Temporal and mosaic distribution of large ganglion cells in the retina of a daggertooth aulopiform deep-sea fish (Anotopterus pharao).
Temporal and mosaic distribution of large ganglion cells in the retina of a daggertooth aulopiform deep-sea fish (Anotopterus pharao).
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匕齿状深海鱼（Anotopterus pharao）视网膜中大神经节细胞的时间和镶嵌分布。
DOI：
10.1098/rstb.2000.0659
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
K. Kawaguchi
中科院分区：
文献类型：
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作者：
M. Uemura;H. Somiya;M. Moku;K. Kawaguchi
尖吻长尾鲨（学名：Anotopterus pharao）是一种大型的食鱼性食肉动物，生活在夜间的上层水域。在这个物种中，视网膜神经节细胞的分布已被检查。神经节细胞的等密度等高线图显示，细胞集中在颞侧视网膜的稍腹侧区域。高神经节细胞密度的区域包含4.07 × 10（3）个细胞mm（-2），并且由此产生的视力为3.5个周期度（-1）。在中央区域之外，在视网膜的颞缘中观察到明显的大神经节细胞（LGCs）。LGC排列规则，移位到内网状层。粗的树突延伸到内网状层的外部（亚层a）。在视网膜全标本中，LGC的总数为1590个（90.7cm标本），LGC的平均大小约为普通神经节细胞的4倍。LGC的形态学外观类似于猫视网膜的非典型α细胞。这些独特的LGCs的功能进行了讨论，在特定的头上喂养行为。
The daggertooth Anotopterus pharao (Aulopiformes: Anotopteridae) is a large, piscivorous predator that lives within the epipelagic zone at night. In this species, the distribution of retinal ganglion cells has been examined. An isodensity contour map of ganglion cells shows that the cells concentrate in a slightly ventral region of the temporal retina. The region of high ganglion cell density contains 4.07 x 10(3) cells mm(-2), and the resulting visual acuity is 3.5 cycles deg(-1). Outside the area centralis, conspicuously large ganglion cells (LGCs) are observed in the temporal margin of the retina. The LGCs are regularly arrayed, and displaced into the inner plexiform layer. Thick dendrites extend into the outer part (sublamina a) of the inner plexiform layer. In the retinal whole mount, the total number of LGCs is 1590 (90.7 cm specimen), and the mean size of the LGCs is about four times larger than that of the ordinary ganglion cells. The morphological appearance of the LGCs was similar to the off-type alpha cells of the cat retina. The function of these distinctive LGCs is discussed in relation to specific head-up feeding behaviour.