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Karyolysus sp. (Haemogregarinidae, Adeleida, Apicomplexa): Host‐Parasite Relationships of Persisting Stages
Author(s) -
BEYER TAMARA V.,
SIDORENKO NINA V.
Publication year - 1984
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1984.tb05493.x
Subject(s) - biology , apicomplexa , intracellular , parasite hosting , vacuole , intracellular parasite , host (biology) , microbiology and biotechnology , zoology , immunology , ecology , protozoal disease , cytoplasm , malaria , world wide web , computer science
. Two persisting stages in the life cycle of a hemogregarine Karyolysus sp. are described from the liver and blood cells of its intermediate host, the lizard Lacerta raddei nairensis. The tissue cell merozoites lie in a parasitophorous vacuole. Despite the protective role of the vacuolar membrane, the intracellular parasites are progressively destroyed and eliminated during the autumn and winter. Some of the merozoites that normally survive within the host cell even in cold seasons appear to be surrounded by another type of parasitophorous vacuole which is connected to the intercellular space by narrow channels. The intraerythrocytic gamonts that persist in the circulating blood are encapsulated and undergo progressive, obvious structural changes. The two persisting stages are compared with hypnozoites of other Sporozoa.