锯缘青蟹生殖肢腺体的结构与功能  

The Structure and Function of the Gonopod Tegumental Glands of Scylla serrata

作　　者：管卫兵[1] 王桂忠[1] 李少菁[1] 林琼武[1] 孔详会[1] 谭树华[1] 

机构地区：[1]厦门大学海洋学系近海海洋环境科学国家重点实验室(厦门大学),福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2006年第1期94-97,共4页Journal of Xiamen University：Natural Science

基　　金：国家863项目(2002AA603013)资助

摘　　要：青蟹雄性腹肢具有生殖肢腺体（GTG）．雄性第一腹肢向末端逐渐变成一细薄的弯曲突起．腺体主要集中于腹肢距基部长度的2／5处，即第二腹肢入口处的附近，末端也有少量分布．腺体在组织学上和玫瑰状的皮腺相似，群绕着射精管腔．经染色表明腺体含有中性粘多糖（NMPS）和酸性粘多糖（AMPS），同一批腺体．甚至同一个腺体两种类型糖类的染色状况有异．腺体由分泌细胞和管细胞组成，管细胞含有一导管，多个导管形成网络．导管末端通向交接器内壁表皮开孔处，孔径约为2．5～3．5pm，这些孔通向交接器管腔，孔中及开口处分泌物的染色性质和腺体中相似．第二腹肢也具有腺体，但分布较少．且不太集中．GTG分泌物可能具有几个复杂的功能，其中低粘度的NMPS可能有助于加速强粘性精液通过狭窄的交接器管腔作用，而高粘度的AMPS功能则更为复杂．The gonopod tegumental glands （GTG） of Scylla serrata grouped about the ejaculatory canal. The first gonopod tapered quickly to a thin,curved process terminating in a point. Tegumental glands were located at approximately 2/5 of the gonopod length, also some situated much further between approximately 3/5 or 4/5 of the gonopod length. GTG resembling the PTG （pleopod tegumental glands）. The same group glands or a single gland show different intensely staining neutral mucopolysaccharide （NMPS） and an intensely staining acid mucopolysaccharide （AMPS）. Each gland consists of secretory cells and a canal cell which are arranged in resettes. The canal cell contains a ductules and terminaing in pores which traverse the thin cuticle of the ejaculatory canal. The glands communicate with the lumen of the ejaculatory canal via ducts which pass through large （2.5-3.0μm） cuticular pores. Saining affinities of secretions at the pore openings to the ejaculatory canal lumen match those of the glands. GTG also present in the second gonopods with low level. The low viscosity NMPS could thus be used to facilitate the passage of the more viscous vas deferens ejaculate in the narrow ejaculatory canal,wheres the more viscous AMPS could have more complicate function.

关 键 词：锯缘青蟹 生殖肢腺体 雄性腹肢 交配系统 

分 类 号：Q17[生物学—水生生物学]