嘉庚蛸雌性生殖系统组织学观察

对象山港自然海区中的嘉庚蛸(Octopus tankahkeei)雌性生殖系统的组织学结构进行了研究.结果表明,雌性生殖系统由卵巢、输卵管、输卵管腺组成.卵巢单个、球形,内包裹滤泡细胞围成的卵子,输卵管1对,开口于外套腔中部,每条输卵管中部膨大形成圆球状的输卵管腺.近端输卵管内具两瓣蘑菇状突起,上有不规则短指状分枝,突...

Histological Study of Reproductive System of the Female Octopus tankahkeei

The morphological structure of female reproductive system of Octopus tankahkeei was investigated from August,2002 to December,2003. The female reproductive system of O.tankahkeei, like many cephalopods,is composed of three parts morphologically: ovary,oviduct,and oviducal gland.The ovary is a single structure,which contains oocytes at different stages.The oocytes are surrounded by a layer of columnar follicle cells which enfold into the oocyte cytoplasm and their nuclei are arranged along the longitudinal axis of the cells.Different from proximal oviduct,mushroom-like protruding enwrapped by many finger-like folds lies in the distal oviduct.The oviducal gland can be divided into three parts: central lumen,spermathecaes,and gland tissue.The twenty-four spermathecaes are special parts in oviduct gland which contain spermatozoa after coupling.We propose to divide the ovarian cycle of O.tankahkeei into four phases: previtellogenesis,early vitellogenesis,full vitellogenesis,and late vitellogenesis phases.