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锯缘青蟹生殖肢腺体的结构与功能

Abstract

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2.5~3.5μm,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. 【英文摘要】 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 staini...国家863项目(2002AA603013)资

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