中国对虾体表感觉毛结构和功能的研究 Ⅰ.头胸部附肢上感觉毛的形态和分布

STRUCTURE AND FUNCTION OF CUTICULAR SENSILLAE OF PENAEUS CHINENSIS1. MORPHOLOGY AND DISTRIBUTION OF CUTICULAR SENSILLAE ON THE CEPHALOTHORACIC APPENDAGES

利用解剖镜和扫描电镜观察了中国对虾头胸部附肢上各种体表感觉毛的外部形态以及它们的分布模式。根据感觉毛的外部形态可将其分为嗅毛(aesthetasc hair)、锥状刚毛(cuspidate seta)、简单光滑刚毛(simple seta)、鳞状刚毛(squamous seta)、锯状刚毛(serrate seta)、细齿状刚毛(serrulate seta)、羽状刚毛(plumose seta)、轮生羽状刚毛(pappose seta)、CAP 器官(CAP organs)、齿状刚毛(tooth-shaped seta)、栓状毛(peg sensilla)等11种类型。本文还分析了体表感觉毛的形态和分布与功能之间的相互关系。

This article is the first paper deals with the structure and function of cuticular sensillae of Penaeus chinensis. The morphology of the setae on the antennules, antennae, mandibles, maxillules, maxillipeds and pereiopods was analyzed using both light and scanning electron microscopy(SEM). Light microscopy was used to observe the distribution and the gross structure of different types of setae on the various appendages. Examinations with SEM provided a more detailed description of their structure.Sensilla on the appendages can be classified morphologically and physiologically. There are about eleven types of cuticular sensilla on the appendages of Penaeus chinensis which arrang as follows:1. Aesthatasc hairs (AE), chemoreceptive.2. Cuspidate setae (CU), probably chemoreceptive.3. Simple setae (SI), probably chemoreceptive.4. Squamous setae (SQ), chemoreceptive and mechanoreceptive.5. Serrate setae (SE), mainly mechanoreceptive, and used for grooming.6. Serrulate setae (SUS), including triserrulate setae (TRS), chemoreceptive and mechanore-ceptive; tetraserrulate setae (TES), chemoreceptive and mechanoreceptive; ploy-serrulate setae (PS), mainly mechanoreceptive, and used for grooming.7. Plumose setae (PL), mechanoreceptive, and used for swimming.8. Pappose setae (PA), mechanoreceptive, probably also used for grooming.9. CAP organs (CAP), mechanoreceptive.10. Tooth-shaped setae (TS), chemoreceptive and mechanoreceptive.11. Peg sensilla (PE), mechanoreceptive.