Development of the viscerocranial skeleton during embryogenesis of the sea lamprey, Petromyzon Marinus.
Development of the viscerocranial skeleton during embryogenesis of the sea lamprey, Petromyzon Marinus.
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海七鳃鳗 (Petromyzon Marinus) 胚胎发生过程中内脏颅骨的发育。
DOI：
10.1002/dvdy.22164
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
McCauley,DavidW
中科院分区：
文献类型：
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作者：
Martin,WendyM;Bumm,LloydA;McCauley,DavidW
骨骼的进化是早期脊椎动物的一个关键转变。七鳃鳗缺乏矿化的骨骼，但拥有软骨神经颅和内脏颅元素。七鳃鳗的内脏骨骼发育成支持咽的融合鳃篮。在这里，我们已经适应了阿辛蓝染色的七鳃鳗软骨和软骨荧光，我们用来描述的鳃骨架inPetromyzon marinusbetween 17和63天的发展表明这种方法的结果。我们发现，骨骼杆发展从扁平盘状软骨细胞的凝聚，并可能涉及细胞嵌入。七鳃鳗的小梁、脊索旁和脊索下软骨由位于脊索腹面和侧面的多边形软骨细胞聚集而成。我们推测，形态差异与软骨的功能差异有关。我们发现，分化的骨骼杆来自神经嵴。最后，我们展示了鳃肌如何与鳃篮的骨骼杆穿插。发展动力学238：3126-3138，2009年。© 2009 Wiley利斯公司
Evolution of the skeleton was a key transition in early vertebrates. Lampreys lack a mineralized skeleton but possess cartilaginous neurocranial and viscerocranial elements. In lampreys, the visceral skeleton develops as a fused branchial basket supporting the pharynx. Here, we have adapted Alcian blue staining of lamprey cartilage and show this method results in cartilage fluorescence that we used to describe development of the branchial skeleton inPetromyzon marinusbetween 17 and 63 days of development. We show that skeletal rods develop from condensations of flattened discoidal chondrocytes and may involve cellular intercalation. Lamprey trabecular, parachordal, and subchordal cartilages consist of aggregations of polygonal chondrocytes positioned on the ventral and lateral surfaces of the notochord. We speculate that morphological differences relate to functional differences in the cartilage. We show that differentiated skeletal rods are derived from neural crest. Finally, we show how branchial muscles intercalate with skeletal rods of the branchial basket. Developmental Dynamics 238:3126–3138, 2009. © 2009 Wiley‐Liss, Inc.