scholarly journals Cross-Transmission Studies with Eimeria arizonensis-like Oocysts (Apicomplexa) in New World Rodents of the Genera baiomys, Neotoma, Onychomys, Peromyscus, and Reithrodontomys (Muridae)

1992 ◽  
Vol 78 (3) ◽  
pp. 406 ◽  
Author(s):  
Steve J. Upton ◽  
Chris T. McAllister ◽  
Dianne B. Brillhart ◽  
Donald W. Duszynski ◽  
Constance D. Wash
Keyword(s):  
New World ◽  
Cross Transmission ◽  
Transmission Studies

The developmental cycle of Caryospora bubonis Cawthorn and Stockdale 1981 (Protozoa: Eimeriidae) in the great horned owl, Bubo Virginianus (Gmelin)

1982 ◽  
Vol 60 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Richard J. Cawthorn ◽  
P. H. G. Stockdale
Keyword(s):  
Prepatent Period ◽  
Gallus Domesticus ◽  
Endogenous Development ◽  
Developmental Cycle ◽  
Patent Period ◽  
Bubo Virginianus ◽  
Indirect Transmission ◽  
Asio Flammeus ◽  
Cross Transmission ◽  
Transmission Studies

The purpose of the study was to describe some parameters of oocyst production in direct and indirect transmission studies, endogenous development, and attempts at cross transmission of Caryospora bubonis (Protozoa: Eimeriidae) of great horned owls, Bubo virginianus (Gmelin). Three great horned owls were given sporulated oocysts of C. bubonis orally. Three more great horned owls were each fed two mice which had been given sporulated oocysts of C. bubonis orally, 4 weeks previously. Feces were examined daily by flotation and daily oocyst production was estimated. One great horned owl was given sporulated oocysts of C. bubonis and killed 12 days after infection when oocysts were first detected in feces. Tissues were examined histologically. Two long-eared owls (Asio otus (Pontoppidan)) and one short-eared owl (Asio flammeus (L.)) and domestic chicks (Gallus domesticus L.) were given sporulated oocysts of C. bubonis orally and their feces examined as above. Mice were given varying doses of sporulated oocysts of C. bubonis orally and killed sequentially after infection. Tissues of mice and chickens were examined histologically.The prepatent period was 12 days, the patent period was 4–11 days long and maximal oocyst production occurred from 12 to 17 days after direct infection of great horned owls with C. bubonis. The prepatent period was shortened by 48 h in owls indirectly infected with C. bubonis in mice. Endogenous development occurred in the posterior third of the small intestine. Caryospora bubonis was not transmitted to other species of birds.

Comparative morphological and cross transmission studies with bovine and deer babesias in Ireland

1990 ◽  
Vol 9 (3) ◽  
pp. 185-193 ◽  
Author(s):  
J.S. Gray ◽  
T.M. Murphy ◽  
S.M. Taylor ◽  
D.A. Blewett ◽  
R. Harrington
Keyword(s):  
Cross Transmission ◽  
Transmission Studies

Cryptosporidium infections in birds and mammals and attempted cross-transmission studies

1987 ◽  
Vol 26 (1-2) ◽  
pp. 1-11 ◽  
Author(s):  
P.J. O'Donoghue ◽  
V.L. Tham ◽  
W.G. de Saram ◽  
K.L. Paull ◽  
S. McDermott
Keyword(s):  
Cross Transmission ◽  
Transmission Studies

Oocyst production, late-stage merogony, gametogony, and cross-transmission studies of Eimeria bubonis (Protozoa: Eimeriidae) of the great horned owl, Bubo virginianus

1982 ◽  
Vol 60 (10) ◽  
pp. 2279-2283 ◽  
Author(s):  
Richard J. Cawthorn ◽  
P. H. G. Stockdale
Keyword(s):  
Small Intestine ◽  
Epithelial Cells ◽  
Host Specificity ◽  
Late Stage ◽  
Prepatent Period ◽  
Endogenous Development ◽  
Patent Period ◽  
Bubo Virginianus ◽  
Cross Transmission ◽  
Transmission Studies

The study was designed to examine oocyst production, endogenous development and host specificity of Eimeria bubonis (Protozoa: Eimeriidae). Three great horned owls were administered 1.0 × 104 sporulated oocysts of E. bubonis orally. Three more great horned owls were each fed two mice which had been previously intubated with sporulated oocysts of E. bubonis. Feces were examined daily after flotation and oocyst production was estimated. One great horned owl was administered 2.25 × 105 sporulated oocysts of E. bubonis, killed 5.5 days later and examined histologically. Domestic chicks were administered oocysts of E. bubonis and their feces examined as above. Mice were administered sporulated oocysts of E. bubonis and then killed sequentially. Tissues of chickens and mice were examined histologically. The prepatent period of E. bubonis in great horned owls was 5.0–6.0 days; the patent period was as short as 4–6 days. Maximal oocyst production occurred 6–7 days after infection. Endogenous development occurred distal to nuclei of villar epithelial cells in the anterior half of the small intestine. E. bubonis was not transmissible to chickens. Pyogranulomas developed and persisted 12 weeks in mice administered E. bubonis; however, there were no stages of E. bubonis infective to great horned owls.

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