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  • Title: [Relationship between the growth rate of vitellogenic whitefish oocytes and the functional state of liver cells].
    Author: Semenov VV.
    Journal: Arkh Anat Gistol Embriol; 1980 Mar; 78(3):98-107. PubMed ID: 7396740.
    Abstract:
    The development of sex gland has been studied in pelchir (Coregonus peled x C. chir), males and females. Most of females have been stated to be false hermaphrodites, and in males the testis develops normally. In pelchir the most intensive oocytic growth has been demonstrated to occur during winter--spring and autumn seasons, that is at the lowest temperature. An attempt has been made to connect the occytic growth rate with the liver functional state. It has been found that after spawning in pelchir, peled, ludoga-gwyniad a considerable part of cell population of the liver light cells degenerate, nevertheless, the cells (both light and dark) that are not subjected to degeneration would produce proteins for "export", since they have a well developed granular endoplasmic reticulum. In two months after spawning, synthetic activity of the liver cells increases, that is morphologically evident from an abundant development of the endoplasmic network and appearance of liposomes. It has been suggested that initial stages on formation of yolk inclusions in oocytes take place at the expense of autosynthetic processes, and during the period of active vitellogenesis--at the expense of heterosynthetic processes.
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