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Fine Structure of Plasmodium gallinaceum in Embryonic and Neonate Chicks *
Author(s) -
LUSHBAUGH WILLIAM B.,
McGHEE R. BARCLAY,
SINGH SUNITA D.
Publication year - 1976
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.1550-7408.1976.tb05255.x
Subject(s) - plasmodium gallinaceum , biology , vacuole , parasite hosting , embryo , cytoplasm , embryonic stem cell , virology , plasmodium (life cycle) , avian malaria , andrology , microbiology and biotechnology , immunology , malaria , gametocyte , genetics , plasmodium falciparum , gene , medicine , world wide web , computer science
SYNOPSIS. The erythrocytic stages of Plasmodium gallinaceum in chicken embryos injected with parasitized blood either from a syringe‐passaged infection in chickens or from a chicken infected with sporozoites, were characterized by abnormal structure. Particularly evident were large, unstained vacuoles within the cytoplasm; these occurred with greatest frequency in schizonts. The presence of myelin bodies within these vacuoles was revealed by transmission electron microscopy; abnormal cytokinesis and aberrant merozoites provided additional evidence of the parasite's inability to develop naturally within the milieu of the embryonic erythrocytes. Fifty‐five passages were necessary to restore normal structure of the parasites in embryos, while only 5 passages were required for such restoration in neonate chicks. The probable adaptation of the parasite to the proportions of hemoglobin of the adult chicken may be responsible for the abnormal growth in the immature host.