Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/43489
Title: Ultrastructural characters of the spermatozoon of the digenean Hypocreadium caputvadum Kacem et al., 2011 (Lepocreadioidea: Lepocreadiidae), an intestinal parasite of Balistes capriscus in Tunisia
Author: Kacem, Hichem
Bakhoum, Abdoulaye Jacque Sacodou
Eira, Catarina
Neifar, Lassad
Miquel Colomé, Jordi
Keywords: Espermatozoides
Ultraestructura (Biologia)
Trematodes
Parasitologia
Spermatozoa
Ultrastructure (Biology)
Trematoda
Parasitology
Issue Date: Oct-2012
Publisher: Elsevier Masson SAS
Abstract: The ultrastructural organization of the spermatozoon of the digenean Hypocreadium caputvadum (Lepocreadioidea: Lepocreadiidae) is described. Live digeneans were collected from Balistes capriscus (Teleostei: Balistidae) from the Gulf of Gabès, Tunisia (Eastern Mediterranean Sea). The mature spermatozoon of H. caputvadum shows several ultrastructural characters such as two axonemes of different lengths exhibiting the classical 9 +"1" trepaxonematan pattern, a nucleus, two mitochondria, granules of glycogen, external ornamentation of the plasma membrane and two bundles of parallel cortical microtubules. Moreover, in the anterior extremity, the second axoneme is partly surrounded by a discontinuous and submembranous layer of electron-dense material. Our study provides new data on the spermatozoon of H. caputvadum in order to improve the understanding of phylogenetic relationships in the Digenea, particularly in the superfamily Lepocreadioidea. In this context, the electron-dense material surrounding one of the axonemes in the anterior spermatozoon extremity constitutes the unique distinguishing ultrastructural character of lepocreadioideans, and it is present in spermatozoa of lepocreadiids, aephnidiogenids and gyliauchenids.
Note: Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.crvi.2012.10.002
It is part of: Comptes Rendus Biologies, 2012, vol. 335, num. 10-11, p. 637-644
Related resource: http://dx.doi.org/10.1016/j.crvi.2012.10.002
URI: http://hdl.handle.net/2445/43489
ISSN: 1631-0691
Appears in Collections:Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))
Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)

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