首页 | 本学科首页   官方微博 | 高级检索  
     

脉红螺早期发育的观察
引用本文:郝振林,于洋洋,宋坚,常亚青,肖登兵,贲月. 脉红螺早期发育的观察[J]. 大连海洋大学学报, 2014, 0(1): 1-4
作者姓名:郝振林  于洋洋  宋坚  常亚青  肖登兵  贲月
作者单位:大连海洋大学农业部北方海水增养殖重点实验室,辽宁大连116023
基金项目:辽宁省科技厅重大攻关项目(200803001);国家“863”计划重大项目(2012AA10A412);国家海洋公益项目(201205031)
摘    要:在实验室条件下对脉红螺Rapana venosa早期个体发生及其发育过程进行了研究.结果表明:脉红螺的发育属间接发生型,其胚胎发育包括卵裂、囊胚、原肠胚、膜内担轮幼虫和膜内面盘幼虫;幼虫发育包括面盘幼虫、后期面盘幼虫和匍匐幼虫,匍匐幼虫经变态后发育为稚螺;在水温为21 ~22℃的条件下,受精卵需18 ~20 d发育至膜内面盘幼虫,经20~ 26 d后,面盘幼虫逐渐破膜而出;脉红螺面盘幼虫具有1对眼点和1对平衡囊,面盘呈双叶状,后期面盘幼虫的面盘中部开始凹陷,并逐步加深成4叶,呈蝶状,足发达,幼虫既能浮游又能爬行,随着进一步的生长发育,逐渐转入匍匐生活,成为稚螺.

关 键 词:脉红螺  受精卵  面盘幼虫  胚胎发育

Observation on early development of snail Rapana venosa
HAO Zhen-lin,YU Yang-yang,SONG Jian,CHANG Ya-qing,XIAO Deng-bing,BEN Yue. Observation on early development of snail Rapana venosa[J]. Journal of Dalian Fisheries University, 2014, 0(1): 1-4
Authors:HAO Zhen-lin  YU Yang-yang  SONG Jian  CHANG Ya-qing  XIAO Deng-bing  BEN Yue
Affiliation:( Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 116023, China)
Abstract:The incubation, embryonic and larval development were observed in snail Rapana venosa in a laboratory in this study. The indirect early development of the snail was divided into embryonic development including cleav- age, blastula, gastrula, trochophore, and intra-membrane veliger, and larval development composed of veliger, late veliger and crawling larvae ,which were metamorphosed into juveniles. It took about 18-20 d for the develop- ment from the fertilized egg to intra-membrane veliger and the veligers were hatched in 20-26 d at temperature of 21-22 ℃. The veligers had a pair of eyes, a pair of statoliths and bi-lobed velum, and the late veligers showed a velum with four-lobed like a butterfly, and the well-developed foot. The larvae swam and crept freely, and grew rapidly and gradually turned into crawing juveniles.
Keywords:Rapana venosa  zygote  veliger  embryonic development
本文献已被 CNKI 维普 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号