Nentwig Wolfgang
Fachbereich Biologie, Philipps-Universität, Lahnberge, D-3550, Marburg, Federal Republic of Germany.
Oecologia. 1982 Oct;55(1):130-136. doi: 10.1007/BF00386728.
In an analysis of 67 pitfall trap studies in different environments a positive correlation is found between the abundance of spiders and their potential prey, individual main prey groups and individual predator groups. The body-size of spiders and potential prey is significantly correlated both during the day in one locality and between five different localities. Spiders match the size spectrum of their potential prey by an almost equally broad spectrum, whilst the size spectrum of other predator groups is narrower. Therefore, in all size classes spiders exercise optimal predator pressure upon their potential prey. It is suggested that there may be a significant role for spiders as a multi-predator complex in reducing a multi-prey complex.
在对不同环境下的67项陷阱诱捕研究进行分析时发现，蜘蛛的数量与其潜在猎物、单个主要猎物群体和单个捕食者群体之间存在正相关关系。在一个地点的白天以及五个不同地点之间，蜘蛛和潜在猎物的体型都存在显著相关性。蜘蛛通过几乎同样广泛的体型谱来匹配其潜在猎物的体型谱，而其他捕食者群体的体型谱则较窄。因此，在所有体型类别中，蜘蛛对其潜在猎物施加了最佳的捕食压力。研究表明，蜘蛛作为一个多捕食者复合体，在减少多猎物复合体方面可能发挥着重要作用。
