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Title: | Ultrastructural organisation of the spermatozoon of Allopodocotyle tunisiensis Derbel and Neifar, 2009 (Digenea, Opecoelidae), an intestinal parasite of Solea aegyptiaca Chabanaud, 1927 (Teleostei, Soleidae) |
Author: | Kacem, Hichem Diagne, Papa Mbagnick Miquel Colomé, Jordi |
Keywords: | Espermatozoides Parasitologia Ultraestructura (Biologia) Trematodes Microscòpia electrònica de transmissió Peixos plans Spermatozoa Parasitology Ultrastructure (Biology) Trematoda Transmission electron microscopy Flatfishes |
Issue Date: | 31-Jan-2019 |
Publisher: | Elsevier |
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. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.tice.2019.01.008 |
It is part of: | Tissue & Cell, 2019, vol. 57, p. 1-7 |
URI: | http://hdl.handle.net/2445/161980 |
Related resource: | https://doi.org/10.1016/j.tice.2019.01.008 |
ISSN: | 0040-8166 |
Appears in Collections: | Articles publicats en revistes (Biologia, Sanitat i Medi Ambient) Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio)) |
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