Abnormal Gametogenesis, Male Dominant Sex Ratio, and Sertoli Cell Morphology in Induced Triploid Mussels, Mytilus galloprovincialis

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概要

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• Gametogenesis of one year-old induced triploid mussels, Mytilus galloprovincialis, was examined histologically and compared to sibling diploid mussels. Histological analysis revealed that triploid mussels developed a number of primary spermatocytes that were arrested at prophase I. Late in the reproductive season, triploid mussels produced an extremely small number of spermatozoa (9/10000 μm^2 gonadal section) compared to diploid mussels (1072/10000 μm_2 gonadal section). All triploid mussels were identified as males, whereas the sex ratio of diploid mussels was almost equal (1.12:1.0, male:female),indicating that sex determination for this species may follow a Z:W model. Sertoli cells in triploid mussels were prominent, had an enlarged cytoplasm, and were easily seen using light microscopy. In comparison, Sertoli cells in diploids were thin and could only be seen by electron microscopy. Sertoli cell hypertrophy in triploid mussels probably reflects their role in eliminating abnormal and degenerating germ cells.

• 社団法人日本動物学会の論文
• 1996-06-15

著者

• Kiyomoto Masato

  Tateyama Marine Laboratory Marine And Coastal Research Center Ochanomizu University

• Kiyomoto Masato

  Marine And Coastal Research Center Ochanomizu University

• Kiyomoto Masato

  Marine And Costal Research Center

• Kiyomoto Masato

  Tateyama Marine Laboratory Ochanomizu University

• Kiyomoto Masato

  Department Of Biology Ochanomizu University

• Kiyomoto M

  Ochanomizu Univ. Chiba Jpn

• Komaru Akira

  National Research Institute of Aquaculture, Fisheries Agency

• Scarpa John

  Harbor Branch Oceanographic Institute, Fort Pierce

• Wada Katsuhiko

  National Research Institute of Aquaculture, Fisheries Agency

• Danton Emmanuelle

  Laboratoire de Biologie et Biotechnologies Marines, Institut de Biochimie et de Biologie Appliquees

• Awaji Masahiko

  National Research Institute of Fihseries Science

• Scarpa J

  Harbor Branch Oceanographic Inst. Inc. Fl Usa

• Scarpa John

  Harbor Branch Oceanographic Institute Fort Pierce

• Komaru A

  Mie Univ. Mie Jpn

• Wada Katsuhiko

  National Research Institute Of Aquaculture Fisheries Agency

• Awaji Masahiko

  National Research Institute Of Aquaculture

• Danton Emmanuelle

  Laboratoire De Biologie Et Biotechnologies Marines Institut De Biochimie Et De Biologie Appliquees

• KOMARU Akira

  National Research Institute of Aquaculture

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