Oocyst production of four species of murine coccidia

Tilahun, Getachew; Stockdale, P. H. G.

doi:10.1139/z81-246

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…This pattern of negative density dependence has been observed in many other eimerians (Hall, 1935;Brackett and Bliznick, 1952;Tilahun and Stockdale, 1981;Higgs and Nowell, 1988;Lillehoj, 1988). In general, these studies report an optimum inoculum that produces the largest reproductive index.…”

Section: Reduker Et Al (1985) Found a Prepatent Period Of 3-4 Days Asupporting

confidence: 73%

Oocyst Output, Periodicity, and Immunity of Two Deer Mouse (Peromyscus maniculatus) Eimerians (Eimeria arizonensis and Eimeria delicata)

Fuller¹,

Hefner²,

Wrosch³

1995

The Journal of Parasitology

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We compared the life histories of 2 eimerians (Eimeria arizonensis and Eimeria delicata), which co-occur in the deer mouse (Peromyscus maniculatus). Laboratory-reared deer mice were given 10(3), 10(4) (E. delicata), or 10(3), 10(4), or 10(5) (E. arizonensis) oocysts by stomach intubation. Eimeria arizonensis infections lasted longer (11-13 days) than E. delicata infections (9-10 days). Eimeria arizonensis infections also produced more oocysts for each oocyst ingested at both levels compared. Both parasites exhibited periodicity in oocyst output at all levels compared. However, peaks in E. arizonensis output occurred at approximately 20-24-hr intervals, whereas peaks in E. delicata output occurred at 12-16-hr intervals. Finally, deer mice developed immunity to both eimerians after only 1 inoculation at all levels tested. Based on these parameters, we expect E. arizonensis to have a greater reproductive potential than E. delicata in free-living deer mice.

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Section: Reduker Et Al (1985) Found a Prepatent Period Of 3-4 Days Asupporting

confidence: 73%

Oocyst Output, Periodicity, and Immunity of Two Deer Mouse (Peromyscus maniculatus) Eimerians (Eimeria arizonensis and Eimeria delicata)

Fuller¹,

Hefner²,

Wrosch³

1995

The Journal of Parasitology

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“…In our system one would predict a lower virulence for the prevalent E. ferrisi compared to E. falciformis and E. vermiformis. We have indications from laboratory experiments that such a lower virulence of E. ferrisi might be observed compared to E. falciformis (Al-khlifeh et al, 2019), while contrary results have been reported before (Tilahun and Stockdale, 1981). We consider this an observation warranting further research.…”

Section: Discussioncontrasting

confidence: 60%

Detection and quantification of house mouse Eimeria at the species level – Challenges and solutions for the assessment of coccidia in wildlife

Jarquín‐Díaz

Balard

Jost

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

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Detection and quantification of coccidia in studies of wildlife can be challenging. Therefore, prevalence of coccidia is often not assessed at the parasite species level in non-livestock animals. Parasite species – specific prevalences are especially important when studying evolutionary questions in wild populations. We tested whether increased host population density increases prevalence of individual Eimeria species at the farm level, as predicted by epidemiological theory. We studied free-living commensal populations of the house mouse ( Mus musculus ) in Germany, and established a strategy to detect and quantify Eimeria infections. We show that a novel diagnostic primer targeting the apicoplast genome (Ap5) and coprological assessment after flotation provide complementary detection results increasing sensitivity. Genotyping PCRs confirm detection in a subset of samples and cross-validation of different PCR markers does not indicate bias towards a particular parasite species in genotyping. We were able to detect double infections and to determine the preferred niche of each parasite species along the distal-proximal axis of the intestine. Parasite genotyping from tissue samples provides additional indication for the absence of species bias in genotyping amplifications. Three Eimeria species were found infecting house mice at different prevalences: Eimeria ferrisi (16.7%; 95% CI 13.2–20.7), E. falciformis (4.2%; 95% CI 2.6–6.8) and E. vermiformis (1.9%; 95% CI 0.9–3.8). We also find that mice in dense populations are more likely to be infected with E. falciformis and E. ferrisi . We provide methods for the assessment of prevalences of coccidia at the species level in rodent systems. We show and discuss how such data can help to test hypotheses in ecology, evolution and epidemiology on a species level.

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“…However with Eimeria there is unlikely to be a correlation between numbers of mucosal stages and oocysts since there is a prepatent period with many mucosal stages before oocysts are produced. Also there is believed to be a crowding effect where large infections of early stages in the mucosa inhibit production of later stages including oocysts (Tilahun & Stockdale, 1981;S. Ibrahim, pers.…”

Section: Quantitative Estimationmentioning

confidence: 99%

Microparasites of wild small mammals

Nowell

Healing

1987

Mammal Review

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Little is known of the biology of the majority of microparasites except for those of medical or veterinary importance. It is suggested that techniques already developed for identification and quantification of these important parasites should be modified as necessary and extended to the study of other microparasites. Isolation and maintenance of microparasites in laboratory-maintained hosts will improve these diagnostic techniques and will also allow investigation of the biology of the parasites under controlled conditions. The value of laboratory-based experiments as an adjunct to ecological studies is emphasized. Problems of interpretation are indicated.

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Oocyst production of four species of murine coccidia

Cited by 8 publications

References 10 publications

Oocyst Output, Periodicity, and Immunity of Two Deer Mouse (Peromyscus maniculatus) Eimerians (Eimeria arizonensis and Eimeria delicata)

Oocyst Output, Periodicity, and Immunity of Two Deer Mouse (Peromyscus maniculatus) Eimerians (Eimeria arizonensis and Eimeria delicata)

Detection and quantification of house mouse Eimeria at the species level – Challenges and solutions for the assessment of coccidia in wildlife

Microparasites of wild small mammals

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