Abstract

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.

Highlights

  • The genus Dendritobilharzia Skrjabin et Zakharov, 1920 comprises trematodes parasitizing blood vessels of waterbirds

  • The goal of the present work is the study of all stages of the development of morphological and biological traits of the trematode D. loossi

  • Embryos develop in the eggs situated in the tissues of the definitive host (Fig. 2)

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Summary

Introduction

The genus Dendritobilharzia Skrjabin et Zakharov, 1920 comprises trematodes parasitizing blood vessels of waterbirds. This genus includes four species, namely Dendritobilharzia pulverulenta (Braun, 1901), D. loossi Skrjabin, 1924, D. anatinarum Cheatum, 1941, and D. asiatica Mehra, 1940. Until 1968, no data on the biology of the species from the genus Dendritobilharzia had been available in literature. A detailed study of the morphology and biological traits of D. pulverulenta was carried out by (Khalifa, 1976). This author established the mollusks Anisus vortex (L., 1758) and Planorbis planorbis (L., 1758) as intermediate hosts of this trematode, the infection levels of which by the cercariae reached 5.6 and 1.7 %, respectively.

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