期刊
FOLIA PARASITOLOGICA
卷 50, 期 3, 页码 190-194出版社
FOLIA PARASITOLOGICA
DOI: 10.14411/fp.2003.034
关键词
Myxidium biliare; Myxosporeal; Galaxias maculatus; fish; Patagonia; Argentina
类别
Myxidium biliare sp. n., a new myxosporean species parasitizing the gall bladder of Galaxias maculatus (Jenyns), in Patagonia, is described. Its coelozoic plasmodia were floating free in the bile. Spores are fusiform 13.7 +/- 0.9 mum long and 6.9 +/- 0.6 mum wide, with rounded ends in frontal view and slightly pointed ends in sutural view; shell with ridges and sinuous sutural line. Both maximum prevalence and maximum percentage of immature plasmodia occurred in summer. In winter the prevalence and the percentage of immature plasmodia fell to their lowest values. Prevalence was independent of host sex but increased with host length. Prevalence in 15 Patagonian Andean lakes (situated from 39degrees25'S to 41degrees30'S) ranged between 4.2% and 70%.
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