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首页> 外文期刊>Herpetologica >The role of airborne and substrate cues from non-envenomated mice during rattlesnake (Crotalus oreganus) post-strike trailing
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The role of airborne and substrate cues from non-envenomated mice during rattlesnake (Crotalus oreganus) post-strike trailing

机译：响尾蛇尾随响尾蛇（Crotalus oreganus）在未毒鼠的空中和底物提示中的作用

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Rattlesnakes are highly adept at following substrate chemosensory trails left by struck (envenomated) prey. However, there are other sources of chemical information that may be present in the post-strike environment, such as odors from unstruck mice, that could either confound or aid predatory success. Rattlesnakes can follow airborne chemosensory trails of a struck prey, but the ability of rattlesnake to use airborne chemosensory cues of unstruck prey has not been examined. Therefore, our purpose was to examine the abilities of rattlesnakes to locate prey rising substrate and airborne cues from unstruck mice and compare this,with their success with airborne odors from struck mice. We used a Plexiglas Y-maze through which paired airborne and/or substrate odor choices were presented to northern Pacific rattlesnakes (Crotalus oreganus). In one treatment, snakes given a choice of odor from an unstruck mouse (substrate) versus a control (unscented air) showed a significant preference for the unstruck, substrate odor trail. In a second treatment, snakes given a choice of unstruck mouse odor (airborne) versus a control (unscented air) showed no significant preference for the airborne odor. In a third treatment, snakes given a choice of unstruck mouse (airborne) versus struck mouse odor (airborne) again showed no preference for either odor. This last result suggests that one cue used during airborne trailing is a general chemical cue and is most likely not associated with a distinct post-strike searching image (as is the case in substrate trailing). Snakes also exhibited certain behaviors within the maze (i.e., turning behavior, emergences) more often when exposed to airborne cues than when exposed to substrate cues. These observations indicate that a different system of behaviors is used when rattlesnakes follow airborne compared to substrate odor cues during post-strike trailing.
机译：响尾蛇非常善于追踪被击打（毒化）的猎物留下的底物化学感应轨迹。但是，在罢工后的环境中可能还存在其他化学信息来源，例如未受打击的老鼠发出的气味可能会混淆或帮助掠夺性成功。响尾蛇可以追随被袭猎物的空中化学感官踪迹，但是响尾蛇使用未受袭猎物的空中化学感官线索的能力尚未得到检验。因此，我们的目的是检查响尾蛇定位未受打击的老鼠的猎物上升的底物和空气线索的能力，并将其与受打击的老鼠的航空气味进行比较。我们使用了Plexiglas Y迷宫，通过该迷宫，可以将成对的空气传播和/或基质气味选择呈现给北太平洋响尾蛇（Crotalus oreganus）。在一种处理中，从未敲打的老鼠（基质）到对照（在无味的空气）中选择了气味的蛇表现出对未敲打的基质气味痕迹的显着偏好。在第二种治疗方法中，选择了未散发老鼠气味（空气传播）和对照（未闻空气）的蛇对空气传播气味没有明显的偏爱。在第三种处理中，选择了未击打小鼠（空气传播）和被击打小鼠气味（空气传播）的蛇再次对这两种气味都没有偏爱。最后的结果表明，机载尾随过程中使用的一个提示是一般的化学提示，并且很可能与不同的打击后搜索图像无关（就像底物尾随的情况一样）。当暴露于空中线索时，蛇还比暴露于基质线索时更频繁地在迷宫内表现出某些行为（即，转弯行为，出现）。这些观察结果表明，与响尾随行期间的底物气味提示相比，响尾蛇跟随空中传播时使用了不同的行为系统。

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