Localization of swimbladder and pectoral motoneurons involved in sound production in pimelodid catfish.
Localization of swimbladder and pectoral motoneurons involved in sound production in pimelodid catfish.
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鲶鱼中参与声音产生的鳔和胸运动神经元的定位。
DOI：
10.1159/000113572
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Fine,ML
中科院分区：
文献类型：
--
作者：
Ladich,F;Fine,ML
我们本地化的运动神经元和枕部和真正的脊髓神经支配的声音产生的器官在pimelodid鲶鱼。皮美龙科有一个由胸鳍带和第一胸鳍鳍条组成的发声器官，一个带有外部肌肉的鱼鳔，以产生鼓声，以及一个插入鱼鳔的三足张肌（TT）。声肌由枕神经（Oc）的三个分支（吻侧、背侧和尾侧）和前两个真脊神经（S1和2）支配：胸棘肌（外展肌、内收肌和腹侧旋转肌）由Oc的吻侧分支和S1和2支配，击鼓肌由Oc的尾侧分支和S1和2的分支支配，TT由Oc的背侧分支支配。声核在同侧延髓尾侧和脊髓内形成内侧、中间和腹外侧柱。胸神经元形成腹外侧运动柱，第一棘神经元占据该柱的吻侧部分。鳔鼓运动核内侧部位于中央管和内侧纵束之间的中线上。DM核的吻极腹外侧扩展，包括中间位置（DMi）的神经元的人口。TT核也位于DMm腹外侧的中间位置。胸，TT和DMi有一个有限的rostrocaudal范围，而DMm进一步延伸到尾部。这些数据表明，鱼类可以进化出多个声音运动核团，并且声音产生器官可以由枕神经和脊神经并行支配。
We localized the motoneurons and occipital and true spinal innervation of sound-producing organs in pimelodid catfish. Pimelodids have a stridulatory organ composed of the pectoral girdle and the first pectoral fin ray, a swimbladder with extrinsic muscles to produce drumming sounds, and a tensor tripodis (TT) muscle that inserts on the swimbladder. Sonic muscles are innervated by three branches (rostral, dorsal and caudal) of the occipital nerve (Oc) and the first two true spinal nerves (S1 and 2): pectoral spine muscles (abductor, adductor and ventral rotator) by the rostral branch of Oc and S1 and 2, drumming muscle by the caudal branch of Oc and twigs of the S1 and 2, and TT by the dorsal branch of Oc. Sonic nuclei form ipsilateral medial, intermediate and ventrolateral columns in the caudal medulla and spinal cord. Pectoral neurons form a ventrolateral motor column, and neurons for the first spine occupy the rostral part of the column. The medial division of the swimbladder drumming motor nucleus (DMm) is situated on the midline between the central canal and the medial longitudinal fasciculus. The rostral pole of the DM nucleus expands ventrolaterally to include a population of neurons of intermediate position (DMi). The TT nucleus also assumes an intermediate position ventrolateral to DMm. The pectoral, TT, and DMi have a restricted rostrocaudal extent, whereas DMm extends further caudally. These data demonstrate that fish can evolve multiple sonic motor nuclei and that sound producing organs can be innervated in parallel by occipital and spinal nerves.