{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T05:01:52Z","timestamp":1790744512882,"version":"4.1.0"},"reference-count":21,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2005,2,4]],"date-time":"2005-02-04T00:00:00Z","timestamp":1107475200000},"content-version":"vor","delay-in-days":4539,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecular Reproduction Devel"],"published-print":{"date-parts":[[1992,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Spermiogenesis in <jats:italic>Hymenolepsis nana<\/jats:italic> begins with the formation of a differentiation zone. This is limited at the front by arched membranes, is surrounded by cortical microtubules assoicated with 12 crested\u2010like bodies, and contains a single centriole made up of doublets. The distal centriole gives rise to a flagellum that grows at the same pace as the cortical microtubules. Migration of the nucleus takes place after the formation of the flagellum. It is followed by the separation of the old spermatid from the residual cytoplasm. The mature <jats:italic>H. nana<\/jats:italic> spermatozoon is filiform and lacks mitochondria. The axoneme, of the 9 + \u201c1\u201d pattern of the Platyhelminthes, does not reach the extremities of the spermatozoon. The nucleus is electron dense and is in close contact with the axoneme around which it coils in a spiral making an angle of 10\u00b0 to 15\u00b0 with the spermatozoon axis. The cortical microtubules follow a 10\u00b0 to 15\u00b0 helicoidal path along almost their whole length, except at their posterior extremity, where they are parallel to the spermatozoon axis. <jats:italic>H. nana<\/jats:italic> is distinguished by the early development of 12 crested\u2010like bodies of different lengths and by the existence of a single centriole in the differentiation zone. Such a high number of crested\u2010like bodies had never previously been reported in a cestode. \u00a9 1992 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/mrd.1080330106","type":"journal-article","created":{"date-parts":[[2005,2,24]],"date-time":"2005-02-24T00:07:13Z","timestamp":1109203633000},"page":"39-45","source":"Crossref","is-referenced-by-count":20,"title":["Reinvestigation of the ultrastructure of spermiogenesis and the spermatozoon of <i>Hymenolepis nana<\/i> (Cestoda, Cyclophyllidea), parasite of the small intestine of <i>Rattus rattus<\/i>"],"prefix":"10.1002","volume":"33","author":[{"given":"Cheikh Tidiane","family":"B\u00e2","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bernard","family":"Marchand","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,2,4]]},"reference":[{"key":"e_1_2_1_2_1","unstructured":"Azzouz\u2010DraouiN(1985):Etude ultrastructurale compar\u00e9e de la spermiogen\u00e8se et du spermatozo\u00efde de quatre cestodes Diphyllidea. Th\u00e8se de 3\u00b0 cycle Tunis 120p."},{"key":"e_1_2_1_3_1","unstructured":"Azzouz\u2010DraouiN Mokhtar\u2010MaamouriF(1986):Ultrastructure compar\u00e9e de la spermiogen\u00e8se et du spermatozo\u00efde de Echinbothrium affine Diesing 1863 et E. harfordi"},{"key":"e_1_2_1_3_2","first-page":"9","article-title":"Cestoda, Diphyllidea","volume":"18","author":"Mac Vicar","year":"1976","journal-title":"Bull Soc Sci Nat Tunisie"},{"key":"e_1_2_1_4_1","first-page":"29","article-title":"Ultrastructural particularities of the spermatozoon of Stilesia globipunctata (Cestoda) parasite of the small intestine of sheep and goats in Senegal","volume":"24","author":"B\u00e2 CT","year":"1992","journal-title":"J Submicrosc Cytol Pathol"},{"key":"e_1_2_1_5_1","unstructured":"B\u00e2CT MarchandB(1992b):Ultrastructure of the Retinometra serrata spermatozoon (Furhmann 1906) Spasskii 1963 (Cestoda) intestinal parasite of two turtle\u2010doves in Senegal. J Submicrosc Cytol Pathol (in press)."},{"key":"e_1_2_1_6_1","unstructured":"B\u00e2CT MarchandB(1992c):Ultrastructural study of the spermatozoa of Moniezia expansa Rudolphi 1810 and M. benedeni Moniez 1879 (Cestoda Cyclophyllidea Anoplocephalidae). Ann Parasitol (in press)."},{"key":"e_1_2_1_7_1","first-page":"605","article-title":"Demonstration of the orientation of the Cestodes spermatozoon illustrated by the ultrastructural study of spermiogenesis and the spermatozoon of a Cyclophyllidea: Thysaniezia ovilla, Rivolta, 1874","volume":"23","author":"B\u00e2 CT","year":"1991","journal-title":"J Submicrosc Cytol Pathol"},{"key":"e_1_2_1_8_1","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1051\/parasite\/1981563247","article-title":"Ultrastructure compar\u00e9e du spermatozo\u00efde des Cestodes. 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Th\u00e8se d'Etat Montpellier 224p."},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00927519"},{"key":"e_1_2_1_14_1","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1051\/parasite\/1982575429","article-title":"Etude ultrastructurale de la spermiogen\u00e8se de Acanthobothrium filicolle var. fillicole Zschokke, 1888 (Cestoda, Tetraphyllidea, Onchobothriidae)","volume":"5","author":"Mokhtar\u2010Maamouri F","year":"1982","journal-title":"Ann Parasitol"},{"key":"e_1_2_1_15_1","doi-asserted-by":"publisher","DOI":"10.1051\/parasite\/1990655221"},{"key":"e_1_2_1_16_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00389886"},{"key":"e_1_2_1_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5320(64)80073-3"},{"key":"e_1_2_1_18_1","first-page":"475","article-title":"The fine structure of the spermatozoon of sheep tapeworm, Moniezia expansa (Rud., 1810) Cyclophyllidea, Anoplocephalidae","volume":"18","author":"Swiderski Z","year":"1968","journal-title":"Zool Pol"},{"key":"e_1_2_1_19_1","first-page":"181","article-title":"Spermiogenesis in the Proteocephalid Cestode Proteocephalus longicollis","volume":"15","author":"Swiderski Z","year":"1985","journal-title":"Proc Electron Microsc Soc South Afr"},{"key":"e_1_2_1_20_1","unstructured":"SwiderskiZ(1986):Three types of spermiogenesis in Cestodes. 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