福寿螺齿舌、性腺和卵粒结构扫描电镜观察  

Ultrastructure of radula,gonad and spawn of Pomacea canaliculata(Lamarck) observed with scanning electron microscopy

作　　者：王志高[1] 谭济才[1] 刘军[1,2] 李密[1] 邹剑锋[3] 何满庭[4] 钟浪[1] 

机构地区：[1]湖南农业大学生物安全科学技术学院,湖南长沙410128 [2]湖南环境生物职业技术学院,湖南衡阳421005 [3]湖南农业大学分析测试中心,湖南长沙410128 [4]湖南省农业厅农业环境监测站,湖南长沙410005

出　　处：《广东农业科学》2010年第10期110-112,共3页Guangdong Agricultural Sciences

基　　金：湖南省财政基金(湘财农指[2009]55号)

摘　　要：利用扫描电镜对福寿螺的齿舌、精巢、卵巢和卵粒结构进行观察分析,结果表明:福寿螺的齿舌为纽舌型,齿式为(2·1·1·1·2)×35,各个齿的尖端锋利。雄螺精巢结构较简单无生精小管,生精细胞通过基膜着生在分枝的结缔组织上,精巢腔呈网状,彼此相通;结缔组织小梁间腔内分布着球状、大小不等、数量繁多的各级精细胞。雌螺卵巢较大,呈粉红色树枝状,紧贴在消化腺上;卵巢的主体结构是滤泡,卵母细胞在滤泡内发育成熟;卵母细胞分布均匀,大小之间无明显区别。发育7d的卵粒表面散乱地分布着不规则的膏状物;发育14d的卵粒表面膏状物稀少,卵粒表面有高低起伏的褶皱,表层物有裂痕。The ultrastructure,especially the radula,spermary,ovary and spawn of Pomacea canaliculata（Lamarck） were observed and analyzed under scanning electron microscope.The radula of Pomacea canaliculata（Lamarck） was taenoglossate radula,dentition formula（2·1·1·1·2）×35,the cusp of teeth was sharp.Structure of the spermary was simple,didn＇t have seminiferous tubule,spermatogenic cells attach on the branches of the connective tissue through basement membranae,lumen of spermary is reticulation and interlinked with each other.All levels of globular spermatids distributing in the cavity of trabecular connective tissue.Female snails ovary was large,pink dendrites,closing to the digestive gland.The main structure of ovarian is follicle,and oocytes grow and mature in the follicle,the observed oocytes were well-distributed and had no significant differences between the size.Irregular soft liquid dispersed the surface of the 7 d spawn,compared with the less on the 14 d spawn,but there were ups and downs of the drape and fissure on the latter.

关 键 词：福寿螺 齿舌 性腺 卵粒 扫描电镜 

分 类 号：S433[农业科学—农业昆虫与害虫防治] Q959.212[农业科学—植物保护]