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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 217 (1981), S. 415-424 
    ISSN: 1432-0878
    Keywords: Secondary spermatocytes ; Spermatids ; Spermatozoa ; Marine teleost ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Sequential cytological events in late spermatogenesis of Liza aurata were studied from the stage secondary spermatocytes to that of mature spermatozoa. Spermiogenesis involves preparatory morphological events followed by conspicuous modifications such as intracellular movements (diplosome and mitochondrion migration, spermatid lengthening, nuclear rotation) and structural changes (dense chromatin granules, increase in size of mitochondria, loss of cytoplasm). Mature spermatozoa, with a round nucleus and a pseudo-midpiece are of a primitive type, even compared with spermatozoa of other teleosts.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 207 (1980), S. 123-134 
    ISSN: 1432-0878
    Keywords: Previtellogenic oocytes ; Marine teleost ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Sequential cytological events at the onset of previtellogenesis were studied in oocytes from 12 μm to 70 μm in diameter of golden grey mullet. The main cytological changes observed (increase in size of cell, nucleus, nucleolus and increase in number of nucleoli, RNP particles, “nuage” and mitochondria) provide evidence for important synthetic processes in an early preparatory phase of oocyte development. Somatic cells (pre-follicle, follicle and thecal) are also described.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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