Coccidian parasites (Apicomplexa: Eimeriidae) of Chelydra serpentina (Testudines: Chelydridae) from Arkansas and Texas, U.S.A., with descriptions of Isospora chelydrae sp. nov. and Eimeria serpentina sp. nov.

1990 ◽  
Vol 68 (5) ◽  
pp. 865-868 ◽  
Author(s):  
Chris T. McAllister ◽  
Steve J. Upton ◽  
Stanley E. Trauth
Keyword(s):  
New Species ◽  
Body Shape ◽  
Polar Granule ◽  
Shape Index ◽  
Stieda Body ◽  
Chelydra Serpentina ◽  
Conical Projection ◽  
Two New Species ◽  
Coccidian Parasites ◽  
Oocyst Residuum

Two new species of Coccidia (Apicocomplexa: Eimeriidae) are described from the feces of common snapping turtles, Chelydra serpentina serpentina, from Arkansas and Texas, U.S.A. Oocysts of Isospora chelydrae sp.nov. were found in 3/9 (33%) turtles and are symmetrical, 9.6 × 6.8 (9–11 × 6–8) μm, and bear one conical projection on one side of the oocyst and two conical projections on the opposite side of the oocyst, 1.5 – 1.6 μm long; shape index 1.4 (1.2 – 1.6). A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are ellipsoid, 5.8 × 4.0 (5 – 7 × 3.8 – 4.2) μm, with a small Stieda body but no substieda body; shape index 1.5 (1.3 – 1.7). Oocysts of Eimeria serpentina sp.nov. were found in 4/9 (44%) of the turtles and are ellipsoid, 12.8 × 8.1 (11 – 15 × 7 – 10) μm; shape index 1.6 (1.4 – 1.9). A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are ellipsoid, 7.6 × 4.1 (6 – 9 × 4 – 5) μm, each with a Stieda body but a substieda body is absent; shape index 1.8 (1.5 – 2.1). In addition, E. chelydrae Ernst, Stewart, Sampson, and Fincher, 1969 and E. filamentifera Wacha and Christiansen, 1979 were found in 4/9 (44%) and 1/9(11%) hosts, respectively.

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.

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.

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.

Isospora albogularis sp.nov. (Apicomplexa: Eimeriidae) from the yellow-headed gecko, Gonatodes albogularis (Reptilia: Gekkonidae)

1990 ◽  
Vol 68 (6) ◽  
pp. 1266-1267 ◽  
Author(s):  
Steve J. Upton ◽  
Paul S. Freed
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Polar Granule ◽  
Shape Index ◽  
Stieda Body ◽  
Length Width ◽  
A New Species ◽  
Oocyst Residuum

A new species of isosporan was recovered from the fecal contents of three of five yellow-headed geckos, Gonatodes albogularis, collected from Liberia, Guanacaste Province, Costa Rica. Sporulated oocysts of Isospora albogularis sp.nov. are subspherical, 29.5 × 26.9 (26.4–32.0 × 22.4–30.8) μm, with a shape index (length/width) of 1.1 (1.0–1.3). A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are ovoid, 14.9 × 10.8 (13.6–16.0 × 10.2–11.4) μm, with a shape index of 1.4 (1.3–1.5). Both Stieda and substieda bodies are present, and the end opposite to the Stieda body is normally tapered slightly.

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.

scholarly journals A new species of coccidia (Apicomplexa: Eimeriidae) from Cordillera striped shrew-rat, Chrotomys whiteheadi (Rodentia: Muridae), from the Philippines

2014 ◽  
Vol 59 (4) ◽  
Author(s):  
Chris McAllister ◽  
R. Seville ◽  
Donald Duszynski ◽  
Sarah Bush
Keyword(s):  
New Species ◽  
Polar Granule ◽  
The Philippines ◽  
Stieda Body ◽  
Sporocyst Residuum ◽  
Coccidian Parasites ◽  
Length Width ◽  
Measured Length ◽  
A New Species ◽  
Oocyst Residuum

AbstractDuring July 2011, a single Cordillera striped shrew-rat (Chrotomys whiteheadi) was collected from the Philippines and its faeces examined for coccidian parasites. It harboured an eimerian that we describe here as new. Oocysts of Eimeria macarthuri sp. n. were spheroidal to subspheroidal with a bi-layered wall and measured (length × width, L × W) 18.2 × 17.0 μm, with an L/W ratio of 1.1. A micropyle, oocyst residuum and polar granule were absent. Sporocysts were ovoidal, 9.0 × 6.4 μm, with an L/W ratio of 1.3. A nipple-like Stieda body was present as well as a substieda body. A granular sporocyst residuum was present. To our knowledge, E. macarthuri represents the only coccidian ever described from a rodent of the Philippines.

scholarly journals A new species of Isospora (Apicomplexa: Eimeriidae) from eastern coachwhip, Coluber flagellum flagellum (Reptilia: Ophidia) from Oklahoma

2015 ◽  
Vol 60 (3) ◽  
Author(s):  
Chris T. McAllister ◽  
R. Scott Seville ◽  
Matthew B. Connior
Keyword(s):  
New Species ◽  
Polar Granule ◽  
Stieda Body ◽  
Sporocyst Residuum ◽  
Coccidian Parasites ◽  
Length Width ◽  
Measured Length ◽  
A New Species ◽  
Oocyst Residuum

AbstractBetween June 2013 and August 2014, four eastern coachwhips, Coluber flagellum flagellum were collected from Arkansas (n = 2) and Oklahoma (n = 2) and their faeces examined for coccidian parasites. One (25%) harboured an isosporan that we describe here as new. Oocysts of Isospora kiamichiensis sp. n. were spheroidal to subspheroidal with a uni-layered wall and measured (length × width, L × W) 25.0 × 22.2 μm, with an L/W ratio of 1.1. A micropyle, oocyst residuum and polar granule were absent. Sporocysts were ovoidal, 13.9 × 9.4 μm, with an L/W ratio of 1.5. A pronounced, button-like Stieda body was present as well as a substieda body. A sporocyst residuum was present as dispersed granules. This is the first isosporan and fourth coccidian reported from eastern coachwhip snakes. In addition, a single oocyst of an unknown choleoeimerian was recovered from this host.

A new coccidian parasite (Apicomplexa: Eimeriidae: Eimeria) from the southern black racer, Coluber constrictor priapus (Reptilia: Ophidia: Colubridae) from Arkansas, USA

2018 ◽  
Vol 63 (3) ◽  
pp. 558-562
Author(s):  
Chris T. McAllister ◽  
John A. Hnida ◽  
Henry W. Robison
Keyword(s):  
Polar Granule ◽  
Stieda Body ◽  
Coccidian Parasite ◽  
Sporocyst Residuum ◽  
Coluber Constrictor ◽  
Coccidian Parasites ◽  
Oocyst Residuum

AbstractBetween April 2012 and October 2017, 18 southern black racers,Coluber constrictor priapus, were collected from nine counties of Arkansas (n= 13) and McCurtain County, Oklahoma (n= 5) and their faeces examined for coccidian parasites. One of 18 (6%)C. c. priapusharboured an eimerian that we describe here as new. Oocysts ofEimeria dunnisp. nov. were subspheroidal with a lightly pitted bi-layered wall measuring L × W 24.0 × 21.1 and L/W ratio of 1.2. A micropyle was absent but an oocyst residuum and polar granule were present. Sporocysts were ovoidal and measured 11.9 × 8.1 with L/W of 1.5. A Stieda body was present but substieda and parastieda bodies were absent. The sporocyst residuum was composed of medium-sized granules aligned along perimeter of sporocyst or in a dispersed mass. This represents the first valid eimerian reported from the southern black racer.

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.

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