TRIBULOIDES): IRREGULARITIES IN THE HYALINE LAYER, MICROMERES, AND PRIMARY MESENCHYME'
TRIBULOIDES): IRREGULARITIES IN THE HYALINE LAYER, MICROMERES, AND PRIMARY MESENCHYME'
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Tribuloides）：透明层、微粒和初级间充质的不规则性
DOI：
10.2307/1541114
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发表时间：
1981
影响因子：
4.7
通讯作者：
T. E. Schroeder
中科院分区：
文献类型：
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作者：
T. E. Schroeder
紫核海胆的正常胚胎发育。用光学显微镜和电子显微镜描述了从受精到双臂幼虫后期的幼虫。不寻常的发育特征包括几乎没有透明层，微粒的数量和大小不规则，完全缺乏早期间质（所谓的初级间质）。这些特征和其他特征不同于欧盟棘类动物（<e:2> - œmodernâ -海胆）的发育特征。并结合海胆的生理发育进行了讨论。Eucidanis tnibu !Oides可能会表现出<e:1> ？原始海胆发育模式代表了所有现存海胆共同的cidaroid祖先。
The normal embryonic development of the cidaroid sea urchin Eucidaris tn bu!oides from fertilization to the late two-armed larval stage is described with the aid of light and electron microscopy. Unusual developmental features include a virtual absence of a hyaline layer, irregularities in the number and size of micro meres, and a total lack of early mesenchyme (the so-called primary mesenchyme). These and other features are unlike developmental characters in the eu echinoids (“modern†sea urchins). They are discussed with reference to the phy logeny of sea urchins. Eucidanis tnibu!oides may exhibit “?�primitive†developmental patterns representative of the cidaroid ancestor which was common to all living sea urchins.