Ultrastructure of Spermatogenesis in the Testis of Paragonimus heterotremus
The Korean Journal of Parasitology
; : 669-676, 2013.
Article
in En
| WPRIM
| ID: wpr-118757
Responsible library:
WPRO
ABSTRACT
Lung fluke, Paragonimus heterotremus, is a flatworm causing pulmonary paragonimiasis in cats, dogs, and humans in Southeast Asia. We examined the ultrastructure of the testis of adult P. heterotremus with special attention to spermatogenesis and spermiogenesis using scanning and transmission electron microscopy. The full sequence of spermatogenesis and spermiogenesis, from the capsular basal lamina to the luminal surface, was demonstrated. The sequence comprises spermatogonia, spermatocytes with obvious nuclear synaptonemal complexes, spermatids, and eventual spermatozoa. Moreover, full steps of spermatid differentiation were shown which consisted of 1) early stage, 2) differentiation stage representing the flagella, intercentriolar body, basal body, striated rootlets, and electron dense nucleus of thread-like lamellar configuration, and 3) growing spermatid flagella. Detailed ultrastructure of 2 different types of spermatozoa was also shown in this study.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Paragonimus
/
Spermatogenesis
/
Spermatozoa
/
Testis
/
Microscopy, Electron, Scanning
/
Microscopy, Electron, Transmission
Limits:
Animals
Language:
En
Journal:
The Korean Journal of Parasitology
Year:
2013
Type:
Article