| host-dependent morphology of isthmiophora melis (schrank, 1788) luhe, 1909 (digenea, echinostomatinae)--morphological variation vs. molecular stability. | echinostomes are cosmopolitan digenean parasites which infect many different warm-blooded hosts. their classification is extremely confused; the host spectrum is wide, and morphological similarities often result in misidentification. during our long-term studies on the helminth fauna of rodents and carnivores we have collected 27 collar-spined echinostomes which differ in morphology to an extent that suggests the presence of more than one species. here, we describe this material, and the extent ... | 2015 | 26394689 |