한국패류학회지 (The Korean Journal of Malacology)
- 제22권2호
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- Pages.115-124
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- 2006
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- 1225-3480(pISSN)
Ultrastructure of Germ Cells during Spermatogenesis and the Reproductive Cycle in Male Meretrix petechialis on the West Coast of Korea
초록
Gonad index, spermatogenesis and the reproductive cycle of Meretrix petechialis were investigated by cytological, histological observations. Monthly changes in the gonad index coincides the gonadal development. The morphology of the spermatozoon had a primitive type and is similar to that of other bivalves having a short mid-piece with five to six mitochondria surrounding the centrioles. The morphology of the sperm nucleus type and the acrosome shape of this species were cylindrical type and cap-like shape, respectively. The spermatozoon was approximately 40-45