Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Ultrastructure of Pseudogobio esocinus (Teleostei, Cyprinidae) Spermiogenesis and Spermatozoa

모래무지(Teleostei, Cyprinidae) 정자변형과정과 정자의 미세구조

  • Kim, Kgu-Hwan (Department of Radiologic Technology, College of Daegu Health) ;
  • Kwon, Deok-Mun (Department of Radiologic Technology, College of Daegu Health) ;
  • Lee, Jun-Ill (Department of Radiologic Technology, College of Daegu Health) ;
  • Jung, Sung-Bae (Department of Biology, School of Graduate, University of Daegu)
  • 김구환 (대구보건대학 방사선과) ;
  • 권덕문 (대구보건대학 방사선과) ;
  • 이준일 (대구보건대학 방사선과) ;
  • 정성배 (대구대학교대학원 생물학과)
  • Published : 2007.06.30
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Abstract

Spermiogenesis and mature spermatozoa of the Korean false minnow Pseudogobio esocinus (Cyprinidae) are described by means of scanning and transmission electron microscopy. Spermiogenesis is characterized by lateral development of the flagellum, absence of nuclear rotation, and eccentric nuclear fossa formation. The spermatozoa have a spherical head containing a nucleus with highly condensed chromatin and no acrosome. The nuclear fossa contains the proximal centriole and anterior part of the distal centriole. The midpiece is type A II and contains semi-fused mitochondria around the axoneme. However, the symmetrical distribution of 4 or more the mitochondria does not follow a general pattern of the cyprinid spermatozoa. Cytoplasmic vesicles in the midpiece are common in Cypriniformes and some of Siluriformes and Characiformes spermatozoa.

Keywords

References

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