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| rdf:type
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| Description
| - Ultrastructural characters of the spermiogenesis and mature spermatozoon of Notopentorchis sp. (Cestoda, Cyclophyllidea, Paruterinidae), a parasite from Apus affinis (Aves, Apodiformes, Apodidae) from Gabon, are described by means of transmission electron microscopy. Cytochemical analysis for detection of glycogen was applied. Vestigial striated roots associated with the two centrioles are present in the zone of differentiation. The spermiogenesis is characterized by an external growth of free flagellum followed by a proximodistal fusion of the latter with cytoplasmic protrusion, thus, corresponding to the cestode spermiogenesis of the type III pattern. In the final stage of spermiogenesis, a single crested body appears at the base of the forming spermatozoon. The mature spermatozoon is filiform and tapering at both extremities. It consists of 5 regions differing in their ultrastructural characteristics. The anterior extremity of the mature spermatozoon is characterized by the presence of an apical cone and a single crested body. The cytoplasm contains one axoneme of 9 + %221%22 type of the trepaxonematan Platyhelminthes, a periaxonemal sheath, a layer of twisted cortical microtubules, transverse intracytoplasmic walls, and granules of glycogen. The nucleus is coiled in spiral around the axoneme. The posterior extremity of the spermatozoon is characterized by the presence of electron-dense material. The comparison of the results with previous studies on paruterinids suggests that several characters of the spermiogenesis and the mature spermatozoon are invariable, i.e. the type III spermiogenesis and the presence of vestigial striated roots, a single crested body, a periaxonemal sheath, and intracytoplasmic walls. The main differences of the sperm cells among members of this family are the lack of dense granules (as in Triaenorhina rectangula) and the presence of electron-dense material in the posterior extremity of the spermatozoon (as in Notopentorchis sp.).
- Ultrastructural characters of the spermiogenesis and mature spermatozoon of Notopentorchis sp. (Cestoda, Cyclophyllidea, Paruterinidae), a parasite from Apus affinis (Aves, Apodiformes, Apodidae) from Gabon, are described by means of transmission electron microscopy. Cytochemical analysis for detection of glycogen was applied. Vestigial striated roots associated with the two centrioles are present in the zone of differentiation. The spermiogenesis is characterized by an external growth of free flagellum followed by a proximodistal fusion of the latter with cytoplasmic protrusion, thus, corresponding to the cestode spermiogenesis of the type III pattern. In the final stage of spermiogenesis, a single crested body appears at the base of the forming spermatozoon. The mature spermatozoon is filiform and tapering at both extremities. It consists of 5 regions differing in their ultrastructural characteristics. The anterior extremity of the mature spermatozoon is characterized by the presence of an apical cone and a single crested body. The cytoplasm contains one axoneme of 9 + %221%22 type of the trepaxonematan Platyhelminthes, a periaxonemal sheath, a layer of twisted cortical microtubules, transverse intracytoplasmic walls, and granules of glycogen. The nucleus is coiled in spiral around the axoneme. The posterior extremity of the spermatozoon is characterized by the presence of electron-dense material. The comparison of the results with previous studies on paruterinids suggests that several characters of the spermiogenesis and the mature spermatozoon are invariable, i.e. the type III spermiogenesis and the presence of vestigial striated roots, a single crested body, a periaxonemal sheath, and intracytoplasmic walls. The main differences of the sperm cells among members of this family are the lack of dense granules (as in Triaenorhina rectangula) and the presence of electron-dense material in the posterior extremity of the spermatozoon (as in Notopentorchis sp.). (en)
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| Title
| - Spermiogenesis and spermatozoon ultrastructure of the paruterinid cestode Notopentorchis sp. (Cyclophyllidea)
- Spermiogenesis and spermatozoon ultrastructure of the paruterinid cestode Notopentorchis sp. (Cyclophyllidea) (en)
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| skos:prefLabel
| - Spermiogenesis and spermatozoon ultrastructure of the paruterinid cestode Notopentorchis sp. (Cyclophyllidea)
- Spermiogenesis and spermatozoon ultrastructure of the paruterinid cestode Notopentorchis sp. (Cyclophyllidea) (en)
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| skos:notation
| - RIV/60077344:_____/12:00377771!RIV13-GA0-60077344
|
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(GBP505/12/G112), Z(AV0Z60220518)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/60077344:_____/12:00377771
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - INTESTINAL PARASITE; MATURE SPERMATOZOON; SPERMATOLOGICAL CHARACTERS; TAPEWORMS PLATYHELMINTHES; COMPARATIVE MORPHOLOGY; SPERM ULTRASTRUCTURE; ELECTRON MICROSCOPY; GOLDEN-HAMSTERS; FINE-STRUCTURE; VON LINSTOW (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
|
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Levron, Céline
- Mariaux, J.
- Georgiev, B. B.
- Mizinska, Y.
- NIkolov, P. N.
- Yoneva, A.
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| http://linked.open...ain/vavai/riv/wos
| |
| http://linked.open...n/vavai/riv/zamer
| |
| issn
| |
| number of pages
| |
| http://bibframe.org/vocab/doi
| - 10.1007/s00436-011-2809-2
|
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