Goldberg W M, Grange K R, Taylor G T, Zuniga A L
Biol Bull. 1990 Aug;179(1):96-104. doi: 10.2307/1541743.
Normal tentacles on polyps of the black coral Antipathes fiordensis are less than 2 mm long and display well-defined, wart-like structures, the centers of which are marked by both flagella and microvilli. Both of these microappendages are characteristic of spirocytes, the dominant type of cnidocyte in normal tentacles. Sweeper tentacles, up to 15 mm long, form in apparent response to an alcyonacean epibiont. The external surface of the sweeper tentacle lacks the well-defined, wart-like batteries of the normal tentacle, and exhibits a general reduction in the appearance of surface microappendages. Nonetheless, there is a greater number of cnidae per unit area. No spirocysts are found in these sweeper tentacles. Instead, the cnidom is composed entirely of microbasic b-mastigophores (MbMs). More than 99% of these are of a single type that are structurally different from the MbMs found as a minority of the cnidae in normal tentacles. Changes in sweeper tentacle cnidae are compared with those occurring in modified tentacles of other anthozoans.
黑珊瑚Fiordensis antipathes息肉上的正常触手长度小于2毫米，呈现出界限分明的疣状结构，其中心有鞭毛和微绒毛。这两种微附属物都是螺旋细胞的特征，螺旋细胞是正常触手中主要的刺细胞类型。清扫触手长达15毫米，显然是对一种软珊瑚外共生体的反应而形成。清扫触手的外表面缺乏正常触手那种界限分明的疣状刺丝囊群，表面微附属物的外观普遍减少。尽管如此，单位面积内的刺细胞数量更多。在这些清扫触手中未发现螺旋囊。相反，刺胞囊完全由微基b型鞭毛细胞（MbMs）组成。其中超过99%是单一类型，在结构上与正常触手中作为少数刺细胞的MbMs不同。将清扫触手刺细胞的变化与其他珊瑚虫纲动物变形触手的变化进行了比较。
