作　　者： ; ; ; ;

机构地区： 广东海洋大学水产学院

出　　处： 《热带海洋学报》 2010年第6期57-64,共8页

摘　　要： 应用组织切片技术对细角螺Hemifusus ternatanus性腺发育及生殖细胞发生进行研究。结果表明,细角螺为雌雄异体。精巢为多分枝管状腺,由生精小管和输精小管组成;精巢发育可分为4个时期,即增殖期、生长期、成熟期和休止期。精原细胞紧靠生精小管的基膜,由基膜向管腔依次排列着不同发育时期的生精细胞:初级精母细胞、次级精母细胞、精子细胞和精子。精巢发育显示为多次性成熟、多次排精的方式。根据细胞的大小和所含卵黄颗粒的大小,卵母细胞发育过程分为繁殖期、生长期和成熟期;根据滤泡大小、结构、内含物的变化将卵巢的发育分成5个时期:增殖期、生长期、成熟期、排放期和休止期。最后对细角螺特殊个体的出现进行初步讨论。 The gonadal and germ cell development of Hemifusus ternatanus was studied by using the tissue sectioning tech-nique.The results showed that H.ternatanus was sexually dioecious.Spermary was of multi-branched tubular structure,con-sisting of spermatogenic and seminiferous tubules.The development of spermary was divided into four stages,namely prolif-erating stage,growing stage,maturing stage and resting stage.Spermatogonia adjoined to the basal membrane of spermato-genic tubules.Spermatogenic cells that lay in varying developmental phases were sequentially arranged from basal membrane to tubular lumen,including primary spermatocytes,secondary spermatocytes,spermatozoa,and sperm.Spermary could be sexually matured and released in a repeated way.According to the size of germ cells and yolk granules,the ovarian develop-ment of H.ternatanus could be divided into the following three stages： proliferating stage,growing stage and maturing stage.Based on the change in follicle size,structure,and contents,ovarian development was divided into proliferating,growing ma-turing,spawning and resting stages.In addition,sex reversal phenomenon in H.ternatanus was discussed in this paper.

关 键 词： 细角螺 精子发生 精巢发育 卵子发生 卵巢发育

领　　域： [天文地球] [天文地球]