Ultrastructure of spermiogenesis and spermatozoa of Discocotyle sagittata (Monogenea: Polyopisthocotylea: Discocotylinea)
Jazyk angličtina Země Česko Médium print
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
11699656
DOI
10.14411/fp.2001.034
Knihovny.cz E-zdroje
- MeSH
- buněčné jádro ultrastruktura MeSH
- elektronová mikroskopie metody MeSH
- endoplazmatické retikulum ultrastruktura MeSH
- fluorescenční mikroskopie metody MeSH
- Oncorhynchus mykiss parazitologie MeSH
- ploštěnci fyziologie ultrastruktura MeSH
- spermatidy ultrastruktura MeSH
- spermatocyty ultrastruktura MeSH
- spermatogeneze * MeSH
- spermie ultrastruktura MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Ultrastructural analysis revealed that the spermatozoon of Discocotyle sagittata (Leuckart, 1842) is composed of two parallel axonemes, mitochondrion, nucleus and cortical microtubules. The nucleus, which occupies a central/distal position and has an unusual crescent-shaped profile, is slightly shorter than the mitochondrial rod. The two axonemes, which are of unequal length, and the cortical microtubules (up to 68 forming a continuous ring in the principal region) extend almost the entire length of the spermatozoon. A fold of the plasma membrane creates a unilateral flange or undulating membrane. Epifluorescence microscopy indicated that spermatogenesis gives rise to clusters of 64 spermatids connected to a common cytophore. Spermiogenesis and the structure of the filiform sperm of D. sagittata conform to the typical polyopisthocotylean pattern.
Citace poskytuje Crossref.org
Spermatological characters of the aspidogastrean Aspidogaster limacoides Diesing, 1835
