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At least 199 records · Page 11Linked to original sources
PubMed2005

Eimeria hemprichii n. sp. (Apicomplexa: Eimeriidae) from the lizard, Scincus hemprichii (Sauria: Scincidae) in Saudi Arabia.

Eimeria hemprichii n. sp. was described from the gall bladder of the lizard, Scincus hemprichii captured at Gazan Province, western region, Saudi Arabia. Sporulated oocysts are ellipsoidal, 34.6x21.4 (32.5-36.3x20.7-22.5) microm. with smooth greenish-yellow bi-layered wall. Micropyle, polar granule and oocyst residuum are absent. Sporocysts are ellipsoidal, 11.6x8.0 (11.2-12.6 x7.5-8.4) microm. Sporosyst residuum is present, but without stieda or substiedal bodies. Sporozoites are elongate, laying head to tail in sporocyst and each one contains a single spherical posterior re-fracttile body.

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PubMedDate not supplied

[Species of the genus Eimeria (Apicomplexa: Eimeriidae) in giant anteaters (Myrmecophaga tridactyla Linnaeus, 1758) in captivity].

The parasitism of the two giant anteaters adults (Myrmecophaga tridactyla), one male and one female, infected naturally with Eimeria escomeli, E. tamanduae e E. marajoensis was related in the present research. In E. escomeli oocysts were 23.9 +/- 1.89 by 19.7 +/- 1.60 microm and its sporocysts were 11.47 +/- 1.25 by 6.48 +/- 0.80 microm. In E. tamanduae oocysts were 23.52 +/- 0.95 by 20.59 +/- 0.92 microm and its sporocysts were 12.19 +/- 0.65 by 7.15 +/- 0.55 microm. In E. marajoensis oocysts were 13.5 +/- 1.7 by 13.1 +/- 1.8 microm and its sporocysts were 7.4 +/- 0.58 by 5.4 +/- 0.8 microm. Eimeria escomeli was described before parasitizing giants anteater from Bolivia, and it was point out as the first time in Brazil. The presence of E. tamanduae and E. marajoensis parasitizing giant anteaters indicate the possibility of having co-infection of them among animals of the family Myrmecophagidae.

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PubMed2006

Eimeria gazani n. sp. (Apicomplexa:Eimeriidae) from the lizard, Scincus hemprichii (Sauria:Scincidae) in Saudi Arabia.

Eimeria gazani n. sp. was described from the intestine of the lizard, Scincus hemprichii captured at Gazan, western region. Sporulated oocysts ovoidal 23.5 x 19.7 (20.8-25.0 x 19.0-21.2) micro m, with smooth brownish-green bilayered wall. Micropyle present, covered by a dome-shaped cap. Oocyst residu-um and polar granule are present. Sporocysts ellipsoidal, 10.8 x 6.9 (10.0-11.4 x 6.1-7.4) microm., with a prominent Stieda body. Sporocyst residuum present, sporozoites elongate, laying head to tail in sporocysts, each with large and small subspherical refractile globule.

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PubMedDate not supplied

[Coccidia (eimeriidae) of fishes (Cypriniformes) in the continental waters of Russia].

Thorough data on 67 coccidian species of the genera Eimeria, Goussia, and Isospora parasitizing fishes in the continental waters of Russia are given. Authors, year of description, synonyms, morphofunctional organization, and list of the hosts are reported for each species. The paper is supplied with figures of the exogenic stages of coccidia (oocysts).

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PubMed1991

New host and locality records of coccidia (Apicomplexa: Eimeriidae) from rodents in the southwestern and western United States.

One hundred forty-seven murid and heteromyid rodents were collected from various sites in the southwestern and western United States (Arizona, Colorado, New Mexico, Texas, and Utah) and Baja California Norte, Mexico, and their feces were examined for coccidial parasites. Of these, 53 (36%) were infected with at least 1 coccidian; 45 of 53 (85%) of the infected rodents harbored only 1 species of coccidian. Infected rodents included: 10 of 22 (45%) Neotoma albigula, 3 of 11 (27%) Neotoma floridana, 2 of 14 (14%) Neotoma lepida, 15 of 29 (52%) Neotoma micropus, 5 of 8 (63%) Peromyscus crinitis, 6 of 6 (100%) Peromyscus difficilis, 1 of 2 (50%) Peromyscus eremicus, 9 of 34 (26%) Sigmodon hispidis, and 2 of 3 (67%) Sigmodon ochrognathus; 4 Neotoma cinerea, 3 Neotoma devia, 3 Neotoma mexicana, 1 Peromyscus maniculatus, 1 Onychomys leucogaster, 1 Onychomys torridus, 3 Chaetodipus fallax, and 2 Chaetodipus penicillatus were negative. Although no new species was found, the following coccidians were identified from infected rodents: Eimeria albigulae from N. albigula, N. floridana, and N. micropus, Eimeria antonellii from N. albigula and N. micropus, Eimeria ladronensis from N. albigula, N. floridana, N. lepida, and N. micropus, Eimeria arizonensis and Eimeria lachrymalis from P. crinitis and P. difficilis, Eimeria lachrymalis from P. eremicus, Eimeria tuskeegensis from S. ochrognathus, and Eimeria roperi, Eimeria sigmodontis, Eimeria tuskeegensis, Eimeria webbae, and an unidentified species of Eimeria from S. hispidis. This report documents 12 new host and several distributional records for Eimeria species from murid rodents in Arizona, Texas, and Utah.

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PubMed1991

A new species of coccidian (Apicomplexa: Eimeriidae) from the prairie racerunner, Cnemidophorus sexlineatus viridis (Sauria: Teiidae), in Arkansas.

Feces from 26 prairie racerunners, Cnemidophorus sexlineatus viridis Lowe, 1966, from Arkansas, were examined for coccidian parasites. One of these was found to be infected with oocysts of an undescribed eimerian, which is described herein as new. Sporulated oocysts of Eimeria sexlineatus n. sp. were cylindrical, 30.4 x 17.1 (28-32 x 16-19) microns, with a shape index (length/width) of 1.8 (1.6-2.0). A micropyle and oocyst residuum were absent but 1 (to several) polar granule(s) was present. Sporocysts were ellipsoidal, 10.7 x 8.5 (9.6-11.2 x 8.0-8.8) microns, with a shape index of 1.3 (1.2-1.4). A sporocyst residuum was present but Stieda, substieda, and parastieda bodies were absent. Sporozoites were elongate, 13.2 x 2.7 microns (12.0-14.4 x 2.4-3.2) in situ, containing a single, spherical posterior refractile body. Oocysts and endogenous developmental stages were found within the gall bladder epithelium of the infected lizard. This represents the first time a coccidian has been reported from a North American whiptail lizard.

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PubMedDate not supplied

Isospora mcquistioni and Isospora bioccai (Apicomplexa, Eimeriidae): two new coccidian parasites from Carduelis sinica (Passeriformes, Fringillidae).

The following two species are described from Carduelis sinica (Greenfinch) from Italy. The oocysts of Isospora mcquistioni n. sp. were 26.0 x 22.6 (24.0-28.5 x 20.0-24.2) microns and ovoid with a smooth bilayered wall. Neither micropyle nor oocyst residuum were observed. One polar granule was found. Sporocysts were oval, 18.1 x 11.4 (16.0-19.8 x 11.0-12.0) microns, and with a symmetrical Stieda complex. The residuum was compact and spherical. Isospora bioccai n. sp. oocysts were spherical to subspherical and 24.0 x 23.6 (22.0-26.0 x 21.0-25.8) microns. The oocyst wall was smooth and bilayered. A micropyle and oocyst residuum were absent; 4 to 10 elongate polar granules were present. Sporocysts were 19.5 x 11.6 (18.0-20.0 x 10.0-12.4) microns, ellipsoidal, and with a symmetrical Stieda complex. The sporocyst residuum was diffuse and composed of a few granules.

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PubMed1991

Redescription of Eimeria gazella Musaev, 1970 (Apicomplexa: Eimeriidae) from the Arabian gazelle, Gazella gazella arabica (Artiodactyla: Bovidae) in Saudi Arabia.

Eimeria gazella Musaev, 1970 is redescribed for the first time from the feces of 3 of 6 Arabian gazelles, Gazella gazella arabica from the Riyadh Zoo in Saudi Arabia. Oocyst measurements were similar to those reported previously from the goitered gazelle, Gazella subgutturosa, in Kazakhstan (USSR). Except for our observation of many small polar granules, and Stieda body, oocyst morphology was identical to the original description of E. gazella.

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PubMed1991

Coccidian parasites (Apicomplexa: Eimeriidae) of Graptemys caglei and Graptemys versa (Testudines: Emydidae) from Texas.

Nineteen map turtles, Graptemys caglei and Graptemys versa were collected from the Guadalupe and Colorado River watersheds of south-central Texas and examined for coccidial parasites. Thirteen of the 19 turtles (68%), including 11 of 16 (69%) G. caglei and 2 of 3 (67%) G. versa, were infected with at least 1 coccidian. Five Eimeria spp. (E. chrysemydis, E. graptemydos, E. lutotestudinis, E. pseudogeographica, and E. trachemydis) were harbored by G. caglei, and 2 eimerians (E. graptemydos and E. mitraria) infected G. versa. This represents new host records for these previously described coccidians and is the first time parasites have been documented in turtles of both species.

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PubMed1990

Description of the oocysts of Eimeria paludosa (Apicomplexa: Eimeriidae) from Fulica americana (Aves: Gruiformes), with comments on synonyms of eimerian species from related birds.

Between November and December 1988, fecal and intestinal contents were collected from 25 northern American coots, Fulica americana americana, in Arkansas and Texas, and examined for coccidial parasites. Seventeen (68%) of the coots were infected with Eimeria paludosa, herein described; for the first time, photomicrographs of the species are presented. Sporulated oocysts are ovoid, 16.5 x 12.6 (15-23 x 11-14) microns, with a lightly to heavily pitted single-layered wall; an oocyst residuum is absent, but a prominent micropyle is present. A large, or several smaller, polar granule(s) is present, usually located beneath the micropyle. Sporocysts are elongate-ovoid, 10.8 x 6.2 (10-12 x 5-7) microns, with Stieda and substieda bodies. A sporocyst residuum is present, normally composed of very fine faint granules scattered among the sporozoites or, rarely, as a spherical mass. Sporozoites are elongate, 8.7 x 2.7 (7-11 x 2-3) microns, in situ. Each sporozoite contains a spherical-ellipsoid posterior refractile body and occasionally a spherical anterior refractile body. A nucleus is located immediately anterior to the posterior refractile body. The occurrence of E. paludosa in F. a. americana is a new host and geographic record for the parasite. In addition, several of the previously described eimerian species from gruiform birds are proposed to be synonyms of E. paludosa.

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PubMed1990

Isospora daphnensis n. sp. (Apicomplexa: Eimeriidae) from the medium ground finch (Geospiza fortis) from the Galapagos Islands.

In March and April 1987 fecal samples from 237 nestling birds, including 199 from 85 nest sites of Geospiza fortis, 23 from 12 nest sites of Geospiza scandens, 6 from 2 nest sites of Geospiza magnirostris, and 9 from 2 nest sites of hybrids involving Geospiza fuliginosa and G. fortis, were collected from Daphne Major in the Galapagos archipelago and examined for coccidia. Only 3 of 4 nestlings from 1 nest site of G. fortis (1.5%) had oocysts in their feces. Two of the 3 infected nestlings had concurrent infections of Isospora temeraria, and all 3 nestlings were infected with a new species. Isospora daphnensis n. sp. Sporulated oocysts of I. daphnensis n. sp. are ellipsoidal, 27.3 x 23.6 (22-30 x 20-27) microns; a polar body is present, but no oocyst residuum or micropyle occurs. The oocyst wall, approximately 1.5 microns thick, is composed of a mammillated outer layer and thinner inner layer. Sporocysts are ovoid, 15.2 x 10.2 (15-16 x 9-11) microns and have a nipplelike Stieda body and a small substieda body. The sporocysts contain an irregularly shaped, smoothly contoured residuum with uniform granules and 4 sporozoites with a large refractile body at one end and lying randomly in the sporocysts.

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PubMed1990

Double alteration of the small intestine in conventional and gnotobiotic piglets experimentally infected with the coccidium Isospora suis (Apicomplexa, Eimeriidae).

The pathogenicity of the coccidium Isospora suis was studied in 42 conventional and 26 gnotobiotic piglets at 1-13 days post infection (DPI). The prepatent period of the coccidium I. suis was 4.5-5 days. Only in one experiment in conventional piglets the prepatent period of 3.5 days was recorded. At least 9 days pathogenesis of I. suis was recorded during which double alteration of the small intestine occurred. The first alteration was found at 3-4 DPI. The second phase of alterative changes was observed at 8-9 DPI. In comparison with gnotobiotic piglets in conventional piglets clinical signs and pathological changes used to appear one day sooner but reparation and regeneration of alterative changes was quicker. In the first phase of the infection (3-7 or 8 DPI) the heaviest pathological changes were in the posterior jejunum. In the second phase of the infection (8 or 9-12 DPI) the heaviest changes were in the middle jejunum. In short period repeated lesions of mucosal barrier of the small intestine multiply the pathogenicity of I. suis and rank I. suis in front place among other enteropathogens of nursing piglets.

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PubMed1990

Three new species of Eimeria (Apicomplexa: Eimeriidae) from Apalone spinifera pallidus (Testudines: Trionychidae) in Texas, with a redescription of E. amydae.

Three new species of Eimeria are described from pallid spiny softshells, Apalone spinifera pallidus, collected in north-central Texas. Oocysts of Eimeria spinifera n. sp. were found in the feces of 3/9 (33%) turtles and are subspheroid, ellipsoid, or pear-shaped, 16.3 x 14.0 (14-19 x 12-18) microns, with a thin, single-layered wall; shape index 1.2 (1.1-1.3). A micropyle is absent, but an oocyst residuum is present; polar granule present in 16% of the oocysts. Sporocysts are elongate-ovoid, 10.3 x 5.2 (8-12 x 5-6) microns, each with a Stieda body bearing short filaments. Oocysts of Eimeria apalone n. sp. were found in 5/9 (56%) turtles and are ellipsoid, elongate pear-shaped, or subspheroid, 16.8 x 13.2 (12-19 x 10-16) microns, with a thin, single-layered wall; shape index 1.3 (1.0-1.5). A micropyle, oocyst residuum, and polar granule are absent. Sporocysts are elongate-ovoid, 11.3 x 6.2 (9-14 x 5-7) microns, each with a prominent Stieda body. Oocysts of Eimeria pallidus n. sp. were found in 4/9 (44%) A. s. pallidus and are spheroid or subspheroid, 23.4 x 21.6 (18-27 x 17-25) microns, with a thin, single-layered wall; shape index 1.1 (1.0-1.3). A micropyle is absent, but an oocyst residuum is present; polar granule present in 20% of the oocysts. Sporocysts are elongate-ovoid, 14.3 x 6.2 (13-17 x 6-7) microns, each with a Stieda body and short filaments. In addition to the new species, 3 previously described eimerians, including Eimeria amydae Roudabush, 1937, which is redescribed, were also found.

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PubMed1989

Serial transmission of Caryospora bigenetica Wacha and Christiansen, 1982 (Apicomplexa: Eimeriidae) between different species of rodents.

Transmission of Caryospora bigenetica by cannibalism between cotton rats, between cotton rats and mice, and between mice was demonstrated. All experimental animals developed swollen muzzles and scrota 8 days after ingestion of infected tissues. Infections were confirmed by light microscopy of fresh tissue smears. Tissues of cannibalized animals contained caryocysts that, after ingestion by the next host, released sporozoites that underwent merogony, gamogony, sporogony, and caryocyst formation in dermal tissues. This study demonstrates that C. bigenetica can be transmitted by predation between species of rodents and that, in the recipient host, asexual and sexual reproduction occur before caryocysts appear.

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PubMed1989

Coccidian parasites (Apicomplexa: Eimeriidae) from insectivores. VII. Six new species from the hairy-tailed mole, Parascalops breweri.

Sixteen hairy-tailed moles, Parascalops breweri, collected from the northeastern U.S.A. were examined for coccidian oocysts; all were infected with multiple species of coccidia and 3 genera were represented. Two cyclosporans, 2 eimerians, and 2 isosporans are described as new species. Sporulated oocysts of Cyclospora ashtabulensis n. sp. are subspheroid to ellipsoid, 18 X 14 (14-23 X 11-19) microns, and sporocysts are ovoid, 12 X 7 (8-14 X 5-9) microns; C. ashtabulensis was found in 7 of 16 (44%) moles. Sporulated oocysts of Cyclospora parascalopi n. sp. are spheroid, 17 X 14 (13-20 X 11-20) microns, and sporocysts are ovoid, 11 X 7 (8-14 X 5-8) microns; C. parascalopi was found in 8 of 16 (50%) moles. Sporulated oocysts of Eimeria aethiospora n. sp. are subspheroid to ellipsoid, 19 X 13 (15-24 X 10-16) microns, and sporocysts are ovoid, 11 X 6 (8-13 X 4-7) microns; E. aethiospora was found in 4 of 16 (25%) moles. Sporulated oocysts of Eimeria titthus n. sp. are subspheroid, 16 X 14 (13-19 X 11-17) microns, and sporocysts are ellipsoid, 11 X 6 (9-13 X 4-7) microns; E. titthus was found in 4 of 16 (25%) moles. Sporulated oocysts of Isospora ashtabulensis n. sp. are ellipsoid, 20 X 14 (16-24 X 10-18) microns, and sporocysts are ovoid, 10 X 7 (7-14 X 5-10) microns; I. ashtabulensis was found in 5 of 16 (31%) moles.(ABSTRACT TRUNCATED AT 250 WORDS)

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PubMed1989

Coccidian parasites (Apicomplexa: Eimeriidae) from insectivores. VIII. Four new species from the star-nosed mole, Condylura cristata.

Twenty-four star-nosed moles, Condylura cristata, collected from the northeastern United States (Maine, Massachusetts, Ohio, Vermont) were examined for coccidian oocysts. All of the moles were infected with from 1 to 4 species of coccidia representing 2 eimerian and 3 isosporan spp., but oocysts of only 4 of these species were present in sufficient numbers for detailed study; these are described as new. Sporulated oocysts of Eimeria condylurae n. sp. were subspheroid, 17.7 x 15.7 (17-23 x 14-21) microns, with sporocysts ellipsoid, 11.7 x 5.6 (11-14 x 5-6) microns; E. condylurae was found in 3 of 24 (12.5%) moles. Sporulated oocysts of Isospora condylurae n. sp. were ellipsoid, 19.4 x 9.3 (17-21 x 8-11) microns, with sporocysts ovoid, 11.7 x 5.8 (11-13 x 5-7) microns; I. condylurae was found in 12 of 24 (50%) moles. Sporulated oocysts of Isospora cristatae n. sp. were ellipsoid, 15.7 x 10.1 (13-18 x 9-13) microns, with sporocysts ovoid, 11.0 x 5.7 (10-12 x 5-7) microns; I. cristatae was found in 19 of 24 (79%) moles. Sporulated oocysts of Isospora lamoillensis n. sp. were ellipsoid, tapering at both ends, 21.6 x 13.0 (19-23 x 11-14) microns, with sporocysts spindle-shaped, 14.9 x 7.7 (14-16 x 7-8) microns; I. lamoillensis was found in 2 of 24 (8%) moles. Although the second eimerian seen was in 7 of the 24 (29%) moles from Massachusetts, Ohio, and Vermont, there were not enough sporulated oocysts to study in detail to warrant a new species description.(ABSTRACT TRUNCATED AT 250 WORDS)

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PubMed1989

Eimeria lancasterensis (Apicomplexa: Eimeriidae) from the eastern fox squirrel, Sciurus niger (Rodentia: Sciuridae), in north-central Texas.

Eimeria lancasterensis Joseph, 1969, is reported for the first time from the feces of 10 of 11 (91%) eastern fox squirrels, Sciurus niger ludovicianus, in Dallas and Johnson counties, Texas. Oocyst measurements were similar to those reported previously from the eastern gray squirrel, Sciurus carolinensis carolinensis, in Massachusetts. Except for our observation of a substieda body, oocyst morphology was identical to the original description of E. lancasterensis.

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