Age and Sex-Based Differences in the Use of Prey Sensory Cues in Wolf Spiders (Araneae: Lycosidae)
Age and Sex-Based Differences in the Use of Prey Sensory Cues in Wolf Spiders (Araneae: Lycosidae)
复制标题
狼蛛（蜘蛛目：狼蛛科）使用猎物感官线索的年龄和性别差异
作者：
M. Persons;G. Uetz
研究了成年和幼年狼蛛（Schizocosa rovneri; Lycosidae）雄性和雌性狼蛛在感官线索介导下觅食模式的差异。测定了31只蜘蛛在人工觅食斑块中幼蛛和成蛛的斑块停留时间。由活猎物（蟋蟀）提供的感官信息的斑块变化如下：单独的视觉刺激；单独的振动刺激；视觉和振动刺激一起；对照组（没有刺激）。蜘蛛在斑块之间移动了一个小时，但不能进食。成虫主要使用视觉信息来确定斑块停留时间，但幼虫也使用振动线索。在感官线索使用上的显著年龄和性别差异表明，观察到的不同觅食策略部分是由于在猎物检测中使用不同的感知线索。
Differences in foraging patterns mediated by sensory cues were examined between adult and juvenile male and female wolf spiders (Schizocosa rovneri; Lycosidae). Patch residence time for thirty-one spiders were tested among juveniles and adults in artificial foraging patches. Patches varied in sensory information provided by live prey (crickets) as follows: visual stimuli alone; vibratory stimuli alone; visual and vibratory stimuli together; and control (no stimuli). Spiders moved between patches for one hour, but could not feed. Adult Schizocosa rovneri use primarily visual information to determine patch residence time, but juveniles use vibratory cues as well. Significant age and sex-based differences in the use of sensory cues suggest that observed divergent foraging strategies are partly due to the use of different perceptual cues in prey detection.