Anderson Peter A V, Thompson Louise F, Moneypenny Craig G
Whitney Laboratory for Marine Bioscience and Department of Physiology and Functional Genomics, University of Florida, St. Augustine, FL 32080, USA.
Biol Bull. 2004 Oct;207(2):141-6. doi: 10.2307/1543588.
Tentacles from representatives of all four classes of the phylum Cnidaria were examined using antibodies against the neuropeptides FMRFamide and RFamide to reveal the organization of neurons and nerve nets associated with cnidocytes. The tentacles of all species examined contained FMRFamide- or RFamide-immunoreactive neurons, in varying densities. In representatives from the Scyphozoa, Hydrozoa, and Cubozoa, the FMRFamide-immunoreactive neurons formed plexuses at the base of the cnidocyte assemblages; in anthozoans, the absence of discrete assemblies of cnidocytes precluded visual co-localization of cnidocytes and immunoreactive neurons. In all four classes, immunoreactive sensory cells connected these peptidergic nerve nets to the surface of the tentacle. These findings suggest that members of all four cnidarian classes share a common organizational pattern, and it is proposed that this peptidergic innervation may be involved in the chemosensory regulation of cnidocyte discharge.
利用抗神经肽FMRF酰胺和RF酰胺的抗体，对刺胞动物门所有四个纲的代表动物的触手进行了检查，以揭示与刺细胞相关的神经元和神经网的组织结构。所有被检查物种的触手都含有不同密度的FMRF酰胺或RF酰胺免疫反应性神经元。在钵水母纲、水螅纲和立方水母纲的代表动物中，FMRF酰胺免疫反应性神经元在刺细胞集合体的基部形成神经丛；在珊瑚纲动物中，由于不存在离散的刺细胞集合体，因此无法直观地确定刺细胞与免疫反应性神经元的共定位。在所有四个纲中，免疫反应性感觉细胞将这些肽能神经网与触手表面相连。这些发现表明，刺胞动物门所有四个纲的成员都具有共同的组织模式，并且有人提出这种肽能神经支配可能参与刺细胞放电的化学感觉调节。
