Singla C L
Cell Tissue Res. 1978 Apr 17;188(2):317-27. doi: 10.1007/BF00222640.
Aglantha digitale swims in two ways: a slow rhythmical swim typical of hydromedusae in general and a sudden rapid movement that appears to be an escape response. The swimming musculature is an extremely well developed striated circular muscle layer that possesses a sarcoplasmic reticulum. The nervous system of this species can be divided into three units: an inner nerve ring and an outer nerve ring, which are joined by unusually large transmesogleal pathways, a group of giant axons that extends over the surface of the swimming muscle, and the radial canal. Well developed ciliated sensory cells are located on the exumbrellar surface of the margin. Consideration of these properties of the organisation of this species suggests that normal slow swimming is controlled by a mechanism similar to that found in other medusae, while the escape response is the result of the action of the giant axons.
一种是一般水螅水母类典型的缓慢有节奏游动，另一种是突然的快速移动，这似乎是一种逃避反应。其游泳肌肉组织是一层极其发达的横纹环形肌层，拥有肌浆网。该物种的神经系统可分为三个单元：一个内环神经和一个外环神经，它们通过异常大的跨中胶层通道相连；一组延伸至游泳肌表面的巨大轴突；以及辐射管。发育良好的纤毛感觉细胞位于伞缘的伞上表面。对该物种这些组织特性的研究表明，正常的缓慢游动由一种与其他水母中发现的机制类似的机制控制，而逃避反应则是巨大轴突作用的结果。
