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  • 11
    Electronic Resource
    Electronic Resource
    Comparative Study of Ultrastructure of Interlamellar and Intralamellar Types of Henneguya exilis Kudo from Channel Catfish (1978)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 25 (1978), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. The inter- and intralamellar types of Henneguya exilis Kudo (Myxosporida) infections from channel catfish are similar in spore structure and sporogenesis, but differ in the structure of their plasmodium wall and surface coat and in their relationship with the host cells. The 2 clinical types differ also in the sites of development and growth patterns of plasmodia within a gill filament. Interlamellar plasmodia are limited by 2 outer unit membranes which give rise to both single-and double-membraned pinocytic canals. Intralamellar plasmodia are limited by a single outer unit membrane which gives rise to single-membraned pinocytic canals. Interlamellar plasmodia are covered by a fine granular coat of highly variable thicknesses; in some regions there is direct contact between the parasite and cells of the host. There is some evidence that host cell cytoplasm as well as interstitial material are taken in by interlamellar plasmodia. In contrast, intralamellar plasmodia are covered by a fine granular coat of almost uniform thickness, which prevents direct contact between the parasite and cells of the host; probably only interstitial material is taken by these plasmodia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1978.tb03868.x
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  • 12
    Electronic Resource
    Electronic Resource
    Two new species of Isospora (Apicomplexa: Eimeriidae) from passeriform birds of South America (1985)
    Springer
    Systematic parasitology 7 (1985), S. 227-229 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Two new species of Isospora (Apicomplexa: Eimeriidae) are described from the faeces of passeriform birds of South America. I. cyanocoracis n. sp. is described from Cyanocorax chrysops (Passeriformes: Corvidae) and I. paroariae n. sp. from Paroaria coronata (Passeriformes: Emberizidae). I. cyanocoracis oocysts are spherical or subspherical, 28.7×26.8 μm (25.0–30.5×24.5–29.0), with bi-layered wall about 2.0 μm thick. Micropyle and oocyst residuum are absent; large polar granule present. Sporocysts are ovoid, 19.3×11.4 μm (17.0–21.0×10.5–12.2), with smooth, single-layered wall about 0.8 μm thick. Stieda and substiedal bodies and sporocyst residuum are present. Sporozoites 12.2×4.2 μm (10.5–15.0×3.5–4.5), possess spherical anterior and posterior refractile bodies. I. paroariae oocysts are spherical or subspherical, 22.3×21.4 μm (19.5–25.5×18.5–24.0), and have bi-layered wall about 1.8 μm thick. Micropyle, polar granule, and oocyst residuum are absent. Sporocysts ovoid, 15.2×10.0 μm (14.0–16.5×8.0–11.5), possess smooth, single-layered wall about 0.7 μm thick. Stieda and substiedal bodies and sporocyst residuum are present. Sporozoites elongate, 11.3×3.4 μm (10.0–13.5×3.2–4.0), have single, large, posterior refractile body. ac]19840712
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011453
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  • 13
    Electronic Resource
    Electronic Resource
    A review of the genus Caryospora Léger, 1904 (Apicomplexa: Eimeriidae) (1986)
    Springer
    Systematic parasitology 8 (1986), S. 3-21 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The genus Caryospora (Apicomplexa, Eimeriorina) contains 30 species of coccidia that develop primarily in reptiles and predatory birds. Recent studies have shown that some species of Caryospora are heteroxenous, with both asexual and sexual phases of parasite development occurring in the intestinal epithelium of a predatory reptile or bird and in dermal connective tissues of rodents. The life-cycle of these Caryospora spp. is distinct from all known genera of the Eimeriidae. In this paper we present a review of and redefine the genus Caryospora, present succinct taxonomic descriptions, synonyms and lapsi, and provide line drawings (if available) of oocysts of each of the described species. ac]19841022
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00010305
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  • 14
    Electronic Resource
    Electronic Resource
    Eimeria forresteri n.sp. (Apicomplexa: Eimeriidae) from Ramphastos toco and a redescription of Isospora graculai from Gracula religiosa (1984)
    Springer
    Systematic parasitology 6 (1984), S. 237-240 
    Details
    ISSN: 1573-5192
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Eimeria forresteri n.sp. is described from Ramphastos toco (Piciformes: Ramphastidae) and Isospora graculai Bhatia, Chauhan, Arora & Agrawal, 1973 is redescribed from Gracula religiosa (Passeriformes: Sturnidae). E. forresteri oocysts are ellipsoid, 24.5 by 17.8 μm (21.0 to 27.0 by 16.0 to 19.5), and have a trilayered wall about 1.5 μm thick. One to three polar granules are present; micropyle and oocyst residuum are absent. Sporocysts are ellipsoid, 14.8 by 7.3 μm (12.0 to 17.0 by 6.0 to 8.0), with a smooth, thin wall. Stieda and substieda bodies and sporocyst residuum are present. Sporozoites measure 9.2 by 3.4 μm (6.0 to 12.0 by 3.0 to 4.5), with anterior and posterior refractile bodies. I. graculai oocysts are subspherical, 24.6 by 22.4 μm (20.0 to 27.8 by 20.0 to 24.0), and have a single-layered wall about 1.5 μm thick. One or two polar granules are present; micropyle is absent. Oocyst residuum is sometimes present, consisting only of a few indistinct granules. Sporocysts are ovoid, 17.7 by 11.6 μm (15.0 to 20.0 by 10.0 to 13.0), with a thin, smooth wall. Stieda and substieda bodies and sporocyst residuum are present. Sporozoites measure 14.5 by 3.5 μm (12.0 to 16.5 by 3.0 to 3.8), with anterior and posterior refractile bodies. ac]19831122
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00009233
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  • 15
    Electronic Resource
    Electronic Resource
    Excystation ofIsospora suis Biester, 1934 of swine (1983)
    Springer
    Parasitology research 69 (1983), S. 27-34 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The in vitro excystation of sporozoites ofIsospora suis Biester 1934 is described. Sporocysts ofI. suis lack a Stieda body. Upon incubation in 0.75% sodium taurocholate or in 0.25% trypsin+0.75% sodium taurocholate excystation solutions, sporozoites were released by separation of the sporocyst wall into four plates. Occasionally, the sporocyst wall did not separate completely but opened partially and released the sporozoite. At the time of excystation, sporozoites were short and broad but became elongated after 5 to 10 min in the excystation fluids. Elongate sporozoites measuring 11.7×3.8 μm, had a pointed anterior end and a nucleus located in the posterior half of the cell. Living sporozoites exhibited gliding movements, side-to-side flexion, and probed with their anterior ends. Incubation in 5.25% sodium hypochlorite removed the oocyst walls from most oocysts. Sporozoites did not excyst from sporocysts that were released during treatment with sodium hypochlorite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00934007
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