The role of antennal sensory cues in female responses to courting males in the cricket Teleogryllus oceanicus
The role of antennal sensory cues in female responses to courting males in the cricket Teleogryllus oceanicus
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发表时间：
1997
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通讯作者：
Balakrishnan;Pollack
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作者：
Balakrishnan;Pollack
求爱通信领域的蟋蟀Teleogryllus oceanicus是多模态的，涉及最低限度的声学和化学线索。声音信号，或求爱歌，是必要的，以引起正常水平的女性安装的男性在求爱期间。雌性输入也是至关重要的，因为触角切除的女性显示高度降低安装水平。固定化的花葶花梗和花梗鞭毛关节的女性触角安装的概率没有影响，这表明，从弦音器官在天线的基部的mechanosensory输入是没有必要的。触角鞭毛是一个多功能的感觉器官，其中包括机械感受器和化学感受器。为了剖析不同鞭毛形态的作用，我们用硫酸锌处理触角。这抑制了一个很好的特点接触化学感觉的行为，开始求爱的男性，并消除了电生理检测的响应最chemosensory头发。硫酸锌处理对触觉触角反射没有影响，表明它选择性地沉默化学感受器。处理的天线与硫酸锌降低安装水平几乎一样多的触角切除术，这表明安装反应所需的主要触角线索是化学感觉，而不是mechanosensory，在性质上。
Courtship communication in the field cricket Teleogryllus oceanicus is multimodal, involving a minimum of both acoustic and chemical cues. The acoustic signal, or courtship song, is necessary to elicit normal levels of female mounting of the male during courtship. Antennal input is also crucial since antennectomized females show highly reduced levels of mounting. Immobilization of the scapepedicel and pedicelflagellum joints of female antennae had no effect on mounting probability, suggesting that mechanosensory input from chordotonal organs at the base of the antenna is not necessary. The antennal flagellum is a multimodal sensory organ, which contains both mechanoreceptors and chemoreceptors. In order to dissect the roles of different flagellar modalities, we treated antennae with zinc sulphate. This suppressed a well-characterized contact-chemosensory behaviour, initiation of courtship by males, and eliminated responsiveness of most chemosensory hairs as assayed electrophysiologically. Zinc sulphate treatment had no effect on a tactile antennal reflex, indicating that it selectively silenced chemoreceptors. Treatment of antennae with zinc sulphate reduced mounting levels nearly as much as antennectomy, suggesting that the main antennal cue required for the mounting responses is chemosensory, rather than mechanosensory, in nature.