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Structure and Respiration of Sporulating Eimeria stiedae and E. tenella Oocysts *
Author(s) -
WAGENBACH GARY E.,
BURNS WILLIAM C.
Publication year - 1969
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.1550-7408.1969.tb02266.x
Subject(s) - eimeria , biology , respiration , spore , respiration rate , microbiology and biotechnology , botany
SYNOPSIS. The structure and respiration of sporulating Eimeria tenella and E. stiedae oocysts was compared. Oocysts were purified by Clorox digestion and incubated at 29 C. The sporulation events were similar for both species, except for the spindle stage, altho sporulation took longer in E. stiedae. Sporulating oocysts go thru the process with some degree of synchrony. Oocyst respiration was measured polarographically. An early increase in respiratory rate in both species was followed by a depression in rate that correlated with the appearance of the early spindle stage. The rate again increased and then decreased toward a base rate during and after completion of sporulation. E. tenella oocysts incubated in air remained viable 4 times longer than those incubated in nitrogen. E. tenella sporozoites excysted and remained motile in the presence of sodium cyanide. These facts suggest that E. tenella sporozoites are facultative anaerobes.