OSMOTROPOTAXIS IN DROSOPHILA-MELANOGASTER
OSMOTROPOTAXIS IN DROSOPHILA-MELANOGASTER
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DOI：
10.1007/bf00612013
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发表时间：
1982-01-01
期刊：
影响因子：
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通讯作者：
HEISENBERG, M
中科院分区：
文献类型：
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作者：
BORST, A;HEISENBERG, M
D.黑腹动物能够在开环条件下执行趋流性。在最佳刺激下，向高浓度侧的平均转向趋势对应于半径r = 0.8 cm的圆形轨迹。反应幅度在1 ~ 2 h内不下降。单侧触角切除苍蝇在一个均匀的气味领域表现出永久转向的倾向，对他们的完整的一面。正常果蝇引起嗜热性的最小浓度比在高处为6：10至9：10，在高处为2：10至5：10。气味强度降低50倍。无负向流性（即，转向较低浓度的一侧）。
D. melanogaster is able to perform osmotropotaxis under open-loop conditions. With an optimal stimulus the average turning tendency to the side of higher concentration corresponds to a circular track with radius r = 0.8 cm. The response amplitude does not decrease within 1 or 2 h. Unilaterally antennectomized flies in an homogenous odor field show a permanent turning tendency towards their intact side. The smallest concentration ratio to elicit osmotropotaxis is normal flies ranges between 6:10 and 9:10 at high and between 2:10 and 5:10 at an .apprx. 50 times lower odor intensity. No negative tropotaxis (i.e., turning to the side of lower concentration) is observed, even with strong repellents.