Description of Eimeria bubonis sp.n. (Protozoa: Eimeriidae) and Caryospora bubonis sp.n. (Protozoa: Eimeriidae) in the great horned owl, Bubo virginianus (Gmelin), of Saskatchewan

1981 ◽  
Vol 59 (2) ◽  
pp. 170-173 ◽  
Author(s):  
Richard J. Cawthorn ◽  
P. H. G. Stockdale
Keyword(s):  
New Species ◽  
Outer Layer ◽  
Polar Granule ◽  
Oocyst Wall ◽  
Bubo Virginianus ◽  
Sporocyst Residuum ◽  
Two New Species ◽  
Sporocyst Wall ◽  
Oocyst Residuum

Two new species of Eimeriidae are described from the great horned owl, Bubo virginianus (Gmelin), of Saskatchewan. The subspherical oocysts of Eimeria bubonis sp.n. are 22.8 ± 2.7 μm (18–30) long and 21.7 ± 2.4 μm (16–29) wide. The spindle-shaped sporocysts are 12.7 ± 1.1 μm (9.5–15.0) long and 7.8 ± 0.7 μm (5.8–10.0) wide. The polar granule, Steida body, and sporocyst residuum are present; the micropyle and oocyst residuum are absent. The oocyst wall is 0.8 μm thick, with a thick, clear outer layer and a thin, dark inner layer. Sporozoites, with a prominent conoid at the anterior end, are 13.1 ± 1.5 μm (10.0–16.3) long and 2.6 ± 0.3 μm (2.0–4.8) wide.The subspherical oocysts of Caryospora bubonis sp.n. are 43.9 ± 3.4 μm (38–52) long and 40.2 ± 2.8 μm (33–47) wide. The subspherical sporocysts are 26.6 ± 3.4 μm (20–33) long and 25.6 ± 2.4 μm (20–32) wide. The sporocyst residuum is present; the polar granule, Steida body, and oocyst residuum are absent. The oocyst wall is 1.1 μm thick, with a thick, clear outer layer and a thin, dark inner layer. The sporocyst wall is 0.8 μm thick with a thick, clear outer layer and a thin, dark inner layer. Sporozoites, with a prominent conoid at the anterior end, are 15.5 ± 1.9 μm (13.0–20.8) long and 2.5 ± 0.2 μm (2.3–3.0) wide.In both species, sporulation is complete in 96 h at 21 ± 2 °C.

The Coccidia (Apicomplexa: Eimeriidae) of frogs from Algonquin Park, with descriptions of two new species

1989 ◽  
Vol 67 (7) ◽  
pp. 1686-1689 ◽  
Author(s):  
G. J. Chen ◽  
S. S. Desser
Keyword(s):  
New Species ◽  
Young Adult ◽  
Rana Catesbeiana ◽  
Polar Granule ◽  
Rana Sylvatica ◽  
Stieda Body ◽  
Rana Clamitans ◽  
Two New Species ◽  
Coccidian Parasites ◽  
Oocyst Residuum

During June and July of 1988, 264 amphibians from Algonquin Park, Ontario, were examined for eimeriid coccidian parasites; the species examined were Rana catesbeiana Shaw, Rana clamitans Latreille, Rana septentrionalis Baird, and Rana sylvatica LeConte. Two distinct types of oocysts were observed in the feces of the frogs. The highest prevalence of infection was recorded from young adult frogs and two new species of Eimeria are described from these animals. Oocysts of Eimeria algonquini n.sp. are spherical, 15.8 (14.5–16.1) μm in diameter, with a thin single-layered wall; micropyle and polar granule absent; large granular oocyst residuum present. Sporocysts banana-shaped, 19.5 (18.7–20.4) × 4.2 (3.8–4.6) μm with prominent granular residuum; Stieda body absent. Oocysts of Eimeria kermiti n.sp. are ovoid, 25.1 (24.7–26.6) × 19.5 (17.6–20.1) μm with thin single-layered wall; polar granule present; micropyle absent; large granular oocyst residuum present. Sporocysts ovoid, 9.9 (9.3–10.4) × 6.6 (6.0–7.1) μm with Stieda body and prominent granular residuum.

scholarly journals A new species of Eimeria (Apicomplexa: Eimeriidae) from tri-colored bats, Perimyotis subflavus (Chiroptera: Vespertilionidae), from the Ouachitas of Arkansas

2014 ◽  
Vol 59 (4) ◽  
Author(s):  
Chris McAllister ◽  
R. Seville ◽  
Robert Arlen ◽  
Matthew Connior
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Concurrent Infection ◽  
Sporocyst Residuum ◽  
The Third ◽  
Coccidian Parasites ◽  
Length Width ◽  
Measured Length ◽  
A New Species ◽  
Oocyst Residuum

AbstractBetween February 2013 and October 2013, eleven tri-colored bats, Perimyotis subflavus were collected from Marion, Polk, and Searcy counties, Arkansas, and their faeces examined for coccidian parasites. Two of eleven (18%) harboured an eimerian that we describe here as new. Oocysts of Eimeria mcdanieli sp. n. were ellipsoidal to elongate with a bi-layered wall and measured (length × width, L × W) 28.3 × 17.9 μm, with an L/W ratio of 1.6. A micropyle and oocyst residuum were absent but a single polar granule was present. Sporocysts were ovoidal, 12.6 × 8.3 μm, with an L/W ratio of 1.5. A pronounced, nipple-like Stieda body was present as well as a substieda body. A sporocyst residuum was present as dispersed bubble-like granules. This is the third coccidian described from tri-colored bats and the sixth species reported from Arkansas chiropterans. In addition, both infected bats harbored a concurrent infection of Eimeria heidti McAllister, Burt, Seville, and Robison, 2011.

The Coccidia (Apicomplexa: Eimeriidae) of Testudines, with descriptions of three new species

1989 ◽  
Vol 67 (10) ◽  
pp. 2459-2467 ◽  
Author(s):  
Chris T. McAllister ◽  
Steve J. Upton
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Stieda Body ◽  
Trachemys Scripta ◽  
Thin Membrane ◽  
Trachemys Scripta Elegans ◽  
Sporocyst Residuum ◽  
Three New Species ◽  
Oocyst Residuum

Three new species of Coccidia (Apicomplexa: Eimeriidae) are described from turtles in Texas, U.S.A. Oocysts of Eimeria texana sp.n. were found in 2/8 (25%) Texas cooters, Pseudemys texana, and are bent-cylindrical or elongate, 20.5 × 8.4 (17.6–23.2 × 7.2–9.0) μm (mean, range), with a smooth, thin, single-layered wall. A micropyle is absent but an oocyst residuum and polar granule are present. Sporocysts are ovoid, 8.1 × 4.7 (7.0–8.8 × 4.0–5.4) μm, with a Stieda body and sporocyst residuum. Oocysts of Eimeria cooteri sp.n. were recovered from 3/8 (37.5%) Pseudemys texana and are ellipsoid or bent-cylindrical, 25.9 × 10.9 (22.6–28.0 × 9.6–12.8) μm, with a single-layered wall. A polar granule and oocyst residuum are present but a micropyle is absent. Sporocysts are elongate, 14.9 × 5.3 (12.8–16.0 × 4.8–6.6) μm, with an elongate Stieda body capped by tiny knob-like thickenings and covered by a thin membrane; sporocyst residuum present. Oocysts of Eimeria stylosa sp.n. were harbored by 2/16 (12.5%) red-eared sliders, Trachemys scripta elegans, and are ovoid, 16.5 × 13.1 (14.4–17.6 × 12.0–14.4) μm, with a single-layered wall. Each end of the oocyst bears conical projections ca. 4.0 μm long. A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are ellipsoid, 11.1 × 5.8 (9.6–14.4 × 5.4–7.2) μm, with a small Stieda body and sporocyst residuum. A table of the more than 30 species of Coccidia of turtles is presented.

Coccidian parasites of birds of the avian order Columbiformes with a description of two new species of Eimeria

Parasitology ◽  
1980 ◽  
Vol 80 (1) ◽  
pp. 183-187 ◽  
Author(s):  
T. Varghese
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Morphological Characteristics ◽  
Stieda Body ◽  
Avian Order ◽  
Two New Species ◽  
Coccidian Parasites ◽  
Membrane Bound ◽  
Torres Strait ◽  
Oocyst Residuum

SummaryTwo new species of coccidia, Eimeria gourai sp. nov. from the Victoria crowned pigeon (Goura victoria Fraser) and Eimeria duculai sp.nov. from the Torres Strait imperial pigeon (Ducula spilorrhoa Gray) have been described. Eimeria gourai oocysts are spherical to sub-spherical in shape, measure 20·0 (19·0–22·0) × 20·0 (18·0–21·0) μm and are devoid of micropyle and oocyst residuum. Elongate sporocysts are 12·0 × 5·5 μm, and contain a granular residuum. Eimeria duculai oocysts are broadly ovoid with an inconspicuous micropyle at the narrower end. They are 28·0 (26·0–31·0) × 25·0 (23·0–27·0) μm in size, without residuum but with a membrane-bound polar granule. The elongate sporocysts are 15·5 × 7·2 μm, with prominent Stieda body and granular, membrane-bound residuum. The morphological characteristics of the known coccidian oocysts from birds of the avian order Columbiformes are reviewed.

scholarly journals Isospora coerebae n. sp. (Apicomplexa: Eimeriidae) from the bananaquit Coereba flaveola (Passeriformes: Coerebidae) in South America

2011 ◽  
Vol 20 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Bruno Pereira Berto ◽  
Walter Flausino ◽  
Hermes Ribeiro Luz ◽  
Ildemar Ferreira ◽  
Carlos Wilson Gomes Lopes
Keyword(s):  
New Species ◽  
South America ◽  
Polar Granule ◽  
Refractile Body ◽  
Coccidian Parasite ◽  
Sporocyst Residuum ◽  
Size And Shape ◽  
Oocyst Residuum ◽  
Coereba Flaveola

The present study describes a new isosporoid coccidian parasite from the bananaquit Coereba flaveola, in Brazil. This new species is similar to I. cagasebi, but it can be distinguished by the size and shape of Stieda and susbstieda bodies. Isospora coerebae n. sp. oocysts are spheroidal to sub-spheroidal, 24.8 × 23.3 µm, with a smooth and bi-layered wall, ~1.2 µm. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are elongate ovoidal, 17.9 × 10.9 µm. Stieda and substieda bodies are present. Sporocyst residuum is present and sporozoites have a posterior refractile body.

scholarly journals Two new species of Eimeria (Apicomplexa, Eimeriidae) from tree skinks, Prasinohaema spp. (Sauria: Scincidae), from Papua New Guinea

2014 ◽  
Vol 59 (2) ◽  
Author(s):  
Chris McAllister ◽  
Donald Duszynski ◽  
Robert Fisher ◽  
Christopher Austin
Keyword(s):  
Papua New Guinea ◽  
Polar Granule ◽  
New Guinea ◽  
Refractile Body ◽  
Sporocyst Residuum ◽  
Compact Mass ◽  
Two New Species ◽  
Length Width ◽  
Oocyst Residuum

AbstractBetween September 1991 and June 1992, feces from 4 species of tree skinks, Prasinohaema spp. from Papua New Guinea, were collected and examined for coccidia. Two species, P. flavipes and P. prehensicauda were found to harbor eimerians which are described as new. Oocysts of Eimeria krausi sp. nov. from P. flavipes were ellipsoidal to subspheroidal with a smooth bilayered wall and measured (L × W) 19.2 × 16.9 μm, with a length/width (L/W) ratio of 1.1. Micropyle and oocyst residuum were absent but a fragmented polar granule was present. Sporocysts were ellipsoidal, 9.7 × 6.7 μm, L/W of 1.5. Stieda, subStieda and paraStieda bodies were absent. The sporocyst residuum was composed of many small granules in a compact mass between sporozoites. The sporozoites were sausage-shaped, 11.7 × 2.7 μm, in situ, with an ellipsoidal posterior refractile body and a spheroidal anterior refractile body. Oocysts of Eimeria greeri sp. nov. from P. prehensicauda were ellipsoidal with a smooth bilayered wall, (L × W) 23.0 × 18.3 μm, with a L/W of 1.3. Micropyle and oocyst residuum were absent but a fragmented polar granule was present. Sporocysts were ellipsoidal, 9.7 × 8.4 μm, with a L/W of 1.2. Stieda, subStieda and paraStieda bodies were absent. The sporocyst residuum was composed of many large granules in a compact mass between sporozoites. The sporozoites were sausage-shaped, with an ellipsoidal posterior refractile body and a spheroidal anterior refractile body. We document here the first report of coccidia from skinks of the genus Prasinohaema.

The coccidia (Apicomplexa: Eimeriidae) of Caudata (Amphibia), with descriptions of two new species from North America

1993 ◽  
Vol 71 (12) ◽  
pp. 2410-2418 ◽  
Author(s):  
Steve J. Upton ◽  
Chris T. McAllister ◽  
Stanley E. Trauth
Keyword(s):  
New Species ◽  
North America ◽  
Polar Granule ◽  
Shape Index ◽  
Kidney Bean ◽  
Two New Species ◽  
Length Width ◽  
Plethodon Albagula ◽  
Oocyst Residuum ◽  
Taxonomic Summary

Over 300 caudate Amphibia were surveyed for coccidia in North America. Two new species of coccidia (Apicomplexa: Eimeriidae) are described. Oocysts of Eimeria opacum sp.nov. from Ambystoma opacum are spherical to subspherical, rarely ellipsoidal, 29.5 × 28.1 (27–32 × 22–31) μm, and have a shape index (length/width) of 1.05 (1.0–1.4). A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are ellipsoidal to kidney-bean shaped, 17.4 × 9.1 (16–21 × 8–11) μm, with a shape index of 1.92 (1.6–2.3). Sporocysts are unusual in that they are encased in a second, more fragile wall that thins to form membranes at the poles; Stieda and substieda bodies are absent. Oocysts of Isospora hightoni sp.nov. from Plethodon albagula are spherical, rarely subspherical, 22.9 × 22.8 (21–24 × 21–24) μm, with a shape index of 1.0 (1.0–1.04). A micropyle and polar granule are absent, but a delicate oocyst residuum was noted in 13/40 (33%) of the oocysts. Sporocysts are ellipsoidal, 16.6 × 11.1 (14.5–17.5 × 10.5–12) μm, with a shape index of 1.5 (1.4–1.6); Stieda and substieda bodies are present. In addition to the species described herein, a taxonomic summary is provided of the known coccidia from Caudata, with the species E. nipponensis sp.nov., E. pyrrhogaster sp.nov., and E. saitamaensis sp.nov. assigned to previously reported coccidia erroneously assigned to named species.

The Coccidia (Apicomplexa: Eimeriidae) of Anura, with descriptions of four new species

1988 ◽  
Vol 66 (8) ◽  
pp. 1822-1830 ◽  
Author(s):  
Steve J. Upton ◽  
Chris T. McAllister
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Stieda Body ◽  
Thin Wall ◽  
Sporocyst Residuum ◽  
Flexible Wall ◽  
Oocyst Residuum

Four new species of Coccidia (Apicomplexa: Eimeriidae) are described from anurans from Texas and Arkansas, U.S.A. Oocysts of Eimeria flexuosa sp.n. were found in Pseudacris streckeri streckeri and are irregular in shape, long axis 17.0 (15.2–19.2) μm (mean, range), with a thin, flexible wall. Micropyle and oocyst residuum absent; polar granule present. Sporocysts ovoid, 10.3 × 7.3 (9.6–12.0 × 6.4–8.0) μm, with Stieda body and sporocyst residuum. Oocysts of Eimeria streckeri sp.n. were also found in P. s. streckeri and are spherical or subspherical, 18.8 × 18.7(16.8–21.5 × 16.8–20.8) μm, with a thin wall. Micropyle and polar granule absent; oocyst residuum present. Sporocysts ovoid, 11.1 × 7.7 (9.6–12.8 × 7.2–8.8) μm, with Stieda body and sporocyst residuum. Oocysts of Isospora delicatus sp.n. were found in P. s. streckeri and Pseudacris streckeri illinoensis and are spherical or subspherical, 15.8 × 15.7(12.8–16.8 × 12.8–16.8) μm, and have a thin wall. Micropyle, oocyst residuum, and polar granule absent. Sporocysts ovoid, 13.5 × 8.0(11.2–14.8 × 7.2–9.6) μm, with Stieda body and diffuse sporocyst residuum. Oocysts of Isospora fragosum sp.n. were recovered from Gastrophryne olivacea and are spherical, 18.5 (16.8–20.8) μm, and have a thin wall that ruptures easily. Micropyle, polar granule, and oocyst residuum absent. Sporocysts ovoid, 12.7 × 10.9 (11.2–14.4 × 9.6–12.0) μm, lacking Stieda and substieda bodies; large sporocyst residuum present.

The Eimeria (Apicomplexa: Eimeriidae) of Serpentes, with descriptions of three new species from colubrid snakes

1990 ◽  
Vol 68 (5) ◽  
pp. 855-864 ◽  
Author(s):  
Steve J. Upton ◽  
Chris T. McAllister
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Outer Wall ◽  
Stieda Body ◽  
Thin Wall ◽  
Sporocyst Residuum ◽  
Three New Species ◽  
Oocyst Residuum

Three new species of Coccidia (Apicomplexa: Eimeriidae) are described from snakes collected in Texas, U.S.A. Oocysts of Eimeria papillosum sp.nov. were found in Salvadora grahamiae lineata and are cylindrical, 32.0 × 18.0 (28.8–35.2 × 16.0–20.4) μm, with an outer wall studded by numerous papules. A micropyle and oocyst residuum are absent but a polar granule is present. Sporocysts are ellipsoid, possess a sporocyst residuum, and lack a Stieda body. Oocysts of Eimeria serpenticola sp.nov. were found in Thamnophis proximus rubrilineatus and are ellipsoid, 20.3 × 17.5 (18.4–22.4 × 15.8–19.8) μm, with a smooth, thin wall. A micropyle and oocyst residuum are absent but a polar granule is present. Sporocysts are elongate and possess a sporocyst residuum and Stieda body. Oocysts of Eimeria striatula sp.nov. were recovered from Virginia striatula and are spherical, 12.5 (11.2–15.2) μm, with a thin wall. A micropyle and oocyst residuum are absent but a polar granule is present. Sporocysts are elongate and possess a Stieda body and few granules within the sporocyst. A table is provided listing the more than 50 named species of eimerians reported to infect members of the suborder Serpentes.

Two new species of coccidia (A picomplexa: Eimeriidae) from Eumeces fasciatus (Sauria: Scincidae) in Arkansas

1991 ◽  
Vol 69 (8) ◽  
pp. 2028-2030 ◽  
Author(s):  
Steve J. Upton ◽  
Chris T. McAllister ◽  
Stanley E. Trauth
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Shape Index ◽  
Refractile Body ◽  
Biliary Epithelium ◽  
Two New Species ◽  
Intestinal Contents ◽  
Length Width ◽  
Oocyst Residuum

Two new species of coccidia were recovered from the intestinal contents of Eumeces fasciatus from Arkansas and are described. Oocysts of Eimeria fasciatus sp.nov. sporulate endogenously and are cylindrical, 34.9 × 16.2 (32.0–36.2 × 15.2–17.4) μm, shape index (length/width) 2.2 (1.9–2.3). Micropyle and oocyst residuum absent; polar granule present. Sporocysts ellipsoidal, 12.0 × 8.7 (10.4–13.2 × 8.0–9.4) μm, without Stieda or substieda bodies; shape index 1.4 (1.1–1.5). Sporozoites each contain a single spherical posterior refractile body. This coccidian was found to infect the biliary epithelium. Oocysts of Isospora scinci sp.nov. sporulate exogenously and are subspherical, 26.5 × 24.3 (21.6–31.2 × 18.2–27.2) μm; shape index 1.1 (1.0–1.2). Micropyle, oocyst residuum, and polar granule absent. Sporocysts ovoidal, 14.9 × 10.4 (12.0–16.0 × 9.4–11.6) μm, with Stieda and substieda bodies; shape index 1.4 (1.2–1.6). Sporozoites each with anterior and posterior refractile bodies. The site of infection of this species was not determined.

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