Clyne P, Grant A, O'Connell R, Carlson J R
Department of Biology, Yale University, New Haven, CT 06520-8103, USA.
Invert Neurosci. 1997 Sep-Dec;3(2-3):127-35. doi: 10.1007/BF02480367.
We have documented odor responses of all morphological classes of sensilla on the surface of the Drosophila antenna: sensilla basiconica, sensilla trichodea, and sensilla coeloconica. Both subtypes of s. basiconica, large and small, respond to odors. S. trichodea fall into different functional types. Type 1 appears narrowly tuned, as it responded only to cis-vaccenyl acetate, believed to be a pheromone. Type 2 responded to trans-2-hexenal and 4-methyl cyclohexanol. These two types of s. trichodea are differentially distributed on the antennal surface, and have dramatically different frequencies of spontaneous action potentials. Likewise, there are multiple types of s. coeloconica. One type if broadly tuned, responding most strongly to a test stimulus of butyric acid, but also to a variety of other odors; it is restricted to the dorso-medial portion of the third antennal segment. A second type gave detectable responses only to trans-2-hexenal. These results demonstrate that all classes of sensilla are olfactory, and they reveal the organizational complexity of the Drosophila olfactory system.
锥形感器、毛形感器和腔锥形感器。锥形感器的两种亚型，即大型和小型，都对气味有反应。毛形感器分为不同的功能类型。1型似乎调谐范围狭窄，因为它仅对被认为是信息素的顺式乙酸乙烯酯有反应。2型对反式-2-己烯醛和4-甲基环己醇有反应。这两种类型的毛形感器在触角表面的分布不同，并且自发动作电位的频率也有显著差异。同样，腔锥形感器也有多种类型。一种类型调谐范围宽泛，对丁酸测试刺激反应最强，但也对多种其他气味有反应；它局限于第三触角节的背内侧部分。第二种类型仅对反式-2-己烯醛有可检测到的反应。这些结果表明，所有类型的感器都是嗅觉感器，并且揭示了果蝇嗅觉系统的组织复杂性。
