Sperm ultrastructure of the digenean Aphallus tubarium (Rudolphi, 1819) Poche, 1926 (Platyhelminthes, Cryptogonimidae) intestinal parasite of Dentex dentex (Pisces, Teleostei)

Ultrastructural study of the spermatozoon of the digenean Enodiotrema reductum Looss, 1901 (Platyhelminthes, Plagiorchioidea, Plagiorchiidae), parasite of the green turtle Chelonia mydas (Linnaeus, 1758) in Senegal

“…In our opinion, however, this conclusion is incorrect because the anterior extremity of spermatozoon with one axoneme is well described in a number of digenean species, e.g. Scaphiostomum palaearcticum (Ndiaye et al 2002), Notocotylus neyrai (Ndiaye et al 2003a), Fasciola gigantica (Ndiaye et al 2004), Nicolla wisniewskii (Quilichini et al 2007c), Siphoderina elongata (Quilichini et al 2009), Diplodiscus subclavatus (Bakhoum et al 2011b) and A. tubarium (Foata et al 2012), among others.…”

“…However, most of the spermatozoa studied up to now have a single medium-sized mitochondrion (Iomini and Justine 1997;Miquel et al 2000;Ndiaye et al 2002Ndiaye et al , 2004Quilichini et al 2007a;Seck et al 2008a, b;Bakhoum et al 2011b). Most recently, a new type of mitochondrion with a cord and bulges was described in Holorchis micracanthum and Aphallus tubarium (Foata et al 2012). Our study of E. reductum is the first report of this new type of mitochondrion among the Plagiorchioidea, one of the most phylogenetically derived digenean superfamilies (Olson et al 2003).…”

Ultrastructure of the spermatozoon of Helicometroides atlanticus (Digenea, Monorchiidae), an intestinal parasite of Parapristipoma octolineatum (Pisces, Teleostei) in Senegal

“…Spine-like bodies associated with extramembranous ornamentations have been described in the spermatozoon of the Digenea (Agostini et al, 2005;Quilichini et al, 2007aQuilichini et al, , 2010aBakhoum et al, 2012a;Foata et al, 2012;Ndiaye et al, 2012b). Likewise a cytoplasmic expansion has been reported in many species of Digenea (2004;Agostini et al, 2005;Miquel et al, 2006;Seck et al, 2007).…”

“…As the anterior extremity of the spermatozoon, the posterior one shows variable characters depending to the species (Levron et al, 2003;Agostini et al, 2005;Miquel et al, 2006;Quilichini et al, 2010a;Foata et al, 2012). Quilichini et al (2010a), in particular, has compared the major models of the posterior extremity of the spermatozoon of 19 species of Digenea belonging to 12 families.…”

Topography and ultrastructure of the tegument of Aphallus tubarium (Rodolphi, 1819) Poche, 1926 (Digenea: Cryptogonimidae), intestinal parasite of the common Dentex dentex (Linnaeus 1758) from Valinco Gulf

“…It is a large family of trematode having a worldwide distribution, and comprising 66 genera with more than 200 species (Tkach and Bush, 2010). These parasites are mainly found in the digestive tract (stomach, pyloric caeca or intestine) of marine, brackish water, and freshwater fish (Miller and Cribb 2008;Foata et al, 2011). In the Mediterranean, only seven species have been reported.…”