Photoperiodic time measurement in a russian strain of the spider mite, Tetranychus urticae
Photoperiodic time measurement in a russian strain of the spider mite, Tetranychus urticae
复制标题
俄罗斯二斑叶螨品系的光周期时间测量
DOI：
10.1016/0022-1910(87)90067-9
复制
发表时间：
1987
影响因子：
2.2
通讯作者：
A. Veerman
中科院分区：
文献类型：
--
作者：
M. Nunes;A. Veerman
对俄罗斯一株荨麻疹叶螨进行了光周期时间测量。除了正常的光周期响应曲线外，还确定了一系列对称“骨架”光周期、一系列破光实验（不对称“骨架”光周期）和一个共振实验的响应。在所有实验中，发现反应不同于先前在荷兰菌株ofT的相同实验中获得的反应。测定了。尽管在两种地理菌株之间观察到许多差异，但获得的俄罗斯菌株螨的数据可以用“沙漏定时器-振荡器计数器”模型完全解释，这是一个理论模型，用于解释荷兰菌株的蜘蛛螨的光周期诱导滞育。根据该模型，两种螨的光周期响应差异完全归因于沙漏计时器的光动力学差异，沙漏计时器被认为是测量这些螨的光周期时间；两种螨株的黑暗动力学似乎非常相似。结果表明，光周期机制在种内具有很大的变异性。测定了;然而，模型解释表明，即使响应曲线上的显著差异也不一定表明潜在的时序机制存在本质差异。
Photoperiodic time measurement was studied in a Russian strain of the spider miteTetranychus uriticae. Apart from the normal photoperiodic response curve responses were determined for a series of symmetrical ‘skeleton’ photoperiods, a series of light-break experiments (asymmetrical ‘skeleton’ photoperiods), and a resonance experiment. In all experiments the responses were found to differ from those previously obtained in identical experiments with a Dutch strain ofT. urticae. In spite of the many differences observed between both geographic strains, the data obtained for the Russian strain of mites could be fully explained by the ‘hourglass timer-oscillator counter’ model, a theoretical model developed to explain photoperiodic induction of diapause in the Dutch strain of the spider mite. According to the model the differences in the photoperiodic responses of both strains of mites were entirely attributable to differences in the light-kinetics of the hourglass timer which is assumed to measure photoperiodic time in these mites; dark-kinetics appeared to be very similar in both mite strains. The results demonstrate the great intraspecific variability in the photoperiodic mechanism ofT. urticae; the model interpretation shows, however, that even marked differences in response curves do not necessarily indicate the existence of essential differences in the underlying timing mechanism.