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Spermiogenesis and spermatozoon of the tapeworm Parabothriocephalus gracilis (Bothriocephalidea): Ultrastructural and cytochemical studies

SYSNO ASEP	0342872
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Spermiogenesis and spermatozoon of the tapeworm Parabothriocephalus gracilis (Bothriocephalidea): Ultrastructural and cytochemical studies
Author(s)	Šípková, Lenka (BC-A) Levron, Céline (BC-A) Freeman, M. (MY) Scholz, Tomáš (BC-A)_{RID, ORCID}
Source Title	Acta Parasitologica. - : Springer - ISSN 1230-2821 Roč. 55, č. 1 (2010), s. 58-65
Number of pages	8 s.
Language	eng - English
Country	PL - Poland
Keywords	Eucestoda ; Bothriocephalidea ; Parabothriocephalus gracilis ; spermiogenesis ; spermatozoon ; ultrastructure
Subject RIV	GJ - Animal Vermins ; Diseases, Veterinary Medicine
R&D Projects	GP524/07/P039 GA ČR - Czech Science Foundation (CSF)
	GA524/08/0885 GA ČR - Czech Science Foundation (CSF)
	LC522 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z60220518 - PAU-O, BC-A (2005-2011)
UT WOS	000274236600009
DOI	10.2478/s11686-010-0003-9
Annotation	Spermiogenesis of the tapeworm Parabothriocephalus gracilis is characterized by the formation of a zone of differentiation with two centrioles associated with striated rootlets, and an intercentriolar body between them. The two flagella undergo a rotation of 90 until they become parallel to the median cytoplasmic extension with which they fuse. Electron-dense material is present in the apical region of the zone of differentiation in the early stages of spermiogenesis. The mature spermatozoon contains two axonemes of the 9 + '1' trepaxonematan pattern, nucleus, parallel cortical microtubules and electron-dense granules of glycogen. The anterior extremity of the spermatozoon exhibits a single helical electron-dense crested body 130 nm thick. One of the most interesting features is the presence of a ring of cortical microtubules surrounding the axoneme. This character has been reported only for species of the order Bothriocephalidea and may be unique in this cestode group.
Workplace	Biology Centre (since 2006)
Contact	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Year of Publishing	2011

Number of the records: 1