Development of the electric organ in embryos and larvae of the knifefish, Brachyhypopomus gauderio.
Development of the electric organ in embryos and larvae of the knifefish, Brachyhypopomus gauderio.
复制标题
DOI：
10.1016/j.ydbio.2020.06.010
复制
发表时间：
2020-10-01
影响因子：
2.7
通讯作者：
Kudoh T
中科院分区：
文献类型：
--
作者：
Alshami IJJ;Ono Y;Correia A;Hacker C;Lange A;Scholpp S;Kawasaki M;Ingham PW;Kudoh T
南美裸子形刀鱼具有能产生电场的电器官，用于电定位和电通信。鱼的电器官可以来源于肌源性细胞（肌源性电器官/mEO）或神经源性细胞（神经源性电器官/nEO）。迄今为止，EOs的萌芽发展仍然模糊不清。在这里，我们描述了裸子形钝鼻刀鱼（Brachyhypopomus gauderio） mEO的发育。我们发现EO原始细胞在胚胎阶段出现在尾肌瘤的腹侧边缘，在幼虫早期转移到腹鳍并发育成合胞电细胞。我们还描述了一对粗大的神经索，位于背主动脉侧面，其位置和特征形态使人联想到翼蛇类的nEO，这表明这些组织具有共同的进化起源。综上所述，我们的研究结果揭示了mEO的胚胎起源，并为阐明肌源性和神经源性eo产生电荷的进化多样化机制提供了基础。电钝鼻刀鱼胚胎和幼鱼的发育分期。肌源性电器官的原基起源于腹小体，在腹鳍内迁移，发育为电器官。白蛉神经密码与无翼蛇科神经源性电器官的进化守恒。
South American Gymnotiform knifefish possess electric organs that generate electric fields for electro-location and electro-communication. Electric organs in fish can be derived from either myogenic cells (myogenic electric organ/mEO) or neurogenic cells (neurogenic electric organ/nEO). To date, the embryonic development of EOs has remained obscure. Here we characterize the development of the mEO in the Gymnotiform bluntnose knifefish, Brachyhypopomus gauderio. We find that EO primordial cells arise during embryonic stages in the ventral edge of the tail myotome, translocate into the ventral fin and develop into syncytial electrocytes at early larval stages. We also describe a pair of thick nerve cords that flank the dorsal aorta, the location and characteristic morphology of which are reminiscent of the nEO in Apteronotid species, suggesting a common evolutionary origin of these tissues. Taken together, our findings reveal the embryonic origins of the mEO and provide a basis for elucidating the mechanisms of evolutionary diversification of electric charge generation by myogenic and neurogenic EOs. Developmental staging of the electric bluntnose knifefish, Brachyhypopomus gauderio embryos and larvae. The primordia of the myogenic electric organ originate in the ventral somite, migrate in the ventral fin and develop to the electric organ. Evolutionary conservation between the nerve codes in the B. gauderio and the neurogenic electric organs in the Apteronotidae.
登录
查看更多内容
DOI：
10.1007/bf01217916
发表时间：
1978-01-01
期刊：
JOURNAL OF NEUROCYTOLOGY
影响因子：
--
作者：
DENIZOT, JP;KIRSCHBAUM, F;TSUJI, S
通讯作者：
TSUJI, S
影响因子：
1.5
作者：
KIRSCHBAUM, F;MEUNIER, FJ
通讯作者：
MEUNIER, FJ
DOI：
10.1126/science.1254432
发表时间：
2014-06-27
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Gallant JR;Traeger LL;Volkening JD;Moffett H;Chen PH;Novina CD;Phillips GN Jr;Anand R;Wells GB;Pinch M;Güth R;Unguez GA;Albert JS;Zakon HH;Samanta MP;Sussman MR
通讯作者：
Sussman MR
影响因子：
--
作者：
Kirschbaum, F.;Schwassmann, H. O.
通讯作者：
Schwassmann, H. O.
影响因子：
2.5
作者：
KIMMEL, CB;BALLARD, WW;SCHILLING, TF
通讯作者：
SCHILLING, TF