Local light stimulation of melanophores of a teleost, Zacco temmincki.
Local light stimulation of melanophores of a teleost, Zacco temmincki.
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硬骨鱼 Zacco temmincki 黑色素细胞的局部光刺激。
DOI：
10.1002/jez.1402380311
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
I. Takabatake
中科院分区：
文献类型：
--
作者：
T. Iga;I. Takabatake
黑色素细胞的硬骨鱼，Zaghtemmincki，本地光刺激的反应进行了检查，在制备隔离的鳞片。黑素细胞诱导黑素体在黑暗中聚集，在光照下分散。对处于黑素体分散状态的黑素细胞进行局部照射仅抑制受刺激区域中黑素体的向心迁移。局部照明的色素无分支的黑素细胞与聚集的黑素体通常带来的色素分散到受刺激的区域。然而，当该区域距离中央黑素小体块的边缘有很大距离时，黑素小体从未迁移到照射区域。局部照明的中心球的细胞抑制黑素体的完全聚集在分散和聚集状态。抑制的程度取决于照射区域的大小。结果表明，光感受位点分布在整个细胞，黑素体的运动是在一个非常精确的方式局部调节。
Responses of melanophores of the teleost, Zacco temmincki, to local light stimulation were examined in preparations of isolated scales. The melanophores induced the aggregation of melanosomes in darkness and their dispersion in light. Local illumination of a melanophore in the melanosome-dispersed state inhibited centripetal migration of melanosomes only in the stimulated area. Local illumination of a pigment-free branch of a melanophore with aggregated melanosomes generally brought about pigment dispersion into the stimulated area. However, when that area was at a significant distance from the edge of the central melanosome mass, the melanosomes never migrated into the irradiated area. Local illumination of the centrosphere of a cell inhibited the full aggregation of melanosomes in the dispersed and aggregated state. The degree of the inhibition depended on the size of the irradiated area. The results suggest that photoreceptive sites are distributed over the whole of a cell, and that the movements of melanosomes are regulated locally in a very precise manner.