文章摘要
上官步敏,刘正琮,李少菁.锯缘青蟹卵巢发育的组织学观察[J].水产学报,1991,15(2):96~103
锯缘青蟹卵巢发育的组织学观察
HISTOLOGICAL STUDIES ON OVARIAN DEVELOPMENT IN SCYLLA SERRATA
投稿时间:1990-07-01  修订日期:1990-10-01
DOI:
中文关键词: 卵子发生  卵巢发育  锯缘青蟹
英文关键词: oogenesis  ovarian development  Scylla serrata
基金项目:
作者单位
上官步敏 厦门大学 
刘正琮 厦门大学 
李少菁 厦门大学 
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中文摘要:
      根据锯缘青蟹卵巢的外部形态和内部组织学特征,卵巢发育可以划分为六个时期:未发育期、发育早期、发育期、将成熟期、成熟期和排卵后期。在发育早期,多数卵母细胞胞质中有多个嗜酸性液泡,这种结构在其他十足类卵母细胞中较少见。少数个体在发育早期发生卵母细胞全面退化,这种现象可能是缺乏交配或饥饿造成的。
英文摘要:
      The oogenesis and ovarian development of the mud crab, ScyllaSerrata, were described. Based on the changes of nucleus and cytoplasm of germcells, vitellus formation and relationship between oocytes and follicle cells, oogene-sis of Scylla serrata, being similar to those found in other decapods,can be devidedinto three stages, i. e., oogonia, previtellogenic and vitellogenic oocytas. Basedmainly on the development of germ cells and follicle cells in ovary, also on theexternal features of ovary (size. morphology, color, etc.), the ovarian developmentcan be derided into six stages as follows. Ⅰ. Undeveloped stage, an inactive phase of oogenesis. The ovaries at this stageare ribbonlike, small and transparent. There is only a few germ cells in the ovaryand no obvious multiplication could be observed. Ⅱ. Early-developing stage, active proliferation of oogonis, differentiation andearly development of oocytes. The ovariesat this stage increase gradually in sizeand attain a zigzag contour with milk-white color. Ⅲ. Developing stage, a main period of vitellus formation. The ovaries increaserapidly in size, being pale-yellow to yellow in colour. Ⅳ. Nearly-ripe stage,the ovaries in this stage become large in size and orangeto reddish-orange in colour. Ⅴ. Ripe stage, the ovaries remain same size as in stage Ⅳ, besides the discernibleprojecting follicles and bright reddish-orange colour. For the accumulation of agreat amount of yolks, the oocytes appears to maximum ia volume, and the nucleibreakup. Ⅵ. Post-spawning stage, after spawn, the ovaries degenerate, small in sizeand become grey and semi-transparent. The spent ovaries contain few residual oocy-res, which degenerate and absorbed. Some vacuoles, which hardly appear in other decapod oocytes, were found inmost previtellogenic oocytes of Scylla serrata. Extensive ovarian degeneration werefound fna few individuals at early-developing stage, which might be resulted fromlac of mating or starvation etc.
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