Tsagkarakou A, Navajas M, Lagnel J, Pasteur N
Laboratoire de Zoologie, INRA, 2, Place P. Viala, 34060 Montpellier, France.
Heredity (Edinb). 1997 Jan;78(Pt 1):84-92. doi: 10.1038/sj.hdy.6881050.
The polymorphism of four isozymes was studied on single females of Tetranychus urticae from Crete (Greece), using an isoelectric focusing technique. Genetic differentiation was found to be correlated with distance but not with the species of colonized host-plants. Thus no differentiation was observed between samples collected on citrus trees, tomato, pumpkin, okra or weed plants located within a 50 m(2) area, showing that at this geographical scale T. urticae populations are panmictic. In contrast, samples from plants at 150 m or more from one another displayed a significant genetic differentiation. These results are discussed in relation to the known pattern of migration in the species.
利用等电聚焦技术，对来自希腊克里特岛的单头二斑叶螨雌螨的四种同工酶多态性进行了研究。发现遗传分化与距离相关，而与被定殖寄主植物的种类无关。因此，在50平方米区域内的柑橘树、番茄、南瓜、秋葵或杂草植物上采集的样本之间未观察到分化，表明在此地理尺度上二斑叶螨种群是随机交配的。相比之下，来自彼此距离150米或更远植物上的样本显示出显著的遗传分化。结合该物种已知的迁移模式对这些结果进行了讨论。
