REVEALING OF PARTHENITAE AND CERCARIAE ALARIA ALATA GOEZE, 1788 (TREMATODA, ALARIIDAE) IN PLANORBIS PLANORBIS (LINNÉ, 1758) IN MOLLUSKS OF VOLYN DISTRICT

O. P. Zhytova


DOI: http://dx.doi.org/10.30970/sbi.0803.379

Abstract


The morphology and differencial diagnosis of cercaria of the trematode Alaria alata Goeze, 1782 found in fresh water bellylegged molluscs Planorbis planorbis (Linné, 1758) in water reservoirs of Volyn District have been presented. Special attention is given to the structure of the front organ, digesting and excreting systems. A comparative characteristics of newly found cercaria A. alata with forms earlier described in fo­reign literature has been done. The difference in thorn, number on the front organ has been determined. The figure of exposed cercaria A. alata is given below. Trematodes A. alata in P. planorbis have been exposed in Ukraine for the first time. The above mentioned trematode species is cha­racterized by tetra life cycle and is widely distributed in Ukraine, threatening peoples health Vulpes vulpes Linnaeus, 1758, Nyctereutes procyonoides Gray, 1834 and Canis familiaris Linnaeus, 1758 are considered to be the hosts of A. alata. The inventory ma­king of trematodes larvae in fresh water belly legged molluscs of the region has not been finished yet. Considering the received data, it seems necessary to further investigate trematodes fauna of fresh water bellylegged molluscs to take preventive measures fighting with dangerous trematodes in people and animals.


Keywords


Planorbis planorbis, Alaria alata, cercaria, sporocyst

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