Spermiogenesis and spermatozoon of the liver fluke Mediogonimus jourdanei (Microphalloidea: Prosthogonimidae), a parasite of Myodes glareolus (Rodentia: Cricetidae)

Bakhoum, Abdoulaye J.S.; Feliú, Carlos; Bâ, Cheikh Tidiane; Miquel, Jordi

doi:10.14411/fp.2012.006

Cited by 14 publications

(8 citation statements)

References 40 publications

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“…The spermatozoon of L. retroflexus displays external ornamentation of the plasma membrane localized in the anterior spermatozoon region as many species belonging to the superfamily Microphalloidea, namely Pronoprymna ventricosa, M. primas, P. gymnesicus, M. jourdanei; D. brusinae; B. turgida (Quilichini et al, 2007b;Castilho and Barandela, 1990;Gracenea et al, 1997;Bakhoum et al, 2012;Levron et al, 2004a;Bruňanská et al, 2014). This structure has also been observed in the majority of digenean families (Bakhoum, 2012).…”

Section: External Ornamentationmentioning

confidence: 82%

“…The second morphology species groups belong to the cryptogonimidean type of Quilichini et al (2010) with a posterior spermatozoon tip. The latter is characterized by the absence of cortical microtubules and the sequence posterior extremity of the nucleus, the posterior extremity of the second axoneme as reported in P. ventricosa, G. tigrinum, M. primas, M. linguilla, P. gymnesicus, M. jourdanei (Quilichini et al, 2007b;Sharma and Rai, 1995;Castilho and Barandela, 1990;Hendow and James, 1988;Gracenea et al, 1997;Bakhoum et al, 2012). Thus, the pattern of the posterior spermatozoon extremity appears of great interest for understanding the relationships within the digeneans.…”

Section: Posterior Spermatozoon Extremitymentioning

confidence: 91%

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Spermatological characters of the digenean Lecithostaphylus retroflexus (Molin, 1859) (Microphalloidea: Zoogonidae), a parasite of the teleost fish Belone belone gracilis

Kacem¹,

Ndiaye

Neifar³

et al. 2015

Tissue and Cell

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Section: External Ornamentationmentioning

confidence: 82%

Section: Posterior Spermatozoon Extremitymentioning

confidence: 91%

Spermatological characters of the digenean Lecithostaphylus retroflexus (Molin, 1859) (Microphalloidea: Zoogonidae), a parasite of the teleost fish Belone belone gracilis

Kacem¹,

Ndiaye

Neifar³

et al. 2015

Tissue and Cell

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“…[27] Variability of the number of mitochondria is observed within the digeneans in general and in the studied lepocreadioid species in particular (see Table 1). Although the determination of the number of mitochondria depends on each author's considerations [see 11,17,37] at least one mitochondrion is observed in all digenean species studied until now. This criterion would be of great interest in phylogenetic interpretations within the Platyhelminthes considering that the absence of mitochondrion is a recognized synapomorphy for the Eucestoda [see 10,27].…”

Section: Spermatozoonmentioning

confidence: 99%

Spermiogenesis and the spermatozoon ultrastructure of Robphildollfusium fractum (Digenea: Gyliauchenidae), an intestinal parasite of Sarpa salpa (Pisces: Teleostei)

Bakhoum

Sène

Ndiaye

et al. 2012

Comptes Rendus. Biologies

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Spermiogenesis in Robphildollfusium fractum begins with the formation of a differentiation zone containing: two centrioles, each bearing striated rootlets, nucleus, several mitochondria and an intercentriolar body constituted by seven electron-dense layers. The two centrioles originate two free flagella growing orthogonally to the median cytoplasmic process. Later, the free flagella rotate and undergo proximodistal fusion with the median cytoplasmic process. Nuclear and mitochondrial migrations occur before this proximodistal fusion. Finally, the young spermatozoon detaches from the residual cytoplasm after the constriction of the ring of arched membranes. The spermatozoon of R. fractum exhibits two axonemes of different length of the 9+'1' trepaxonematan pattern, nucleus, two mitochondria, two bundles of parallel cortical microtubules, external ornamentation of the plasma membrane, spine-like bodies and granules of glycogen. Additionally, a shorter axoneme, which does not reach the nuclear region, the presence of an electron-dense material in the anterior spermatozoon extremity and the morphologies of both spermatozoon extremities characterize the mature sperm of R. fractum.

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“…Other types of posterior spermatozoon extremities have been reported in digenean species. This is the case of mature spermatozoa exhibiting one axoneme as described in most microphalloid species (Bakhoum et al, 2012a;Miquel et al, 2013;Bruňanská et al, 2014) and opisthorchioid species (Quilichini et al, 2009;Foata et al, 2012;Zhukova, Mordvinov & Kiseleva, 2014). In PeerJ reviewing PDF | (2016:06:11566:1:0:NEW 24 Aug 2016)…”

Section: (2010)mentioning

confidence: 96%

“…In Digenea the posterior spermatozoon extremity is morphologically variable and is, therefore, valuable in the establishment of spermatozoon models (Quilichini et al, 2010;Ndiaye et al, 2015b;Bakhoum et al, 2012aBakhoum et al, , 2015a. In all monorchiid species described so far the posterior spermatozoon extremity contains a nucleus as in O. dinema and P. selaris (Table 1).…”

Section: -Posterior Spermatozoon Charactersmentioning

confidence: 99%

Peer Review #1 of "Spermatozoon ultrastructure in two monorchiid digeneans (v0.1)"

2016

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Spermatological characteristics of species from two monorchiid genera, Opisthomonorchis and Paramonorcheides, have been investigated, for the first time, by means of transmission electron microscopy. The ultrastructural study reveals that the mature spermatozoon of Opisthomonorchis dinema and Paramonorcheides selaris share several characters such as the presence of two axonemes of different lengths showing the 9+''1'' pattern of the Trepaxonemata, a nucleus, two mitochondria, two bundles of parallel cortical microtubules, external ornamentation of the plasma membrane, spine-like bodies, granules of glycogen and similar morphologies of the anterior and posterior extremities. The slight differences between the male gamete of O. dinema and P. selaris are the length of the first axoneme and the position of the second mitochondrion. This study also elucidates the general morphology of the spermatozoon in all monorchiid species described so far, which corresponds to a unique spermatozoon type. Other interesting finds concern the spermatological similarities between monorchiid spermatozoa and the mature spermatozoon reported in the apocreadiid Neoapocreadium chabaudi. These similarities allow us to suggest a close phylogenetical relationship between the Monorchiidae and the Apocreadiidae, although more studies are needed, especially in the unexplored taxa.

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Spermiogenesis and spermatozoon of the liver fluke Mediogonimus jourdanei (Microphalloidea: Prosthogonimidae), a parasite of Myodes glareolus (Rodentia: Cricetidae)

Cited by 14 publications

References 40 publications

Spermatological characters of the digenean Lecithostaphylus retroflexus (Molin, 1859) (Microphalloidea: Zoogonidae), a parasite of the teleost fish Belone belone gracilis

Spermatological characters of the digenean Lecithostaphylus retroflexus (Molin, 1859) (Microphalloidea: Zoogonidae), a parasite of the teleost fish Belone belone gracilis

Spermiogenesis and the spermatozoon ultrastructure of Robphildollfusium fractum (Digenea: Gyliauchenidae), an intestinal parasite of Sarpa salpa (Pisces: Teleostei)

Peer Review #1 of "Spermatozoon ultrastructure in two monorchiid digeneans (v0.1)"

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