Ultrastructural studies of dorsal ciliated organs in Spionidae (Annelida: Polychaeta)
Ultrastructural studies of dorsal ciliated organs in Spionidae (Annelida: Polychaeta)
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DOI：
10.1023/a:1026105200983
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发表时间：
2003-04-01
期刊：
影响因子：
2.6
通讯作者：
Jelsing, J
中科院分区：
文献类型：
--
作者：
Jelsing, J
通过扫描和透射电子显微镜研究了 15 种 Spionidae 物种的背侧纤毛器官 (dco) 的分布和结构成分。根据 dco 的分布模式，所研究的物种被分为四个非系统类群：（I）成对的前部 dco，（II）成对的前部 dco 向后延伸，（III）成对的前部 dco 与不成对的、性二态性、同色异质的 dco 组合，以及（IV）成对的前部 dco 与成对的同色异质 dco 组合。以前的超微结构研究仅包括具有 I 组和 III 组器官的物种。在本研究中，在Laonice bahusiensis 和Spio cf. 中发现了dco 的超微结构。研究了 filicornis（具有 II 组和 IV 组 dco 的物种），试图考虑它们的同源性。除了第 III 组的同色异质 dco 之外，dco 细胞成分的相似性表明与颈部器官的同源性。
The distribution and structural components of dorsal ciliated organs (dco) in 15 species of the Spionidae were studied by scanning- and transmission electron microscopy. Based on the distribution patterns of dco, the investigated species are divided into four non-systematic groups: ( I) paired anterior dco, (II) paired dco extending posteriorly for several chaetigers, (III) paired anterior dco in combination with unpaired, sexually dimorphic, metameric dco, and (IV) paired anterior dco in combination with paired, metameric dco. Previous ultrastructural studies have only included species possessing organs of groups I and III. In the present investigation the ultrastructure of dco found in Laonice bahusiensis and Spio cf. filicornis ( species with dco of groups II and IV) is studied in an attempt to consider their homology. Apart from the metameric dco of group III, similarities of the cellular components of the dco indicate a homology to nuchal organs.