Organization of the antennal lobes in the praying mantis (Tenodera aridifolia)
Organization of the antennal lobes in the praying mantis (Tenodera aridifolia)
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DOI：
10.1002/cne.24159
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发表时间：
2017-05-01
影响因子：
2.5
通讯作者：
Yokohari, Fumio
中科院分区：
文献类型：
--
作者：
Carle, Thomas;Watanabe, Hidehiro;Yokohari, Fumio
昆虫的嗅觉在寻找食物和/或性伴侣方面起着关键作用。虽然许多研究都集中在非掠食性昆虫的嗅觉过程上，但对掠食性昆虫的嗅觉过程知之甚少。本文对视觉系统发达的螳螂（Tenodera aridifolia）初级嗅觉中心（触角叶）的解剖特征进行了研究。雌雄均有54个肾小球，并根据其位置和大小对每个肾小球进行鉴定。此外，我们发现位于触角神经入口的三个肾小球（大肾小球）存在性别二态性，雄性肾小球比雌性肾小球大15倍。此外，我们还通过对感觉传入的退化推断出同源类型的感觉器中嗅觉感觉神经元的靶肾小球。大肾小球接收的感觉信号来自雄性触角近端大量存在的有沟槽的钉感器。此外，我们的研究结果表明，触角叶后背部分的肾小球接收来自假定的湿敏和热敏感受器的感觉信息。还讨论了与原脑有关的投射的起源。中国生物医学工程学报，2017,25(5):1685-1706。(c) 2016 Wiley Periodicals, Inc.；
Olfaction in insects plays pivotal roles in searching for food and/or for sexual partners. Although many studies have focused on the olfactory processes of nonpredatory insect species, little is known about those in predatory insects. Here, we investigated the anatomical features of the primary olfactory center (antennal lobes) in an insect predator whose visual system is well developed, the praying mantis Tenodera aridifolia. Both sexes of T. aridifolia were found to possess 54 glomeruli, and each glomerulus was identified based on its location and size. Moreover, we found a sexual dimorphism in three glomeruli (macroglomeruli) located at the entrance of the antennal nerves, which are 15 times bigger in males than their homologs in females. We additionally deduced the target glomeruli of olfactory sensory neurons housed in cognate types of sensilla by degenerating the sensory afferents. The macroglomeruli received sensory inputs from grooved peg sensilla, which are present in a large number at the proximal part of the males' antennae. Furthermore, our findings suggest that glomeruli at the posteriodorsal part of the antennal lobes receive sensory information from putative hygro- and thermosensitive sensilla. The origins of projections connected to the protocerebrum are also discussed. J. Comp. Neurol. 525:1685-1706, 2017. (c) 2016 Wiley Periodicals, Inc.