Ultrastructure and cytochemistry of the mature spermatozoon of Khawia armeniaca (Cholodkovsky, 1915) (Caryophyllidea: Lytocestidae), a parasite of Capoeta capoeta sevangi (De Filippi, 1865) (Teleostei, Cyprinidae)

0538701 - BC 2021 RIV SK eng J - Journal Article
Matoušková, M. - Bruňanská, M. - Nebesářová, Jana - Poddubnaya, L. G.
Ultrastructure and cytochemistry of the mature spermatozoon of Khawia armeniaca (Cholodkovsky, 1915) (Caryophyllidea: Lytocestidae), a parasite of Capoeta capoeta sevangi (De Filippi, 1865) (Teleostei, Cyprinidae).
Helminthologia. Roč. 57, č. 4 (2020), s. 353-360. ISSN 0440-6605. E-ISSN 1336-9083
R&D Projects: GA MŠMT(CZ) LM2015062
Institutional support: RVO:60077344
Keywords : diphyllobothrium-latum cestoda * spermatological characters * reproductive ducts * fine-structure * spermiogenesis * spermatogenesis * platyhelminthes * trypanorhyncha * sperm * fish * Cestoda * Caryophyllidea * Khawia armeniaca * spermatozoon * ultrastructure
OECD category: Genetics and heredity (medical genetics to be 3)
Impact factor: 1.184, year: 2020
Method of publishing: Open access
https://content.sciendo.com/view/journals/helm/57/4/article-p353.xml

The mature spermatozoon of Khawia armeniaca, a monozoic caryophyllidean parasite of templar fish Capoeta capoeta sevangi (De Filippi, 1865) from the Lake Sevan, Armenia, has been studied using transmission electron microscopy and cytochemical technique of Thiery (1967) for the first time. The mature spermatozoon of K. armeniaca consists of a single axoneme with the 9+'1' trepaxonematan structure, cortical microtubules and nucleus which are situated parallel to the longitudinal axis of the spermatozoon, and a moderately electron-dense cytoplasm with glycogen particles. The cortical microtubules are arranged in one continuous semi-circle beneath the plasma membrane in Region II and anterior part of Region III of the mature spermatozoon. The two opposite rows of cortical microtubules are observed in the remaining nuclear and at the beginning of the postnuclear part (Regions III, IV) of the male gamete The number of cortical microtubules is remarkably variable in the spermatozoa of various Khawia species. K. armeniaca exhibits the highest number of cortical microtubules in comparison with K. sinensis and K. rossittensis. Glycogen was detected in the cytoplasm of prenuclear (II), nuclear (III) and postnuclear (IV) regions with different ultrastructural organization of the mature spermatozoon of K. armeniaca. Variations of sperm ultrastructural characters within caryophyllideans and other cestodes are discussed.
Permanent Link: http://hdl.handle.net/11104/0316447