| 日本沼虾胚胎发育的形态及组织学观察 |
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| 引用本文： | 陈 瑛,朱 琴,陈 辉,朱小玲,崔 峥,邱高峰.日本沼虾胚胎发育的形态及组织学观察[J].上海海洋大学学报,2012,21(1):33-40. |
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| 作者姓名： | 陈 瑛 朱 琴 陈 辉 朱小玲 崔 峥 邱高峰 |
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| 作者单位： | 上海海洋大学 农业部水产种质资源与利用重点开放实验室;上海海洋大学 农业部水产种质资源与利用重点开放实验室;上海海洋大学 农业部水产种质资源与利用重点开放实验室;上海海洋大学 农业部水产种质资源与利用重点开放实验室;上海海洋大学 农业部水产种质资源与利用重点开放实验室;上海海洋大学 农业部水产种质资源与利用重点开放实验室 |
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| 基金项目： | 上海市浦江人才计划项目（08PJ1409000）；上海市科学技术委员会自然科学基金（07JR14102）；上海市教育委员会科研创新项目（08ZZ80）；上海市教育委员会重点学科建设项目(J50701)；教育部科学技术研究重点项目 （209046） |
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| 摘 要： | 在解剖镜和显微镜下对日本沼虾胚胎发育进行了形态学和组织学观察。根据日本沼虾胚胎发育过程中的形态特征,将其划分为受精卵、卵裂期、囊胚期、原肠期、前无节幼体期、后无节幼体期、前溞状幼体期以及膜内溞状幼体期。日本沼虾卵裂属于完全卵裂和不完全卵裂之间的过渡类型,无囊胚腔。3对附肢原基在前无节幼体期形成,胚胎在前溞状幼体期腹部开始分节,复眼色素也在前溞状幼体期出现,随后复眼色素区域逐渐增加,到膜内溞状幼体期孵化时复眼结构成熟。腹部分节和复眼色素的出现表明胚胎进入前溞状幼体期。随着胚胎发育的进行,由于附肢的形成和分化,与前几个时期相比,胚胎发育的最后4个时期所持续的时间较长。研究亮点:针对日本沼虾胚胎无节幼体期和溞状幼体期划分目前存在的争议,通过胚胎外部形态与组织切片相结合的观察方法,对其胚胎发育过程进行了再研究,澄清了这两个时期的划分。同时,阐明日本沼虾卵裂类型,并分析了日本沼虾发育时间长的原因。
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| 关 键 词： | 日本沼虾 胚胎发育 形态学 组织学 |
The morphological and histological observation of embryonic development in the oriental river prawn Macrobrachium nipponense |
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| CHEN Ying,ZHU Qin,CHEN Hui,ZHU Xiao-ling,CUI Zheng and QIU Gao-feng.The morphological and histological observation of embryonic development in the oriental river prawn Macrobrachium nipponense[J].Journal of Shanghai Ocean University,2012,21(1):33-40. |
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| Authors: | CHEN Ying ZHU Qin CHEN Hui ZHU Xiao-ling CUI Zheng and QIU Gao-feng |
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| Institution: | (Key Laboratory of Aquatic Genetic Resources and Utilization Certificated by Ministry of Agriculture,Shanghai Ocean University,Shanghai 201306,China) |
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| Abstract: | In this study,morphological and histological methods were used to observe the embryonic developmental process of the oriental river prawn Macrobrachium nipponense.According to its morphological characteristics,the embryonic developmental process can be devided into eight stages:(a) Fertilized egg,(b) Cleavage stage,(c) Blastula stage,(d) Gastrula stage,(e) Embryonized-nauplius stage,(f) Embryonized-metanauplius stage,(g) Embryonized-protozoea stage,and(h) Embryonized-zoea stage.The cleavage pattern of the oriental river prawn was the transitional pattern between complete cleavage and meroblastic cleavage.The embryo has no blastocoele.Rudiments of the three paired naupliar appendages were organized at the embryonized-nauplius stage.The abdominal region was organized into segments at the embryonized-protozoea stage.Pigments of compound eyes appeared at the embryonized-protozoea stage,and then the pigmental region continued to increase.At the embryonized-zoea stage,structures of the compound eyes reached relative maturity.The segmentation of the abdominal region and the appearance of the pigments indicated that the embryo has been in the embryonized-protozoea stage.The duration of last four embryonic developmental stages were longer than that of other stages,owing to the formation and differentiation of the appendages at later stages. |
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| Keywords: | Macrobrachium nipponense embryonic development morphology histological |
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