The purpose of this study was to analyze changes in the assemblage benthic macroinvertebrates, as a response anthropogenic environmental alterations river Extra-Andean Patagonia. Four sampling surveys were carried out between March 2017 and 2019, contrasting seasons on middle course Chico River (Santa Cruz). Six stations established: two reference upstream Gobernador Gregores town four downstre...

The effect of exposing the lymnaeid snail Fossaria cubensis to the trematode Fasciola hepatica on the snail population's life-history traits was studied under laboratory conditions. Exposed individuals showed a lower survival rate than control snails, although from week 7 onward a slower decrease of this parameter in relation to the control group was observed. There were higher values of fecund...

Schistosomatidae are an actively studied ecological group of trematodes. Their ability to cause various parasitic diseases in animals and humans makes them interesting object study for a number research centres worldwide. One the commonest species this is Bilharziella polonica (Kowalewsky, 1895), whose mature stages have been recorded aquatic semi-aquatic birds Uzbekistan. Our team established ...