Morphology, biology and taxonomy of<i>Dendritobilharzia loossi</i>Skrjabin, 1924 (Trematoda: Bilharziellidae), a parasite of<i>Pelecanus onocrotalus</i>(Pelecanidae) and<i>Anas plathyrinchos</i>(Anatidae)

Life cycles of Dendritobilharzia loossi Skrjabin, 1924, a parasite of waterbirds, and its morphobiological traits are studied and described. Mollusks Anisus spirorbis, the infection rate of which in natural environments reaches 1.3-1.9%, were recorded as intermediate hosts under conditions of Uzbekistan. The development of this trematode in intermediate and definitive hosts lasts for 26 and 15 days, respectively. Diagnostic traits of the trematodes during all stages of their ontogeny are reviewed.

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