Analysis of the fixed direction of a silkworm body during cocoon construction
Analysis of the fixed direction of a silkworm body during cocoon construction
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结茧过程中蚕体的固定方向分析
DOI：
10.11416/kontyushigen1930.69.207
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Nakazawa
中科院分区：
文献类型：
--
作者：
M. Miura;H. Morikawa;Tatsuya Shimizu;S. Mochizuki;Takashi Kojima;M. Iwasa;M. Nakazawa
本文研究了家蚕在吐丝过程中，蚕体后部与丝骨架的位置和方向的变化。从立茧期到结茧期，对蚕体的位置和方向进行了测量，并研究了它们的连续变化。结果表明，蚕体定着位置的变化具有滞后9的准周期性，定着方向随着吐丝区的缩小而逐渐集中在吐丝区长轴的同心圆上。结果还表明，家蚕以平均每秒4次的速度改变身体后部的方向。
We considered the variation of the position of the hind parts of the body and its direction fixed to the silk framework when a silkworm spun a cocoon. The positions and directions of a silkworm body were measured from the footing stage to the cocoon construction and their serial change was investigated. The result indicated that there was a quasi periodicity with lag 9 for the change of the fixed position and that the fixed direction of the silkworm body gradually gathered in a concentric configuration around the major axis of the spun region with the decrease in size of the region. It also showed that the silkworm changed the direction of the hind parts of the body at a rate of 4 per second on average.