasts in the glomerular taft were 9.8 x 7.0 mum, prem
ature spores were 5.6 x 4.2-5.6 mum.