Spermatozoon ultrastructure in two monorchiid digeneans.
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.
GEM - Service d'Etude et de Recherche en Microscopie Electronique (SERME), UMR 6134 -SPE, CNRS -University of Corsica , Corte , Corsica , France.
Yann
Y
Quilichini
GEM - Service d'Etude et de Recherche en Microscopie Electronique (SERME), UMR 6134 -SPE, CNRS -University of Corsica, Corte, Corsica, France; Laboratory of Evolutionary Biology, Ecology and Management of Ecosystems, University Cheikh Anta Diop of Dakar, Dakar, Senegal.
Abdoulaye J S
AJ
Bakhoum
ISYEB, Institut de Systématique, Évolution, Biodiversité (UMR7205 CNRS, EPHE, MNHN, UPMC), Muséum National d'Histoire Naturelle de Paris, Sorbonne Universités , Paris , France.
Jean-Lou
JL
Justine
Department of Life Sciences, National History Museum of London , London , United Kingdom.
Rodney A
RA
Bray
Laboratory of Evolutionary Biology, Ecology and Management of Ecosystems, University Cheikh Anta Diop of Dakar , Dakar , Senegal.
Cheikh T
CT
Bâ
GEM - Service d'Etude et de Recherche en Microscopie Electronique (SERME), UMR 6134 -SPE, CNRS -University of Corsica , Corte , Corsica , France.
Bernard
B
Marchand
Digenea; Monorchiidae; Opisthomonorchis; Paramonorcheides; Sperm; TEM; Ultrastructure
Histol Histopathol. 2011 Aug;26(8):1019-28
21692034
J Parasitol. 1998 Apr;84(2):385-408
9576517
Parasitol Res. 2011 Oct;109(4):1099-106
21445614
Parasite. 2014;21:59
25394323
Syst Parasitol. 2012 Nov;83(3):169-77
23065301
Biol Rev Camb Philos Soc. 2010 Aug;85(3):523-43
20015312
Syst Parasitol. 2013 Jun;85(2):147-56
23673693
C R Biol. 2012 Apr;335(4):239-46
22578569
PeerJ. 2015 Feb 12;3:e744
25699200
Parasitol Res. 2009 Mar;104(4):801-7
19023596
Parasitol Res. 2007 Sep;101(4):843-52
17484073
Tissue Cell. 2015 Apr;47(2):198-204
25660562
Tissue Cell. 2015 Aug;47(4):431-7
26025421
J Parasitol. 2006 Jun;92(3):441-53
16883984
J Parasitol. 2007 Jun;93(3):469-78
17626336
Acta Trop. 2003 Jan;85(1):63-70
12505184
Acta Parasitol. 2012 Mar;57(1):34-45
22807012
Parasitol Res. 2009 Jul;105(1):87-95
19221793
Parasite. 2013;20:28
23985167
Parasitol Res. 2015 Oct;114(10):3747-57
26220557
Parasitol Res. 2004 Jun;93(2):102-10
15118909
Parasitol Res. 2014 Jul;113(7):2483-91
24770672
J Cell Biol. 1963 Apr;17:208-12
13986422
Cell Biol Int. 2015 Jul;39(7):799-807
25644308
Int J Parasitol. 2003 Jul;33(7):733-55
12814653
Tissue Cell. 2013 Dec;45(6):428-33
23993419
Tissue Cell. 2015 Jun;47(3):235-41
25796547
Parasitol Res. 2014 Mar;113(3):1093-101
24452915
Parasitol Res. 2007 Oct;101(5):1295-301
17628831
Parasitol Int. 2010 Sep;59(3):358-66
20460171
Folia Parasitol (Praha). 2015 Jan 01;62:
25960545
Tissue Cell. 2012 Feb;44(1):15-21
22088868
J Ultrastruct Res. 1982 Dec;81(3):322-32
7176013
Biol Bull. 2011 Oct;221(2):197-205
22042438
Parasitol Res. 2000 Apr;86(4):301-10
10780739
Folia Parasitol (Praha). 2012 Feb;59(1):32-42
22439426
Parasitol Int. 2010 Sep;59(3):427-34
20538071
Parasitol Res. 2011 May;108(5):1283-93
21127907