influence of parasitism on the use of small terrestrial rodents in environmental pollution monitoring.bioaccumulation of cadmium, chromium, copper, manganese, nickel, lead and zinc in small terrestrial rodents - voles and their cestode parasite paranoplocephala dentata was studied. contents of pb, mn, ni and zn in the parasite were found to be higher than in the kidney and liver of the parasitized animals. lead level in the cestode was 37 fold higher than in the liver of the infected rodents. bioaccumulation factors of zinc, nickel and manganese in the cestode are mostly in the range from 2 to 4 ...200919427725
ultrastructure of spermiogenesis and the spermatozoon of anoplocephaloides dentata (cestoda, cyclophyllidea, anoplocephalidae), an intestinal parasite of arvicolidae rodents.spermiogenesis in anoplocephaloides dentata begins with the formation of a differentiation zone delimited by a ring of arched membranes. this conical area shows 2 parallel centrioles with associated anterior reduced striated roots but without an intercentriolar body. only 1 of the centrioles develops an axoneme that grows into a cytoplasmic extension. two crestlike bodies appear when the nucleus initiates its migration along the spermatid body. we describe for the first time at the end of spermi ...19989920302
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