scholarly journals Eimerid coccidia from capybaras (Hydrochoerus hydrochaeris) in southern Bahia, Brazil

2008 ◽  
Vol 28 (7) ◽  
pp. 323-328 ◽  
Author(s):  
George R. Albuquerque ◽  
Bruno P. Berto ◽  
Lilian S. Catenacci ◽  
Selene S. da C. Nogueira ◽  
Sérgio Luiz G. Nogueira-Filho ◽  
...  
Keyword(s):  
South America ◽  
Polar Granule ◽  
Stieda Body ◽  
Northeastern Brazil ◽  
The South ◽  
Sporocyst Residuum ◽  
Polar Granules ◽  
Hydrochoerus Hydrochaeris ◽  
In Captivity ◽  
Southern Bahia

Two eimerid coccidia are reported in a capybara (Hydrochoerus hydrochaeris) population kept in captivity in the south of Bahia, northeastern Brazil (14º 47' 57.89"S and 39º 10' 10.58" W). Oocysts of Eimeria ichiloensis are subspheroidal to ellipsoidal, 26.2 x 21.7mm with bi-layered wall, the outer yellow and sculptured and the inner, dark and smooth. Residuum is absent, but usually 2-3 polar granules are present. Sporocysts are ovoid, 12.0 x 7.6mm. Stieda body and sporocyst residuum are present. Oocysts of Eimeria trinidadensis are subspheroidal to ellipsoidal, 22.2 x 19.6mm with bi-layered wall, the outer yellow and smooth, and the inner dark and smooth. Residuum is absent, but one polar granule is present. Sporocysts are ovoid, 11.0 x 6.9mm. Stieda body and sporocyst residuum are present. Based on these descriptions and previous ones it can be concluded that these coccidea species are widely dispersed in capybaras in South America.

scholarly journals Caryospora bigenetica (Apicomplexa: Eimeriidae) in South America: new hosts and distribution records

2015 ◽  
Vol 24 (1) ◽  
pp. 101-104 ◽  
Author(s):  
Lúcio André Viana ◽  
Kamilla Costa Mecchi ◽  
Leonardo França do Nascimento ◽  
Heitor Miraglia Herrera ◽  
Paula Helena Santa-Rita ◽  
...  
Keyword(s):  
South America ◽  
Polar Granule ◽  
First Record ◽  
Stieda Body ◽  
Mato Grosso ◽  
Sporocyst Residuum ◽  
The Family ◽  
New Hosts ◽  
Crotalus Durissus ◽  
Bothrops Moojeni

The coccidian Caryospora bigenetica was first described in the snake Crotalus horridus (Viperidae) from United States of America. This study represents the first record of the occurrence of C. bigenetica in snakes in South America. Feces were sampled between November 2013 and May 2014 from 256 wild snakes maintained in scientific breeding facilities in the states of Mato Grosso do Sul (MS; n = 214) and Rio de Janeiro (RJ; n = 42), Brazil. Caryospora bigenetica was found in 14 (5.6%) snakes, all belonging to the family Viperidae. Ten Bothrops moojeni and two Crotalus durissus from MS were infected. The coccidian was also found in one C. durissus and in one Bothrops jararacussu from the state of RJ. The oocysts were spherical with a double wall, the exterior lightly mammillated, striations apparent in transverse view, 13.0 µm (12 – 14); polar granule fixed in the internal wall. Sporocysts oval or pyriform, 10.0 × 8.0 µm (9 – 11 × 8 – 9); Stieda body discoid; sub-Stieda body present; sporocyst residuum present, formed by a group of spheroid bodies between sporozoites. This study increases the number of viperid hosts of C. bigenetica and expands the geographical distribution to South America.

Two new Isospora species from the saffron finch, Sicalis flaveola in Brazil

2011 ◽  
Vol 56 (3) ◽  
Author(s):  
Cleide Coelho ◽  
Bruno Berto ◽  
Daniel Neves ◽  
Vinícius Oliveira ◽  
Walter Flausino ◽  
...  
Keyword(s):  
South America ◽  
Polar Granule ◽  
Common Species ◽  
Refractile Body ◽  
Stieda Body ◽  
Sporocyst Residuum ◽  
Coccidian Species ◽  
Oocyst Residuum

AbstractTwo new coccidian species (Protozoa, Apicomplexa, Eimeriidae) are reported from the saffron finch Sicalis flaveola Linnaeus, 1766, a very common species in South America. Isospora cetasiensis sp. nov. oocysts are subspherical to ellipsoidal, 23.1 × 21.6 μm, with smooth, bilayered wall, ∼1.0 μm. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are ovoidal, 15.1 × 10.9 μm. Stieda body is knob-like and substieda body is rounded. Sporocyst residuum is composed of many scattered granules and spherules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. Isospora sicalisi sp. nov. oocysts are subspherical to ellipsoidal, 27.5 × 25.2 μm, with a smooth, bilayered wall, ∼1.1 μm. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are ellipsoidal, 17.2 × 11.7 μm. Stieda body is knob-like and substieda body is trapezoidal. Sporocyst residuum is composed of scattered granules and spherules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus.

Isospora massardi sp. nov. (Apicomplexa: Eimeriidae) from the white-necked thrush Turdus albicollis (Passeriformes: Turdidae) from Brazil

2014 ◽  
Vol 59 (2) ◽  
Author(s):  
Bruno Lopes ◽  
Bruno Berto ◽  
Hermes Luz ◽  
Gideão Galvão ◽  
Ildemar Ferreira ◽  
...  
Keyword(s):  
South America ◽  
New World ◽  
Common Species ◽  
Stieda Body ◽  
Sporocyst Residuum ◽  
Polar Granules ◽  
Coccidian Species ◽  
Oocyst Residuum

AbstractA new coccidian species (Protozoa: Apicomplexa: Eimeriidae) are reported from the white-necked thrush Turdus albicollis Vieillot, 1818, a very common species in South America. Isospora massardi sp. nov. oocysts are subspherical, 18.6 × 17.7 μm, with smooth, bilayered wall, ∼0.9 μm. Micropyle, oocyst residuum are absent, but two polar granules are frequently present. Sporocysts are ovoidal, 14.8 × 9.3 μm. Stieda body is knob-like to rounded and substieda body is rounded. Sporocyst residuum is composed of scattered spherules of different sizes. Sporozoites are vermiform with posterior and anterior refractile bodies and a nucleus. This is the sixth description of an isosporoid coccidium infecting a New World turdid bird.

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 Isospora albicollis (Apicomplexa: Eimeriidae) in thrushes Turdus spp. (Passeriformes: Turdidae), in southeastern Brazil

2017 ◽  
Vol 26 (2) ◽  
pp. 231-234 ◽  
Author(s):  
Irlane Faria de Pinho ◽  
Lidiane Maria da Silva ◽  
Mariana Borges Rodrigues ◽  
Mariana de Souza Oliveira ◽  
Bruno do Bomfim Lopes ◽  
...  
Keyword(s):  
National Park ◽  
Polar Granule ◽  
Refractile Body ◽  
Wide Distribution ◽  
Stieda Body ◽  
Southeastern Brazil ◽  
New Host ◽  
Sporocyst Residuum ◽  
New Localities ◽  
Oocyst Residuum

Abstract The aim of the present study was to report and describe Isospora albicollis Lainson and Shaw, 1989 parasitizing a white-necked thrush Turdus albicollis Vieillot, 1818 and a pale-breasted thrush Turdus leucomelas Vieillot, 1818 in two different localities: the Itatiaia National Park and Cacaria, in southeastern Brazil. The oocysts identified were ovoidal, 24.4 × 19.7 μm, with a smooth, bilayered wall, around 1.4 μm thick. Oocyst residuum was absent, but a micropyle and a polar granule were present. The sporocysts were ellipsoidal, 15.4 × 10.1 μm. The Stieda body was knob-like to rounded and the sub-Stieda body was prominent and wide. Sporocyst residuum was present, usually as a cluster of granules that appear to be membrane-bounded. The sporozoites were vermiform with one posterior refractile body and a centrally located nucleus. Besides recording the new host T. leucomelas, the identification of I. albicollis in the Itatiaia National Park and Cacaria, in southeastern Brazil, provide records of new localities for its parasitism, and reveals the wide distribution and dispersion of this coccidium in Brazil.

Eimeria psittacarae n. sp. (Apicomplexa: Eimeiriidae) from white-eyed parakeets Psittacara leucophthalmus (Müller, 1776) (Psittaciformes: Psittacidae) kept for rehabilitation and reintroduction in the Parque Nacional da Serra dos Órgãos, Southeastern Brazil

Zootaxa ◽  
2018 ◽  
Vol 4459 (1) ◽  
pp. 164
Author(s):  
PRISCILA TUCUNDUVA ◽  
MARIANA BORGES RODRIGUES ◽  
RAQUEL BATISTA JUNGER DE CARVALHO ◽  
BRUNO PEREIRA BERTO
Keyword(s):  
New Species ◽  
New World ◽  
Refractile Body ◽  
Stieda Body ◽  
Southeastern Brazil ◽  
Sporocyst Residuum ◽  
Polar Granules ◽  
A New Species ◽  
Oocyst Residuum

A new species of coccidia (Protozoa: Apicomplexa: Eimeriidae) found parasitizing the white-eyed parakeet Psittacara leucophthalmus (Müller, 1776) in Brazil is described. Eimeria psittacarae n. sp. has oocysts that are ellipsoidal, 34.8 × 24.3 μm, with smooth, bilayered wall, ~1.7 μm thick. Micropyle present. Oocyst residuum absent, but one or two polar granules are present. Sporocysts are elongate ellipsoidal, 19.2 × 9.7 μm. Stieda body knob-like and sub-Stieda body rounded. Sporocyst residuum is composed of granules that appear to be membrane-bounded. Sporozoites are vermiform with one refractile body and a nucleus. This is the sixth description of an eimeriid coccidium parasitizing a New World psittacine. 

A new fossil cricetid (Rodentia, Sigmodontinae) from northeastern Brazil with remarks on small mammal extinctions in the tropical Quaternary

2020 ◽  
Vol 101 (4) ◽  
pp. 1133-1147
Author(s):  
Simone B das Neves ◽  
Ulyses F J Pardiñas ◽  
Patrícia Hadler ◽  
Elver L Mayer ◽  
Ana M Ribeiro
Keyword(s):  
New Species ◽  
South America ◽  
Small Mammal ◽  
Late Quaternary ◽  
Northeastern Brazil ◽  
The South ◽  
Quaternary Deposits ◽  
Extant Species ◽  
Genetic Features ◽  
History Of

Abstract The rare cricetid rodent Bibimys Massoia, 1980 contains three extant species that are distributed in the lowlands of eastern South America between 35°S and 20°S and distinguished mostly by subtle morphological and genetic features. Several fragmented jaws belonging to this genus were recovered from Late Quaternary deposits located in northeastern Brazil, forming part of a rich archaeological and paleontological small mammal assemblage that has been recovered from caves in the Serra da Capivara, state of Piauí. This material is described herein as belonging to a new species, the most hypsodont member of the genus. The specimens also represent an extralimital occurrence of this sigmodontine, as the nearest extant population of Bibimys is ~1,200 km to the south. Because there are few reliable records of extinct small mammals from the Pleistocene–Holocene transition on the South American continent, in describing this new sigmodontine we extend the records of past biodiversity preserved in the Quaternary deposits of tropical South America. This new species likewise highlights that the Serra da Capivara deposits are promising for understanding the evolutionary history of cricetid rodents.

Coccidial dispersion across trans- and cis-Andean antbirds (Passeriformes: Thamnophilidae): Isospora sagittulae (Apicomplexa: Eimeriidae) from nonsympatric hosts

2014 ◽  
Vol 92 (5) ◽  
pp. 383-388 ◽  
Author(s):  
B.P. Berto ◽  
B.doB. Lopes ◽  
R.D. Melinski ◽  
A.H.N. de Souza ◽  
C.C. Ribas ◽  
...  
Keyword(s):  
Brazilian Amazon ◽  
Refractile Body ◽  
Stieda Body ◽  
Amazon Forest ◽  
Sporocyst Residuum ◽  
Polar Granules ◽  
Common Scale ◽  
Hylophylax Naevioides ◽  
Oocyst Residuum

Isospora sagittulae McQuistion and Capparella, 1992 (Protozoa: Apicomplexa: Eimeriidae) is reported from White-throated Antbirds (Gymnopithys salvini (Berlepsch, 1901)) and from Common Scale-backed Antbirds (Willisornis poecilinotus (Cabanis, 1847)), which are thamnophilid birds from the Brazilian Amazon. Its oocysts are ovoidal to ellipsoidal, 28.4 μm × 22.4 μm, with smooth, bilayered wall, 1.1 μm. Micropyle and oocyst residuum are absent, but one to three polar granules are present. Sporocysts are subspherical to ovoidal, 15.0 μm × 12.6 μm. Stieda body thin and flattened and substieda body triangular to round. Sporocyst residuum composed of scattered granules. Sporozoites with refractile body and nucleus. This coccidium was originally described from the Spotted Antbird (Hylophylax naevioides (Lafresnaye, 1847)), a trans-Andean antbird that is not sympatric with G. salvini and W. poecilinotus, which are cis-Andean antbirds from lowland Amazon forest; therefore, this current study presents some assumptions to explain the dispersion of I. sagittulae among antbird species.

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.

scholarly journals Isospora machadoae sp. nov. (Protozoa: Apicomplexa: Eimeriidae), a new coccidian species from white-necked thrushes Turdus albicolis (Passeriformes: Turdidae) of South America

2018 ◽  
Vol 35 ◽  
pp. 1-4 ◽  
Author(s):  
Irlane F. de Pinho ◽  
Lidiane M. da Silva ◽  
Mariana B. Rodrigues ◽  
Bruno do B. Lopes ◽  
Mariana S. Oliveira ◽  
...  
Keyword(s):  
South America ◽  
Clinical Signs ◽  
Refractile Body ◽  
Southeastern Brazil ◽  
Ecological Niches ◽  
Sporocyst Residuum ◽  
Polar Granules ◽  
Parque Nacional Do Itatiaia ◽  
Coccidian Species ◽  
Oocyst Residuum

A new coccidian species parasitizing white-necked thrushes Turdus albicollis Vieillot, 1818 is described from the Parque Nacional do Itatiaia, in Southeastern Brazil. Isospora machadoae sp. nov. has oocysts that are sub-spherical, 22.2 × 21.2 µm, with bilayered wall, ~1.3 μm thick. Outer layer is rough with micropyle and micropyle cap. Oocyst residuum is absent, but one or two polar granules are present. Sporocysts are ellipsoidal, 13.3 × 9.7 µm. The Stieda body is flattened to half-moon-shaped and substieda body rounded. Sporocyst residuum is present, composed of scattered spherules of different sizes. Sporozoites are vermiform with a refractile body and a nucleus. These parasitized thrushes had no apparent clinical signs of coccidiosis or high densities of oocysts in feces. This condition may be associated with a specific low pathogenicity of I. machadoae sp. nov. and/or with the conserved habitat of these birds, which ensures the ecological niches and thus the immunocompetence to wildlife.

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