Nentwig Wolfgang
Fachbereich Biologie, Universität/Lahnberge, D-3550, Marburg/Lahn, Germany.
Oecologia. 1980 May;45(2):236-243. doi: 10.1007/BF00346464.
1769 prey animals were collected from the space webs of linyphiid-like spiders, i.e. actual prey, and were compared with more than 110,000 animals from nearby pitfall traps and colored traps (yellow), i.e. potential prey, by means of the Ivlev Index. The catch found in the webs proved to be very selective: certain groups were found in unexpectedly great numbers (especially phytophages insects) while others had nearly always managed to avoid the web (especially predators and pollinating insects). The spider had conducted a further selection in that it consumed only certain animals. The parameters which decide the frequency of capture and of consumption are as follows: flying ability, sense of direction, body type, size, weight and abundance.
从类球蛛科蜘蛛的蛛网中收集了1769只被捕食动物，即实际猎物，并通过伊夫列夫指数，将其与来自附近陷阱（陷阱和黄色诱捕器）的110,000多只动物，即潜在猎物进行比较。结果表明，蛛网中的捕获物具有很强的选择性：某些类群的数量出乎意料地多（尤其是植食性昆虫），而其他类群几乎总能避开蛛网（尤其是捕食性昆虫和传粉昆虫）。蜘蛛还进行了进一步的筛选，因为它只捕食某些动物。决定捕获频率和消耗频率的参数如下：飞行能力、方向感、体型、大小、重量和数量。
