Bone development in the jaw of Nile tilapia Oreochromis niloticus (Pisces: Cichlidae)
Bone development in the jaw of Nile tilapia Oreochromis niloticus (Pisces: Cichlidae)
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DOI：
10.1111/j.1440-169x.2008.01032.x
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发表时间：
2008-06-01
影响因子：
2.5
通讯作者：
Okada, Norihiro
中科院分区：
文献类型：
--
作者：
Fujimura, Koji;Okada, Norihiro
东非慈鲷已经进化出适应其不同摄食行为的摄食器形态。口腔颌骨形态的进化是通过发育过程中骨形成的多样性来完成的。为了进一步了解这一进化过程，我们使用尼罗罗非鱼 Oreochromis niloticus 作为慈鲷模型，检查了下颌的骨骼元素及其出现的时间和顺序，按发育阶段进行分类。我们发现软骨形成开始于第17阶段。真皮骨的类骨沉积开始于第18阶段。钙的吸收在第20阶段从幼虫表面急剧转移到鳃。骨骼的骨矿化开始于第25阶段。这些数据提供了有关东非慈鲷颅面发育顺序事件的重要信息，并为研究颌结构适应摄食行为的分子机制奠定了基础。
East African cichlids have evolved feeding apparatus morphologies adapted to their diverse feeding behaviors. The evolution of the oral jaw morphologies is accomplished by the diversity of bone formation during development. To further understand this evolutionary process, we examined the skeletal elements of the jaw and their temporal and sequential emergence, categorized by developmental stages, using the Nile tilapia Oreochromis niloticus as a model cichlid. We found that chondrogenesis started in Stage 17. The deposition of osteoid for the dermal bones commenced in Stage 18. The uptake of calcium dramatically shifted from the surface of larvae to the gills in Stage 20. The bone mineralization of the skeleton began in Stage 25. These data provide important information regarding the sequential events of craniofacial development in East African cichlids and lay the groundwork for studying the molecular mechanisms underlying adaptation of jaw structure to feeding behavior.