The ultrastructure, based on stereoscan observations, of the oral sucker of the cercaria of Schistosoma mansoni with special reference to penetration

Robson, Richard T.; Erasmus, David A.

doi:10.1007/bf00259532

Cited by 33 publications

(8 citation statements)

References 10 publications

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“…The ultrastructure of the epidermis and its sensory re- ceptors has also been focused in Trematoda, special attention beeing paid to the function of the epidermis in the finding of a host and in the adaptation of the parasites to the final host. Sensory structures have been observed in Digenea by Dixon & Mercer (1965), Morris & Threadgold (1967), Silk & Spence (1969), Chapman & Wilson (1970), Erasmus (1970), Robson & Erasmus (1970), Storch (1970), Wilson (1970), Matricon-Condran (1971), Morris (1971), Nuttman (1971), Bogitsch (1972) Kerie (1973), Nollen & Nadakavukaren (1974), and Ebrahimzadeh (1974), and in Monogenea by Halton & Morris (1969), Lyons (1969~1, 1969bLyons (1969~1, , 1972Lyons (1969~1, , 1973, and Rohde (1972). Some observations have been made on the sensory receptors of Aspidobothria (Rohde, 1966;Halton & Lyness, 1971), and of Cestoda (Morseth, 1966(Morseth, , 1967Sakamoto & Sugimura, 1969;Featherston, 1972;Blitz & Smyth, 1973).…”

Section: Introductionmentioning

confidence: 96%

Ultrastructure of the Epithelium and the Sensory Receptors in the Body Wall, the Proboscis and the Pharynx of Gyratrix hermaphroditus (Turbellaria, Rhabdocoela)

Reuter

1975

Zoologica Scripta

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The epidermis of Gyratrix hermaphroditus can be described as semi‐syn‐cytial. Its ultrastructure is characterized by microvilli and cilia with two strong rootlets perpendicular to each other. The apical part of the epithelium contains mitochondria and vacuoles. The basal synthesizing layer is provided with cell boundaries, at least between the type II penetrating receptors in the anterior and posterior end of the worm. Four different types of sensory receptors are described. The type I receptor has a protruding cilium‐bearing process and is found all over the body. The type II receptor is found in the anterior and posterior end and has a retracted process with a kinocilium surrounded by eight stereocilia. The type III receptor bears a balloon‐shaped modified cilium and is located at the anterior end. The type IV receptor has a short cilium with an unstable ciliary membrane and occurs in the proboscis epithelium as well as in the pharynx epithelium. Phylogenetical aspects of the semi‐syncytial epithelium and functional aspects of the sensory receptors are discussed.

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Section: Introductionmentioning

confidence: 96%

Ultrastructure of the Epithelium and the Sensory Receptors in the Body Wall, the Proboscis and the Pharynx of Gyratrix hermaphroditus (Turbellaria, Rhabdocoela)

Reuter

1975

Zoologica Scripta

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“…Currently, new microscopy techniques have been providing great advances in studies of the morphology of various species of digenean trematodes (Robson and Erasmus 1970; Mair et al . 1998a, b, 2000; Abdul‐Salam and Sreelatha 2000, 2004; Stewart et al .…”

Section: Introductionmentioning

confidence: 99%

Gross anatomy of the musculature and a new description of the reproductive system of Tanaisia bragai and Tanaisia inopina (Trematoda: Eucotylidae) analysed by confocal laser scanning microscopy

et al. 2010

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D'ávila, S., Manso, P. P. A., Bessa, E. C. A., Rodrigues, M. L. A. and Dias, R. J. P. 2010. Gross anatomy of the musculature and a new description of the reproductive system of Tanaisia bragai and Tanaisia inopina (Trematoda: Eucotylidae) analysed by confocal laser scanning microscopy. -Acta Zoologica (Stockholm) 91: 139-149Confocal scanning laser microscopy has become an important tool to clarify the organization of the musculature and innervation, as well as the morphology of the reproductive and alimentary tract of various helminth species. The goal of this work was to describe the morphology of the reproductive system and the gross anatomy of the musculature of adults of the species Tanaisia bragai and Tanaisia inopina by means of confocal scanning laser microscopy. The helminths were found parasitizing the kidney collection ducts of Columba livia, in the municipality of Juiz de Fora, Brazil. These helminths were stained with Mayer's carmalum, mounted on permanent slides and observed through a confocal scanning laser microscope. The tomographic images showed the morphology of the organs and glands of the reproductive system, along with the general morphology of the musculature of the body wall, oral sucker, acetabulum, pharynx, intestinal caeca, oesophagus and reproductive system ducts. The present work is the first re-characterization of the reproductive tract of T. bragai and T. inopina. We also present the first description of the general morphology of the gametes and cells of the glands associated with the reproductive apparatus of these species.

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“…Even earlier, Wagner (1961) observed raised papillae bearing "setae" on the body surface of the cercaria of S. mansoni Sambon 1907 and "stalked papillae" on the anterior margin of the oral sucker. These findings were later described in greater detail by Robson and Erasmus (1970) using SEM and transmission electron microscopy (TEM). They discovered that the "stalked papillae" consisted of a proud conical bulb that terminated apically in a sheath bearing a cilium.…”

Section: Discussionmentioning

confidence: 89%

Chaetotaxy and armature of Ichthyocotylurus erraticus (Rudolphi, 1809) and I. variegatus (Creplin, 1825) cercariae (Digenea, Strigeidae)

Bell

Gibson

Sommerville

1996

Parasitology Research

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The armature and chaetotaxy of Ichthyocotylurus erraticus (Rudolphi 1809) and I. variegatus (Creplin 1825) cercariae were studied using scanning electron microscopy (SEM) and silver staining of the argentophilic sensilla. This represents the first detailed investigation of the surface structures of cercariae belonging to this genus. Both species exhibited a similar armature, although differences were recorded in the number of spines comprising the pre-oral tuft and the number of rows of spines in the post-oral collar. The number and the distribution of sensilla were found to be identical for both species of cercariae. Four types of sensilla, common to both species, were identified that differed in cilia length and in the structure of the surrounding collar. The distribution of particular sensillary forms was found to be consistent in both species.

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The ultrastructure, based on stereoscan observations, of the oral sucker of the cercaria of Schistosoma mansoni with special reference to penetration

Cited by 33 publications

References 10 publications

Ultrastructure of the Epithelium and the Sensory Receptors in the Body Wall, the Proboscis and the Pharynx of Gyratrix hermaphroditus (Turbellaria, Rhabdocoela)

Ultrastructure of the Epithelium and the Sensory Receptors in the Body Wall, the Proboscis and the Pharynx of Gyratrix hermaphroditus (Turbellaria, Rhabdocoela)

Gross anatomy of the musculature and a new description of the reproductive system of Tanaisia bragai and Tanaisia inopina (Trematoda: Eucotylidae) analysed by confocal laser scanning microscopy

Chaetotaxy and armature of Ichthyocotylurus erraticus (Rudolphi, 1809) and I. variegatus (Creplin, 1825) cercariae (Digenea, Strigeidae)

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