THE TELOSPORASIDA AND THE COCCIDLA PROPER 



171 



EIMERIA BUKIDNONENSIS 

 TUBANGUI, 1931 



Synonyms : Eimeria ivyomingensis 

 Huizinga and Winger, 1942; Eimeria 

 khurodensis Rao and Hiregaudar, 1954. 



Hosts : Ox, zebu. 



Location : Unknown. Oocysts found 

 in feces. 



Geographic Distribution : North 

 America, Philippines, USSR, Africa 

 (Nigeria), South America (Brazil). 



Prevalence : This species is rela- 

 tively uncommon. Baker (1938, 1939) and 

 Christensen (1938) reported it in a heifer 

 in New York, Christensen (1941) found it 

 infrequently in Alabama, Huizinga and 

 Winger (1942) found it in 10 cattle in 

 Wyoming, and Hasche and Todd (1959) 

 found it in 5% of 355 cattle in Wisconsin. 

 Tubangui (1931) found it in 1 of 28 zebus 

 in the Philippines. Yakimoff, Gousseff 

 and Rastegaieff (1932) found it in 2 of 126 

 oxen in Uzbekistan. Yakimoff (1933) found 

 it in 2 of 17 zebus and 1 of 41 oxen in 

 Azerbaidzhan. Marchenko (1937) found it 

 in 0. 7% of 137 cattle from the North Cau- 

 casus. Yakimoff (1936) found it in 1 of 49 

 cattle in Brazil, Torres and Ramos (1939) 

 reported it from 8% of 146 cattle in Brazil. 

 Lee (1954) found it in a Fulani calf (zebu) 

 in Nigeria. 



Morphology : The oocysts are piri- 

 form, yellowish brown to dark brown, 33 

 to 54 by 24 to 35jj,. Their length-width 

 ratio is 1. 3 to 1.8 with a mean of about 

 1. 4. The oocyst wall is about 2 to 4 jj. 

 thick except at the micropylar end, where 

 it is thin. It is composed of 2 layers (3 

 according to Yakimoff, 1933), the outer 

 one thick and the inner one a tough mem- 

 brane. Tubangui (1931), Yakimoff (1933), 

 and Lee (1954) described the wall as 

 radially striated, but the only American 

 author to note this feature was Baker 

 (1939). The oocyst wall is speckled, and 

 rather rough. The micropyle is conspic- 

 uous, 3. 5 to 7jLj, in diameter. An oocyst 

 residuum and polar granule are absent. 

 The sporocysts are elongate lemon-shaped. 



14 to 22 by 9 to 12 |j.. A Stieda body is 

 possibly present. Definite sporocyst res- 

 idual material is absent. The sporozoites 

 were described by Tubangui as more or 

 less roundish or reniform and illustrated 

 without refractile globules. According to 

 Huizinga and Winger, refractile globules 

 are prominent, and it is possible that 

 Tubangui mistook these for the sporozoites 

 proper. 



Rao and Hiregauder (1954) described 

 a new species, E. khurodensis , from zebus 

 in India. It failed to sporulate, and there 

 is nothing in their description which differs 

 from that of E. biikidnonensis. 



The sporulation time is 4 to 7 days 

 according to Christensen (1941), 5 to 7 

 days according to Huizinga and Winger 

 (1942), 24 to 27 days according to Baker 

 (1939). 



Life Cycle : Unknown. Baker (1939) 

 found that oocysts first appeared in an ex- 

 perimentally infected calf on the 10th day. 



Pathogenesis : Baker (1939) observed 

 a tendency toward a diarrheic condition 

 from the 7th to 15th days after experi- 

 mental infection of a 70-day old calf with 

 55 oocysts. 



EIMERIA CANADENSIS 

 BRUCE, 1921 



Synonyms : Eimeria zurnabadensis . 



Hosts : Ox, zebu. 



Location : Unknown. Oocysts found 

 in feces. 



Geographic Distribution : North Amer- 

 ica, USSR (Azerbaidzhan). 



Prevalence : This species is quite 

 common in the United States. Hasche and 

 Todd (1959) found it in 35% of 355 cattle in 

 Wisconsin. 



Morphology : This species has been 

 described by Christensen (1941). The 

 oocysts are 28 to 37 by 20 to 27 jm with a 



