Ultrastructure of spermiogenesis and spermatozoa of Discocotyle sagittata (Monogenea: Polyopisthocotylea: Discocotylinea)

Title:

Ultrastructure of spermiogenesis and spermatozoa of Discocotyle sagittata (Monogenea: Polyopisthocotylea: Discocotylinea)

Creator:

Cable, Joanne and Tinsley, Richard C.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2dd836ce-ee42-4891-8ddf-efc438b96bed
uuid:2dd836ce-ee42-4891-8ddf-efc438b96bed
doi:10.14411/fp.2001.034

Subject:

Platyhelminthes, TEM, fluorescent nuclear labelling, spermatogenesis, and spermatozoon

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

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.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

209-216

Source:

Folia parasitologica | 2001 Volume:48 | Number:3

Harvested from:

CDK

Metadata only:

false