Toft S
Zoological Laboratory, University of Aarhus, DK-8000, Aarhus C, Denmark.
Oecologia. 1987 May;72(2):216-220. doi: 10.1007/BF00379271.
Descriptive studies reveal that web-site characteristics of two sympatric species of sheet-web spiders, Linyphia triangularis and L. tenuipalpis are similar, even though their body sizes and web sizes are significantly different. The hypothesis of identical web-sites were tested by a species exchange experiment in the field. Here the residence times of adult females of each species released in webs of the other species were compared to the residence times of other females released in own species' webs. As there was no differences between the species-exchange series and the control series, the experimental results supported the conclusions of the descriptive studies. The utility of testing habitat parameter differences experimentally, and the significance of the results to the ecology of the species, in particular to their interspecific interactions, are discussed.
描述性研究表明，两种同域分布的片网蜘蛛——三角肥腹蛛和细纹肥腹蛛，其蛛网特征相似，尽管它们的体型和蛛网大小存在显著差异。通过在野外进行的物种交换实验对蛛网相同的假说进行了检验。在此实验中，将每个物种的成年雌性蜘蛛放到另一个物种的蛛网中，然后将其停留时间与放到自身物种蛛网中的其他雌性蜘蛛的停留时间进行比较。由于物种交换系列与对照系列之间没有差异，实验结果支持了描述性研究的结论。文中还讨论了通过实验检验栖息地参数差异的实用性，以及这些结果对物种生态学，特别是对它们种间相互作用的意义。
