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2019-01-31

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cc-by-nc-nd (c) Elsevier, 2019
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/161980

Ultrastructural organisation of the spermatozoon of Allopodocotyle tunisiensis Derbel and Neifar, 2009 (Digenea, Opecoelidae), an intestinal parasite of Solea aegyptiaca Chabanaud, 1927 (Teleostei, Soleidae)

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https://doi.org/10.1016/j.tice.2019.01.008

Abstract

The ultrastructure of the spermatozoon of Allopodocotyle tunisiensis (Digenea, Opecoelidae), an intestinal parasite of Solea aegyptiaca (Teleostei, Soleidae), is described by transmission electron microscopy (TEM). The mature spermatozoon is a filiform cell that exhibits two axonemes of different length with the 9+'1' pattern of trepaxonematan Platyhelminthes. In the anterior spermatozoon extremity, cortical microtubules are absent. They appear after the disappearance of an anterior electron-dense material, being initially in a continuous and submembranous layer. They surround only partially the sperm cell. Later, these cortical microtubules are distributed into two bundles. Additionally, the spermatozoon of A. tunisiensis shows two mitochondria, a nucleus, an external ornamentation of the plasma membrane, spine-like bodies, and a large amount of glycogen granules. According to the location of the external ornamentation, A. tunisiensis presents a Quilichini et al.'s type 2 spermatozoon. With respect to the posterior extremity, the sperm cell of A. tunisiensis corresponds to the Quilichini et al.'s opecoelid type. The morphology of the first mitochondrion with a U-shaped posterior extremity is described for the first time in a digenean spermatozoon.

Subject

Espermatozoides, Parasitologia, Ultraestructura (Biologia), Trematodes, Microscòpia electrònica de transmissió, Peixos plans

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Spermatozoa, Parasitology, Ultrastructure (Biology), Trematoda, Transmission electron microscopy, Flatfishes

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Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)
Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))

Citation

KACEM, Hichem, DIAGNE, Papa Mbagnick and MIQUEL COLOMÉ, Jordi. Ultrastructural organisation of the spermatozoon of Allopodocotyle tunisiensis Derbel and Neifar, 2009 (Digenea, Opecoelidae), an intestinal parasite of Solea aegyptiaca Chabanaud, 1927 (Teleostei, Soleidae). Tissue & Cell. 2019. Vol. 57, num. 1-7. ISSN 0040-8166. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/161980

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