Coccidia and Coccidiosis of Domesticated, Game and Laboratory Animals and of Man

Becker, Elery R.

doi:10.1097/00000441-193409000-00022

Cited by 56 publications

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“…Eimeria as this parasite is differentiated from Isospora by the typical features for the Eimeria 245 oocyst with 4 sporocysts per oocyst and 2 sporozoites per sporocyst (Becker, 1934) (Fig. 1a 246 and 1b), whereas Isospora oocysts have 2 sporocysts per oocyst and 4 sporozoites per 247 sporocyst (Becker, 1934).…”

Section: Morphological Analysis Further Confirmed That the E Labbeanmentioning

confidence: 98%

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Morphological and molecular characterization of Eimeria labbeana-like (Apicomplexa:Eimeriidae) in a domestic pigeon (Columba livia domestica, Gmelin, 1789) in Australia

Yang

Brice

Elloit

et al. 2016

Experimental Parasitology

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Please cite this article as: Yang, R., Brice, B., Elloit, A., Ryan, U., Morphological and molecular characterization of (Apicomplexa:Eimeriidae) in a domestic pigeon ( Gmelin, 1789) in Australia, Experimental Parasitology (2016), doi: 10.1016/j.exppara.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPTAn Eimeria species is described from a domestic pigeon (Columba livia domestica). 21Sporulated oocysts (n = 35) were subspherical, with a smooth bi-layered oocyst wall (1.0 µm 22 thick). Oocysts measured 20.2 x 16.1 (22.0-18.9 x 15.7-18.9) µm, oocyst length/width (L/W) 23 ratio, 1.38. Oocyst residuum and a polar granule were present. The micropyle was absent. 24Sporocysts are elongate-ovoid, 13.0 x 6.1 (14.5-12.5 x 5.5-7.0) µm, sporocyst L/W ratio, 2.13 25 (2.0-2.2), sporocyst residuum was present, composed of numerous granules in a spherical or 26 ovoid mass. Each sporocyst contained 2 banana-shaped sporozoites, 12.3 x 3.5 (11.8-13.0 x 27 3.3-3.6) µm. A spherical-ellipsoid posterior refractile body was found in the sporozoites. A 28 nucleus was located immediately anterior to the posterior refractile body. Introduction 45 The domestic pigeon (Columba livia domestica) is derived from the rock pigeon 46 (Columba livia), which is the world's oldest domesticated bird. The domestic pigeon was 47 initially introduced into Australia by European settlers (Croome and Shields, 1992). 48Coccidiosis is a widespread disease caused by protozoan parasites of the genus Eimeria 49 (Coccidia: Eimeriidae), which is a complex and diverse group of protozoan parasites (Tenter, 50 2002). Over 1,700 Eimeria species have been identified worldwide (Duszynski et al., 2000). 51In birds, pathogenic Eimeria causes enteric disease and major economic losses in the global 52 poultry industry (McDougald et al., 1997). (Varghese, 1978) and E. zenaidae (Adriano et al., 2003). However, 61 due to incomplete descriptions and lack of measurements for many Eimeria sp. from 62 Columbidae in the past, it is difficult to validate existing species and Duszynski et al. (2000) 63 have stated that it was likely only two species (E. labbeana and E. columbarum) occur in 64 pigeons. As a result of these difficulties, molecular tools are essential to accurately delimit 65 species and infer phylogenetic relationships among Eimeria species. 66 M A N U S C R I P T pigeon had a large old wound to the neck and another on a wing. It underwent surgery and 78 made a full recovery. A faecal sample was taken soon after admission and microscopy 79 revealed unsporulated coccidian oocysts. 80 A C C E P ...

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Section: Morphological Analysis Further Confirmed That the E Labbeanmentioning

confidence: 98%

“…1a 246 and 1b), whereas Isospora oocysts have 2 sporocysts per oocyst and 4 sporozoites per 247 sporocyst (Becker, 1934). 248…”

Section: Morphological Analysis Further Confirmed That the E Labbeanmentioning

confidence: 99%

Morphological and molecular characterization of Eimeria labbeana-like (Apicomplexa:Eimeriidae) in a domestic pigeon (Columba livia domestica, Gmelin, 1789) in Australia

Yang

Brice

Elloit

et al. 2016

Experimental Parasitology

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“…Pinto (1928) described the oocysts of E. miyairii for the first time; he believed it to be a new species to which he gave the name, E. carinii. Roudabush (1937) Ohira's (1912) Becker (1934) and Dieben (1924) stated that it was composed of two layers; on the other hand, Matubayasi (1938), reported only one layer, Perard (1926) illustrated a single layer, and we ourselves found only a single layer in the forms from R. norvegicus and R. hawaiiensis which we studied. The oocysts described by Becker, Hall, and Hager (1932) Matubayasi, 1938; three and one-half days according to Dieben, 1924).…”

Section: Maximus (Ground Squirrels)mentioning

confidence: 46%

“…Remarks: Although Cerna and Daniel (1956) Rysavy, 1954: 131-174. Eimeria carina Pinto, 1928: 127-128; Becker and Burroughs, 1933: 123;Becker, 1934;Matubayasi, 1938: 144-163. [non] Eimeria miyairii: Perard, 1926: 120-124;Becker, Hall, and Hager, 1932: 299-316;Becker, 1934;Yakimoff and Gousseff, 1935: 261-265. Description: Oocysts spherical to subspherical, with a thick, rough, * Matubayasi (1938), the wall is composed of two layers, the outer one thin and rough, and the inner one thick and radially striated. On the basis of Pinto's (1928) illustration, there may be two layers in the oocyst wall.…”

Section: Maximus (Ground Squirrels)mentioning

confidence: 99%

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The Coccidian Parasites (Protozoa, Sporozoa) of Rodents

Hammond¹,

Levine²,

Ivens³

1966

The Journal of Parasitology

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Generalist Eimeria species in rodents: Multilocus analyses indicate inadequate resolution of established markers

Jarquín‐Díaz

Balard

Mácová

et al. 2020

Ecology and Evolution

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Intracellular parasites of the genus Eimeria are described as tissue/host‐specific. Phylogenetic classification of rodent Eimeria suggested that some species have a broader host range than previously assumed. We explore whether Eimeria spp. infecting house mice are misclassified by the most widely used molecular markers due to a lack of resolution, or whether, instead, these parasite species are indeed infecting multiple host species. With the commonly used markers (18S/COI), we recovered monophyletic clades of E. falciformis and E. vermiformis from Mus that included E. apionodes identified in other rodent host species (Apodemus spp., Myodes glareolus, and Microtus arvalis). A lack of internal resolution in these clades could suggest the existence of a species complex with a wide host range infecting murid and cricetid rodents. We question, however, the power of COI and 18S markers to provide adequate resolution for assessing host specificity. In addition to the rarely used marker ORF470 from the apicoplast genome, we present multilocus genotyping as an alternative approach. Phylogenetic analysis of 35 nuclear markers differentiated E. falciformis from house mice from isolates from Apodemus hosts. Isolates of E. vermiformis from Mus are still found in clusters interspersed with non‐Mus isolates, even with this high‐resolution data. In conclusion, we show that species‐level resolution should not be assumed for COI and 18S markers in coccidia. Host–parasite cospeciation at shallow phylogenetic nodes, as well as contemporary coccidian host ranges more generally, is still open questions that need to be addressed using novel genetic markers with higher resolution.

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Coccidia and Coccidiosis of Domesticated, Game and Laboratory Animals and of Man

Cited by 56 publications

References 0 publications

Morphological and molecular characterization of Eimeria labbeana-like (Apicomplexa:Eimeriidae) in a domestic pigeon (Columba livia domestica, Gmelin, 1789) in Australia

Morphological and molecular characterization of Eimeria labbeana-like (Apicomplexa:Eimeriidae) in a domestic pigeon (Columba livia domestica, Gmelin, 1789) in Australia

The Coccidian Parasites (Protozoa, Sporozoa) of Rodents

Generalist Eimeria species in rodents: Multilocus analyses indicate inadequate resolution of established markers

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