Ultrastructure of the tegument of Prosorhynchoides arcuatus (Linton, 1900) Bray, 1984 (Trematoda, Bucephalidae)

Cohen, Simone Chinicz; Kohn, Anna; Barth, Ortrud Monika

doi:10.1590/s0074-02761996000400013

Cited by 8 publications

(8 citation statements)

References 16 publications

(19 reference statements)

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“…The general topography and ultrastructural organisation of the tegument in Maritrema feliui is essentially similar to that previously described for other digeneans by, inter alia, Threadgold (1963Threadgold ( , 1968Threadgold ( , 1984, Lee (1966), Burton (1966), Świderski (1966), Bogitsh (1968), Hockley (1973), Lumsden (1975), McLaren (1980), Choi and Yoo (1985), Brennan et al (1991), Cohen et al (1996), Ferrer et al (1996) and, more recently, by Filippi et al (2010Filippi et al ( , 2012Filippi et al ( , 2013. The nature of the tegumental surface of M. feliui, with infolding, pits and spines, inevitably increases the total surface area, which is probably important for the inward and outward transmission of nutrients and waste products, respectively.…”

Section: Discussionsupporting

confidence: 81%

A transmission electron microscopical study of the tegument of Maritrema feliui (Digenea: Microphallidae)

Świderski

Montoliu

Feliú

et al. 2013

Acta Parasitologica

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The tegument of the microphallid digenean Maritrema feliui, examined by means of TEM, is described as a syncytial epithelium organised into two layers. The outer layer is an external anucleate, cytoplasmic region connected to a second region composed of nucleate perikarya (cytons) deeply embedded in the surrounding cortical parenchyma. The surface layer of the tegument is covered by a plasma membrane with many deep invaginations, which are apparently pinocytotic. This layer also bears numerous large, electron-dense spines of two types, which are intracellular and attached to the basal plasma membrane. Its cytoplasm is rich in free ribosomes, contains numerous mitochondria, disc-shaped granules frequently arranged in a rouleau, and several large, moderately electron-dense, membranous bodies. The subtegumentary perikarya and their nuclei, which are both flattened, are described in detail, as are their connections with the surface tegument. These perikarya appear to be the source of the disc-shaped granules and some of the other inclusions present in the surface layer. The main characteristics of the tegumental structure of M. feliui are commented upon in relation to the findings of previous publications and their suggested functions.

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Section: Discussionsupporting

confidence: 81%

A transmission electron microscopical study of the tegument of Maritrema feliui (Digenea: Microphallidae)

Świderski

Montoliu

Feliú

et al. 2013

Acta Parasitologica

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“…Ultrastructural observations on digenean tegumental spines are numerous (e.g. Erasmus 1967;Fukuda et al 1987;Cohen et al 1996Cohen et al , 2001Jamjoom and Shalaby 2006;Poddubnaya et al 2010) and show that their shape, size and distribution vary considerably. Our SEM observations show that the spines within the suckers of C. callorhynchi are simple, short, straight and single-pointed.…”

Section: Discussionmentioning

confidence: 99%

The surface topography of Callorhynchocotyle callorhynchi (Manter, 1955) (Monogenea: Hexabothriidae), a parasite of the holocephalan fish Callorhinchus capensis

2015

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A scanning electron microscopical study, incorporating some transmission electron microscopical observations, was undertaken on the surface topography of the gill parasite Callorhynchocotyle callorhynchi (Manter, 1955) (Monogenea: Hexabothriidae) from the Cape elephant fish Callorhinchus capensis (Holocephali) off the western coast of South Africa. The study revealed the presence of several new characteristics for this species. These include the presence of regularly distributed, knob-shaped projections on the surface of the haptor, haptoral appendix and sucker peduncles measuring 0.2 μm and in concentrations of approximately 100 per 10 μm(2) and the existence of a ridge which bisects each sucker lumen, forming two different loculi. We also report, for the first time for any monogenean, the presence of 'true spines'; these occur on the luminal surface of the haptoral suckers and have all of the characteristics of the tegumental spines of digeneans, i.e. they are situated within the distal syncytial tegumental cytoplasm, rest on the basal plasma membrane, have a uniform structure and are covered apically by the tegumental surface plasma membrane. These spines are simple, straight and single-pointed. Under the scanning electron microscopy (SEM), within an area of 20 μm in diameter, 23 such spines were counted, but their concentration and arrangement varies in different regions of the sucker. At their base, they measure about 1.5 μm in width and reach approximately 2 μm in height above the general level of the tegument, but transmission electron microscopy (TEM) measurements of an entire spine indicate that they may reach 3 μm in total length. The presence of spines, possessing similar morphological characteristics in both basal polyopisthocotylean monogeneans and digeneans, represents another characteristic which may prove useful in understanding the evolutionary relationships within the Neodermata.

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“…Also, Bray (1984) concurred with Srivastava and Chauhan's (1973) arguments, and transferred Bucephalopsis arcuatus (Linton, 1900) Eckmann, 1932 to the genus Prosorhynchoides Doilfus, 1929 to become P. arcuatus (Linton, 1900) Bray, 1984 as a new combination. This species was recorded in different localities; in the Gulf of Mixco by Nahhas and Short (1965), in Florida by Anderson (1970), in South Africa by Bray (1984), and in Rio de Janeiro, Brazil by Cohen et al (1996). Ill the present study, P. arcuatus (Linton, 1900) Bray, 1984 was recorded and redescribed for the first time from the Red Sea.…”

Section: Retia ML E!-said Hassaninementioning

confidence: 60%

On Three Digenean Trematodes (Family Bucephalidae) From Marine Teleost Fishes With New Record From the Red Sea

Hassanine

2002

Egypt. J. of Aquatic Biolo. and Fish.

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Ultrastructure of the tegument of Prosorhynchoides arcuatus (Linton, 1900) Bray, 1984 (Trematoda, Bucephalidae)

Abstract: The tegument of the adult form of Prosorhynchoides arcuatus (Linton, 1900) (Trematoda, Bucephalidae)

Cited by 8 publications

References 16 publications

A transmission electron microscopical study of the tegument of Maritrema feliui (Digenea: Microphallidae)

A transmission electron microscopical study of the tegument of Maritrema feliui (Digenea: Microphallidae)

The surface topography of Callorhynchocotyle callorhynchi (Manter, 1955) (Monogenea: Hexabothriidae), a parasite of the holocephalan fish Callorhinchus capensis

On Three Digenean Trematodes (Family Bucephalidae) From Marine Teleost Fishes With New Record From the Red Sea

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