Fine-structural characteristics of the antennal sensilla of Agrotis segetum (Insecta: Lepidoptera)
Fine-structural characteristics of the antennal sensilla of Agrotis segetum (Insecta: Lepidoptera)
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DOI：
10.1007/bf00210105
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发表时间：
2004
影响因子：
3.6
通讯作者：
E. Hallberg
中科院分区：
文献类型：
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作者：
E. Hallberg
萝卜小地老虎（Agrotis segetum）有7种不同类型的感器：4种单壁感器（SW）、1种双壁感器（DW）、1种端孔感器（TP）和1种无孔感器（NP），SW 1和SW 2感器的外观相同，都是细长的，但其感器的分枝方式不同，SW 1和SW 2感器分别为不分枝感器和分枝感器。SW 3感器较短，镰刀形，并含有大量来自感觉突起的分支。这三种感觉器类型由2-3个感觉细胞支配。SW 4感器呈葡萄干状，具有3个分支丰富的感觉突起。DW感器短，顶端具狭缝状气孔。这种感觉器类型有5-6个感觉突起。TP感器有5个感觉突起，其中一个突起基部终止于管状体，其他突起终止于长表皮刚毛的顶端。NP感受器粗壮，顶端锥形。两个感觉过程终止于顶端部分，第三近端。第三感觉突呈层状结构。精细结构表明以下功能：SW和DW感器：化学感受; TP感器：化学感受和机械感受; NP感器：温度感受和湿度感受。
The turnip mothAgrotis segetumpossesses seven different types of sensilla: four single-walled (SW), one double-walled (DW), one terminal-pore (TP), and one poreless sensilla (NP).The SW 1 and SW 2 sensilla have the same external appearance, being long and slender, but differ in the branching pattern of the sensory processes: unbranched and branched in SW 1 and SW 2, respectively. The SW 3 sensilla are shorter, sickle-shaped, and contain a large number of branches from the sensory processes. These three sensillar types are innervated by 2–3 sensory cells. The SW 4 sensilla are raisin-shaped and possess three profusely branched sensory processes. The DW sensilla are short and have apical slit-like pores. This sensillar type has 5–6 sensory processes. The TP sensilla possess five sensory processes, one of them terminates basally in a tubular body, the others in the apical part of the long cuticular bristle. The NP sensilla are stout and have apical conelike structures. Two of the sensory processes terminate in the apical part, the third proximally. The third sensory process has a lamellar pattern. The fine structure indicates the following functions: SW and DW sensilla: chemoreception; TP sensillum: chemoreception and mechanoreception; NP sensillum: thermoreception and hygroreception.