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  • 1
    Online Resource
    Online Resource
    [Verbundprojekt GBIF Infomationssystem Bodenzoologie: Aufbau einer Metadatenbank mit umfassendem ökologisch-taxonomischem Recherchesystem als öffentlich zugängliches Werkzeug der bodenbiologischen Biodiversitätsforschung] : Schlussbericht : Berichtszeitraum: 01.11.2009-31.03.2013 = The edaphobase project of GBIF-Germany - development of a soil-zoological meta-data warehouse with comprehensive ecological and taxonomy query tools as a publicly accessible tool for biological soil biodiversity research (2013)
    Görlitz : Senckenberg Museum für Naturkunde Görlitz
    Details Availability
    Keywords: Forschungsbericht ; Bodenbiologie
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (92 Seiten, 4,7 MB) , Diagramme
    URL: https://edocs.tib.eu/files/e01fb16/856721530.pdf
    URL: https://doi.org/10.2314/GBV:856721530
    DOI: 10.2314/GBV:856721530
    Language: German
    Note: Förderkennzeichen BMBF 01LI0901A. - Verbund-Nummer 01075421 , Paralleltitel dem englischen Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Mit deutscher und englischer Zusammenfassung
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  • 2
    Electronic Resource
    Electronic Resource
    A presumptive ciliary photoreceptor in larval Gyrocotyle urna Grube and Wagener (Cestoda) (1984)
    Springer
    Zoomorphology 104 (1984), S. 21-25 
    Details
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The fine structure of a paired lamellate body in the anterior region of the lycophora larva of Gyrocotyle urna is described. Each structure is built up by one specialized cell. Lamellae derive from membranes of about 15 cilia that protrude into an intracellular cavity. The lamellae divide into several flattened branches and are rolled up forming a whorl. The lamellate body is presumed to have photoreceptory function. Comparative deliberations are made for similar structures within several platyhelminths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312167
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ultrastructural studies on the reproductive system of Gyrocotylidea and Amphilinidea (Cestoda) (1987)
    Springer
    Zoomorphology 107 (1987), S. 293-297 
    Details
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The vitellaria, vitellocyte development and vitelloduct of Gyrocotyle urna are described at the ultrastructural level. Vitellar follicles are surrounded by an extracellular lamina; vitellocytes and the periphery of the follicles are enclosed by a cytoplasmic sheath. Immature vitellocytes are spherical and show a high nucleus-to-plasma ratio. During maturation of vitellocytes their cytoplasmic content increases and numerous dictyosomes, endoplasmic reticulum, egg-shell granules and lipid droplets are formed. Lipid droplets and egg-shell granules fill most of the volume of mature vitellocytes. The vitelloduct is ciliated and shows intraepithelial nuclei and intraluminal folds. No cell borders have been found within the vitelloduct. Vitellogenesis and the vitelloduct morphology of Gyrocotyle are compared with those of other parasitic Plathelminthes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312175
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrastructure of the lycophora larva of Gyrocotyle urna (Cestoda, Gyrocotylidea) (1987)
    Springer
    Zoomorphology 107 (1987), S. 88-95 
    Details
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The ultrastructure of the protonephridial system of the lycophore larva of Gyrocotyle urna Grube and Wagener, 1852, is described. It consists of six terminal cells, at least two proximal canal cells, two distal canal cells and two nephridiopore cells. The terminal cells and the proximal canal cell build up the filtration weir with its two circles of weir rods. The proximal canal cell constitutes a solid, hollow cylinder without a cell gap and desmosome. The distal canal cell is characterized by a strong reduction of the canal lumen by irregularly shaped microvilli. The nephridiopore region is formed by a nephridiopore cell; its cell body is located at some distance proximally within the larva. The connection among different canal cells is brought about by septate desmosomes. Morphological, evolutionary and functional aspects of the protonephridial system within Platyhelminthes are discussed. The structure of the proximal canal cells without a desmosome is considered an autapomorphy of Cestoda.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312118
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  • 5
    Electronic Resource
    Electronic Resource
    Ultrastructure of the lycophora larva of Gyrocotyle urna (Cestoda, Gyrocotylidea) (1987)
    Springer
    Zoomorphology 106 (1987), S. 352-360 
    Details
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The fine structure of the ciliated epidermis, the body musculature and the neodermis anlage cells of the free-swimming lycophora larva of Gyrocotyle urna Grube and Wagener, 1852, is described. The epidermis is syncytial and covers the whole body including a caudal cavity into which the larval hooks protrude. It contains several types of vesicles, mitochondria and membrane whorls but lacks nuclei, dictyosomes and endoplasmic reticulum. The locomotory cilia exhibit single rostrally directed rootlets. The body musculature consists of about 25 longitudinal and 42 circular muscles. Their nuclei are located proximally to the contractile elements. The neodermis anlage cells show numerous dictyosomes, elaborated cisternae of endoplasmatic reticulum, typical coated vesicles and membranous bodies. Extrusions of these cells do not penetrate the epidermis but contact it by desmosoms. The evolution of epidermal and neodermal structures of Gyrocotyle and other parasitic Platyhelminthes is discussed. The probable consequences of the lack of some types of organelles in the epidermis of Neodermata are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312258
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrastructure of the lycophora larva ofGyrocotyle urna (Cestoda, Gyrocotylidea) (1990)
    Springer
    Zoomorphology 109 (1990), S. 319-328 
    Details
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The fine structure of the glands of the lycophora larva ofGyrocotyle urna is described. There are four pairs of different glands which can be differentiated by the ultrastructure of their vesicles, their location and their gland pores. Their cell bodies are located at the transition from the median to the posterior third of the larva. Gland ducts formed by extensions of the gland cells run anteriorly and terminate at the anterior tip of the larva. In the cytoplasm of the terminal duct regions peripheral microtubules are found. The structure and function of the glands inGyrocotyle is discussed with regard to the evolution of cestodes and other Neodermata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00803572
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Ultrastructural studies on the reproductive system of Gyrocotylidea and Amphilinidea (Cestoda) (1988)
    Springer
    Parasitology research 74 (1988), S. 363-370 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The ultrastructure of the vitellar follicles, vitellocyte development, and the vitelloduct are described. The follicles are enclosed in a cytoplasmic sheath that sends processes toward the follicle center, filling the space between the vitellocytes. Immature vitellocytes are rounded and show few organelles. During maturation, the vitellocytes increase in volume and a well-elaborated endoplasmic reticulum and numerous dictyosomes are built up; shell protein vesicles and eventually lipid droplets are synthesized. In mature vitellocytes, shell protein vesicles and lipid droplets fill most of the cell volume and the amount of free cytoplasm is greatly reduced. The vitelloduct is ciliated and folds arising from the duct wall extend into the lumen. The nuclei of the duct cytoplasm are intraepithelial; cell borders or desmosomes within the duct wall were not observed. The contraluminal membrane of the vitelloduct shows elaborated infoldings, which occur less extensively if vitellocytes are present within the duct lumen. Vitellocyte development of Amphilina is compared with that of other Platyhelminthes. The morphology and function of vitelloducts and other genital ducts in Neodermata are discussed. The occurrence of syncytial epithelia in genital ducts is considered to be an autapomorphy of Cestoda.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00539459
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    Paper (German National Licenses)
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