[The quill mite Syringophilopsis fringilla (Fritsch) (Acari: Trombidiformes: Syringophilidae): The structure of receptor organs providing feeding of the parasite inside the feather quill].

Parazitologiia Pub Date : 2017-03-01
S A Leonovich, S A Filimonova
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Abstract

The structure of sensory organs situated on palps and inside the cheliceral stylet of the quill mite Sringophilopsis fringilla (Fritsch, 1958) was examined in scanning and transmitting electron microscopes. Eight sensilla of 3 types were revealed on palptarsus, including two contact chemo-mechanosensory sensilla, a single distant chemosensory (probably olfactory) sensillum, and 5 tactile mechanosensitive sensilla. All other sensilla situated on basas parts of the palp and on the outer surface of gnathosoma are represented by tactile mechanoreceptors. A proprioceptor sensillum was revealed in the movable digit of the chelicera; modified cilia of dendrites of 5 sensory neurons run in the inner non-sclerotized core of the stylet, ending at different levels as electron-dense rods connected with the sclerotized wall of the stylet. The authors assume that the proprioceptor sensillum of the stylet detects the pressing force of the movable digit on the inner wall of the quill during piercing process, while papal sensilla determine the optimal place for piercing.

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[毛羽螨(英语:Syringophilopsis fringilla (Fritsch))(蜱螨亚纲:恙螨目:嗜毛羽螨科):在毛羽内为寄生虫提供食物的受体器官的结构]。
用扫描电镜和透射电镜研究了毛羽螨(Sringophilopsis fringilla, 1958)触目和化学花柱内感觉器官的结构。触须上共有3种类型的8个感受器,包括2个接触化学-机械感觉感受器,1个远处化学-机械感觉感受器(可能是嗅觉感受器)和5个触觉机械敏感感受器。所有其他位于触须基部和齿状体外表面的感受器都由触觉机械感受器代表。睫状体活动趾上可见本体感受器;5个感觉神经元树突的修饰纤毛在茎柱内部未硬化的核心中运行,末端不同水平,形成与茎柱硬化壁相连的电子致密棒。作者认为,在刺穿过程中,柱头本体感受器检测活动手指对羽毛内壁的压迫力,而教皇感受器确定最佳刺穿位置。
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