作者: Klaus Rohde
DOI: 10.1007/978-94-011-2775-2_44
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摘要: Three types of flame bulbs are distinguished in the Platyhelminthes: type 1 has two cilia arising from a terminal cell and rootlets extending along weir; 2 many proximal canal closely aligned with it; 3 non-terminal perikaryon forming bulbs, each single row longitudinal ribs. Each appears various structural forms. Type is found Catenulida; Macrostomida, Polycladida, Prolecithophora, Proseriata, Tricladida, Fecampiidae, Neodermata; Rhabdocoela Lecithoepitheliata. The most likely evolutionary sequence that derived and, perhaps, 1. Characters protonephridia show Neodermata form separate phylogenetic lineages; other similarities between these taxa due to convergent evolution (or horizontal gene transfer?).