HYGRORECEPTOR MECHANISM IN ANTENNA OF COCKROACH PERIPLANETA
HYGRORECEPTOR MECHANISM IN ANTENNA OF COCKROACH PERIPLANETA
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DOI：
10.1007/bf00656391
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发表时间：
1978-01-01
期刊：
影响因子：
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通讯作者：
YOKOHARI, F
中科院分区：
文献类型：
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作者：
YOKOHARI, F
美洲大蠊（P. americana L.）进行了电生理学研究。存在两种拮抗类型; 1种响应于水分，另一种响应于干燥。湿感受器对液态水的输出模式几乎与100% r.h. [相对湿度]刺激。它不像双翅目昆虫的标签水受体那样被CaCl 2溶液抑制。水的局部应用表明，被外壁保护的感觉干可能是其特异的感受区。甘油可抑制湿感受器，而刺激干感受器，这些作用与甘油引起的轻度脱水一致。潮湿和干燥的感受器类型响应感器的机械变形，但拮抗。3种化学驱避剂[邻苯二甲酸二甲酯、2-乙基-1，3-己二烯醇和N，N-二乙基-间甲苯酰胺]均不影响大蠊的湿感受器和干感受器。蟑螂的吸湿感受器显然通过相对湿度引起的吸湿组分的机械应变将湿度变化转化为电势。
Antennal hygroreceptors of the cockroach, P. americana L., were investigated electrophysiologically. Two antagonistic types were present; 1 responded to moisture, the other to dryness. The moist receptor responded to liquid water with an output pattern almost identical to that evoked by 100% r.h. [relative humidity] stimulation. It is not inhibited by CaCl2 solutions as are dipteran labellar water receptors. Local applications of water show that the sensillar stem guarded by the outer wall may be its specific receptive region. The moist receptor is inhibited by glycerine whereas the dry receptor is excited by it. These effects are consistent with the mild dehydration caused by this substance. Moist and dry receptor types respond to mechanical deformation of the sensillum, but antagonistically. Neither the moist nor dry receptors of Periplaneta are affected by 3 chemical repellents [dimethyl phthalate, 2-ethyl-1,3-hexadienol and N,N-diethyl-m-toluamide] reported to inhibit the moist receptor of the mosquito. Cockroach hygroreceptors apparently transduce humidity changes to electrical potentials through mechanical strains induced in hygroscopic components by relative humidity.