Wyniki wyszukiwania

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On some ultrastructural features of the reproductive system of the monogenean parasite Macrogyrodactylus congolensis from Clarias gariepinus inhabiting the River Nile in Egypt

100%

Arafa S. Z., El-Naggar M. M., Kearn G. C.

Acta Parasitologica

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2014

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tom 59

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nr 2

Some organs of the reproductive system of the protogynous monogenean skin parasite Macrogyrodactylus congolensis (Prudhoe, 1957) Yamaguti, 1963 have been studied using transmission electron microscopy. The vesicula seminalis is enclosed by a prominent layer of circular muscle fibres and has inner syncytial protrusions. The penis bulb is a highly muscular organ with prominent radial and circular muscle fibres, a gutter-shaped large spine and 16 small spines. Two syncytial male accessory glands, and a single reservoir for male accessory secretion were identified. The secretory bodies in the male accessory glands and male accessory reservoir have a unique structure. A large oocyte is situated in a chamber, previously referred to as the “ootype” or “egg-cell-forming region” (ECFR), which also contains one or two small undifferentiated cells and vacuolated tissue. Mature spermatozoa were abundant in the receptaculum seminis and dispersed in the vacuolated tissue in the ECFR and appeared to be attached to the membrane of the large oocyte. Mature spermatozoa were also seen in the parenchymal tissue near the chamber containing embryos and even in the tissues of the embryo.

2

Adrenergic innervation of the epididymis, vas deferens, accesory genital glands and urethra in the boar

100%

Kaleczyc J., Majewski M., Calka J., Lakomy M.

Folia Histochemica et Cytobiologica

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1993

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tom 31

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nr 3

3

Ontogenesis of testicular function in humans

80%

Rouiller-Fabre V., Muczynski V., Lambrot R., Lecureuil C., Coffigny H., Pairault C., Moison D., Angenard G., Bakalska M., Courtot A. M., Frydman R., Habert R.

Folia Histochemica et Cytobiologica

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2009

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tom 47

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nr 5

4

The impact of metalloestrogens on the physiology of male reproductive health as a current problem of the XXI century

80%

Jurkowska K., Kratz E. M., Sawicka E., Piwowar A.

Journal of Physiology and Pharmacology

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2019

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tom 70

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nr 3

5

Lipid peroxidation in fresh and stored semen of Green-legged Partridge

80%

Partyka A., Jerysz A., Pokorny P.

Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine

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2007

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tom 10

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nr 2

6

Paramount levels of ergothioneine transporter SLC22A4 mRNA in boar seminal vesicles and cross-species analysis of ergothioneine and glutathione in seminal plasma

80%

Nikodemus D., Lazic D., Bach M., Bauer T., Pfeiffer C., Wiltzer L., Lain E., Schomig E., Grundemann D.

Journal of Physiology and Pharmacology

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2011

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tom 62

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nr 4

7

Impaired expression of sex hormone receptors in male reproductive organs of diabetic rat in response to oral antidiabetic drugs

71%

Ayuob N. N., Murad H. A. S., Ali S. S.

Folia Histochemica et Cytobiologica

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2015

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tom 53

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nr 1

8

A new genus and new species of microbothriid monogenean [Platyhelminthes] with a functionally enigmatic reproductive system, parasitic on the skin and mouth lining of the largetooth sawfish, Pristis microdon, in Australia

61%

Kearn G. C., Whittington I. D., Evans-Gowing R.

Acta Parasitologica

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2010

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tom 55

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nr 2

115-122

Dermopristis paradoxus gen. et sp. nov., a microbothriid monogenean parasite from the skin and mouth lining of the largetooth sawfish, Pristis microdon (Elasmobranchii, Pristidae) in Australia, is described. The parasite has 2 juxtaposed testes and differs from other microbothriids in possessing a unique and unusual terminal male reproductive tract comprising a proximal and a distal tube, the latter with a conspicuous opening on the ventral surface and lacking a recognisable male copulatory organ. The smalltooth sawfish, P. pectinata, also has a skin-parasitic microbothriid, Dermophthirioides pristidis Cheung et Nigrelli, 1983, but this parasite species has a prominent copulatory papilla. Dermopristis paradoxus also has parallel ridges with broad tops running in a roughly transverse direction across the ventral surface of the body. The ventral ridges are prominent from the level of the pharynx to the posterior region of the body. The function of the ridges is unknown. Reproductive biology, attachment and feeding in D. paradoxus are discussed. In the absence of unmounted parasite specimens for sectioning, a mounted specimen of D. paradoxus was released from the slide and successfully processed to provide serial, stained, resin sections. This useful technique is recommended to provide anatomical information in situations where only specimens on slides are available for study.

Ograniczanie wyników

On some ultrastructural features of the reproductive system of the monogenean parasite Macrogyrodactylus congolensis from Clarias gariepinus inhabiting the River Nile in Egypt

Adrenergic innervation of the epididymis, vas deferens, accesory genital glands and urethra in the boar

Ontogenesis of testicular function in humans

The impact of metalloestrogens on the physiology of male reproductive health as a current problem of the XXI century

Lipid peroxidation in fresh and stored semen of Green-legged Partridge

Paramount levels of ergothioneine transporter SLC22A4 mRNA in boar seminal vesicles and cross-species analysis of ergothioneine and glutathione in seminal plasma

Impaired expression of sex hormone receptors in male reproductive organs of diabetic rat in response to oral antidiabetic drugs

A new genus and new species of microbothriid monogenean [Platyhelminthes] with a functionally enigmatic reproductive system, parasitic on the skin and mouth lining of the largetooth sawfish, Pristis microdon, in Australia