Scanning electron microscopy of antennal sensory organs of the cattle grub, Hypoderma lineatum (Diptera: Oestridae)
Scanning electron microscopy of antennal sensory organs of the cattle grub, Hypoderma lineatum (Diptera: Oestridae)
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DOI：
10.1007/s00436-015-4617-6
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发表时间：
2015-10-01
影响因子：
2
通讯作者：
Zhang, D.
中科院分区：
文献类型：
--
作者：
Li, X. Y.;Liu, X. H.;Zhang, D.
线斑下皮蝇（Villers, 1789）（双翅目：姬蝇科）是一种在世界范围内造成巨大经济损失的下皮蝇。采用立体显微镜和扫描电镜对牛蛴螬雌雄触须进行观察，结合触须感受器的分布、类型、大小和超微结构，揭示触须的一般形态。所有三个触角节（触角花蕊、触角柄和触角柄）表面都有微毛。机械感受器只存在于触角表面和花梗上。触角索有四种类型的触角感器：毛状、基状、锥状和棒状感器。有三个显著特征：(1)机械感受器相对细长、柔韧、等高；(2)触角蒂增大，触角上有大量的感觉窝和感觉窝；(3)各类型触角感觉器分别聚集在感觉坑中。此外，触角蒂的扩大和丰富的感觉窝和感觉窝可能有助于气味检测，提高嗅觉的灵敏度和准确性，并保护脆弱的触角感觉器免受机械刺激或损伤。
Hypoderma lineatum (Villers, 1789) (Diptera: Oestridae) is a hypodermosis fly that has resulted in great economic losses worldwide. The antennae of cattle grub males and females were examined through stereoscopic microscopy and scanning electron microscopy to reveal the general morphology, combined with distribution, type, size, and ultrastructure of the antennal sensilla. All of the three antennal segments (antennal scape, pedicel, and funiculus) possess microtrichiae on their surface. Mechanoreceptors only exist on the antennal scape and pedicel. The antennal funiculus presents four types of antennal sensilla: trichoid, basiconic, coeloconic, and clavate sensilla. Three distinctive characters of H. lineatum are obvious: (1) the relatively slender, flexible, and equal-height mechanoreceptors; (2) the enlarged antennal pedicel, and numerous antennal sensory pits and pit sensilla on the antennal funiculus; and (3) all types of antennal sensilla clustered in sensory pits, respectively. Additionally, the enlarged antennal pedicel and abundant sensory pits and pit sensilla might facilitate odor detection, enhance olfactory sensitivity and accuracy, and also protect the fragile antennal sensilla from mechanical irritation or damage.