Ultrastructure of spermiogenesis and spermatozoa of Notocotylus neyrai González Castro, 1945 (Digenea, Notocotylidae), intestinal parasite of Microtus agrestis (Rodentia: Arvicolidae) in Spain
نویسندگان
چکیده
PAPA IBNOU NDIAYE, JORDI MIQUEL, CARLOS FELIU and BERNARD MARCHAND Laboratori de Parasitologia, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, E-08028 Barcelona, Spain Tel. +34 (93) 402-4500; Fax: +34 (93) 402-4504; email: [email protected] Laboratoire Parasites et Écosystèmes Méditerranéens, Faculté des Sciences et Techniques, Université de Corse, F-20250 Corte, France
منابع مشابه
Notocotylus loeiensis n. sp. (Trematoda: Notocotylidae) from Rattus losea (Rodentia: Muridae) in Thailand
Notocotylus loeiensis n. sp. (Trematoda: Notocotylidae) is described from the cecum of the lesser rice field rat (Rattus losea), from Loei Province in Thailand with a prevalence of 9.1% (eight of 88 rats infected). The new species differs from previously described Notocotylus species mainly by the extreme prebifurcal position of the genital pore and the number of ventral papillae. This is the f...
متن کاملUltrastructure of spermatogenesis and sperm development in Saccocoelioides godoyi Kohn & Froes, 1986 (Digenea, Haploporidae).
Ultrastructural observations of spermatogenesis and sperm development of Saccocoelioides godoyi, an intestinal parasite of Leporinus friderici (Bloch, 1794) are described. The irregular-shaped spermatogonia form a peripheral layer, and show a prominent nucleus. Spermatocytes are larger than spermatogonia, and in the early stage present synaptonemal complex. Spermatids show nuclei smaller than t...
متن کاملSpermatogenesis and spermiogenesis in Didymocystis wedli Ariola, 1902 (Didymozoidae, Digenea).
The ultrastructure of the male reproductive system of Didymocystis wedli was studied for the first time, demonstrating spermiogenesis and spermatogenesis at different cell stages. The spermatozoa morphology was compared with that of other Digenea species. It was observed that the different cells of the spermatogenesis process follow the classic pattern reported for the majority of the parasitic...
متن کاملUltrastructural characters of the spermatozoa in Digeneans of the genus Lecithochirium Lühe, 1901 (Digenea, Hemiuridae), parasites of fishes: comparative study of L. microstomum and L. musculus
This study provides the first ultrastructural data of spermatozoa in the genus Lecithochirium. The spermatozoa of L. microstomum (from Trichiurus lepturus in Senegal) and L. musculus (from Anguilla anguilla in Corsica) exhibit the general pattern described in the great majority of the Digenea, namely two axonemes with the 9 + "1" pattern typical of the Trepaxonemata, one mitochondrion, a nucleu...
متن کاملSex chromosomes pairing in two Arvicolidae species: Microtus nivalis and Arvicola sapidus.
Arvicolid rodents present both synaptic and asynaptic sex chromosomes. We analyzed the pairing behaviour of sex chromosomes in two species belonging to this rodent group (Microtus nivalis and Arvicola sapidus). At pachynema, the sex chromosomes of both species paired in a small region while the rest remain unsynapsed. Consequently at metaphase I, sex chromosomes present end-to-end association. ...
متن کامل