稻水象甲精子尾部的超微结构  

Ultrastructures of spermatozoon tail in rice water weevil,Lissorhoptrus oryzophilus Kuschel(Coleoptera,Curculionidae)

作　　者：贺艳[1] 季相华[1] 蒋明星[1] 程家安[1] 

机构地区：[1]浙江大学农业与生物技术学院昆虫科学研究所,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》2008年第4期355-360,共6页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：国家重点基础研究发展计划973"资助项目(2002CB111403);浙江省自然科学基金资助项目(Y307107)

摘　　要：为了解稻水象甲(Lissorhoptrus oryzophilusKuschel)精子形成过程,通过扫描电镜照片观察其精子形成过程中部分时期的尾部超微结构.发现该虫精子鞭毛内部由2个线粒体衍生物、2个副体、1个中心粒侧体和1个微管系统(轴丝)构成,轴丝由9个副微管、9对双微管和2个中央微管组成,属典型的9+9+2构型.在精子形成过程中,两线粒体衍生物的形态和内容物有显著差异,中心粒侧体在后期才出现,包围线粒体衍生物、副体、中心粒侧体的微管在后期则全部消失.表明稻水象甲精子的形成过程相似于已报道的一些鞘翅目昆虫,但在线粒体衍生物、中心粒侧体、微管的发生上有其一定的特殊性.Ultrastructures of spermatozoon tail in the rice water weevil, Lissorhoptrus oryzophilus, were observed via transmission electron microscopy at selected sperm developmental stages with the aim at clarifying spermiogenesis in this weevil. The flagellum interior is composed of two mitochondrial derivatives, two accessory bodies, one centriole adjunct and one microtubule system （axoneme）. The axoneme consists of nine accessory microtubules, nine peripheral doublets of microtubules and two central microtubules, displaying a typical 9＋9 ＋ 2 pattern. The two mitochondrial derivatives have different shapes and contents during the spermiogenesis. The centriole adjunct occurs late, and the microtubules surrounding mitochondrial derivatives, accessory bodies and centriole adjunct disappear in late spermiogenesis stages. In conclusion, L. oryzophilus has a similar spermiogenesis with several other coleopterans reported, meanwhile it possesses some specifity in terms of the occurrence of mitochondrial derivatives, centriole adjunct and microtubules.

关 键 词：稻水象甲 精子形成 精子 超微结构 

分 类 号：Q964[生物学—昆虫学]