The development of lateral-line receptors in Eigenmannia (Teleostei, Gymnotiformes). I. The mechanoreceptive lateral-line system.
The development of lateral-line receptors in Eigenmannia (Teleostei, Gymnotiformes). I. The mechanoreceptive lateral-line system.
复制标题
Eigenmannia（Teleostei，Gymnotiformes）侧线受体的发育。
DOI：
10.1159/000115929
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Vischer,HA
中科院分区：
文献类型：
--
作者：
Vischer,HA
在模拟热带雨季的条件下，诱导弱电鱼产卵。制备不同年龄胚皮进行组织学检查，并用各种组织学方法和扫描电镜对全动物进行检查。发现电感觉系统是在第一批机械感受系形成后发展起来的。结节和壶腹器官最初形成于侧线系统的两侧。结节器官的发育速度是壶腹器官的5倍。这两类电感受器在头部的发育速度是躯干的4倍。第一个结节器官在第7天在头部发育，第8天在躯干发育。在鱼的生长过程中，它们的数量和大小都会增加。壶腹器官在第8天开始在头部和躯干最吻侧形成。它们深埋在核芯中，与成人的受体细胞数量相同。在由单一神经分支支配的受体范围内，有壶腹和结节器官。
Weakly electric fish of the genusEigenmanniawere induced to spawn in conditions simulating the tropical rainy season. The skin of embryos of different ages was prepared for histological examination, and whole animals were examined by various histological methods and scanning electron microscopy. It was found that the electrosensory system develops after the first mechanoreceptive lines have formed. The tuberous and ampullary organs initially form adjacent to the lines of the lateral-line system. The tuberous organs develop at a rate 5 times higher than that of the ampullary organs. The rate of development for both classes of electroreceptors is 4 times higher on the head than on the trunk. The first tuberous organs develop on the head at day 7 and on the trunk at day 8. They increase in number and size during the growth of the fish. The ampullary organs begin to form on the head and on the most rostral part of the trunk at day 8. They are deeply sunk into the corium and have the same number of receptor cells as in adults. There are both ampullary and tuberous organs within fields of receptors that are innervated by a single nerve branch.