Walker SE, Marshall SD, Rypstra AL, Taylor DH
Department of Zoology, Miami University, Oxford
Anim Behav. 1999 Sep;58(3):515-520. doi: 10.1006/anbe.1999.1180.
We compared the influence of recent feeding history on locomotory behaviour in two species of wolf spiders, Hogna helluo (Walckenaer) and Pardosa milvina Hentz, in the laboratory. Both species are cursorial hunters. We maintained the spiders in the laboratory on satiation and stringent feeding regimes and measured their locomotory activity levels for 1 h using a digital activity recording device. We subjected H. helluo to either ad libitum feeding for 14 days or no food for 14 days. We subjected P. milvina to ad libitum feeding or fasting treatments for 7 and 14 days. We found that H. helluo showed a shift in locomotory activity depending on feeding regime, whereas P. milvina did not. Food-limited H. helluo travelled further than satiated H. helluo, and did so by moving more frequently. Pardosa milvina was in general much more active than H. helluo. We propose that P. milvina is an active forager compared with the sit-and-wait strategy of H. helluo. This difference in foraging strategy is correlated with differences in body size and habitat use. Copyright 1999 The Association for the Study of Animal Behaviour.
在实验室中，我们比较了近期摄食历史对两种狼蛛——食鸟狼蛛（Hogna helluo，瓦尔克纳命名）和米尔维纳豹蛛（Pardosa milvina，亨茨命名）运动行为的影响。这两个物种都是奔跑型猎手。我们在实验室中分别按照饱食和严格节食的方式饲养这些蜘蛛，并使用数字活动记录设备测量它们1小时的运动活动水平。我们让食鸟狼蛛自由进食14天或禁食14天。对于米尔维纳豹蛛，我们对其进行了7天和14天的自由进食或禁食处理。我们发现，食鸟狼蛛的运动活动会根据摄食方式发生变化，而米尔维纳豹蛛则不会。食物受限的食鸟狼蛛比饱食的食鸟狼蛛移动得更远，且移动频率更高。总体而言，米尔维纳豹蛛比食鸟狼蛛活跃得多。我们认为，与食鸟狼蛛的坐等策略相比，米尔维纳豹蛛是一种主动觅食者。这种觅食策略的差异与体型和栖息地利用的差异相关。版权所有1999年动物行为研究协会。
