Amphiglena terebro sp. nov. (Polychaeta: Sabellidae: Sabellinae) from eastern Australia; including a description of larval development and sperm ultrastructure
Amphiglena terebro sp. nov. (Polychaeta: Sabellidae: Sabellinae) from eastern Australia; including a description of larval development and sperm ultrastructure
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Amphiglena terebro sp.
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
G. Rouse
中科院分区：
文献类型：
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作者：
G. Rouse
摘要 Amphiglenaterebro sp。十一月（多毛类：Sabellidae）来自澳大利亚东部。该种可根据胸毛毛虫和背毛毛虫的形状、胸毛毛虫和腹部毛毛虫的数量以及整体大小与其他三种双毛毛毛毛虫区别。 Amphiglena terebro 是同时雌雄同体，卵母细胞位于前腹毛虫中，精子和精细胞位于随后的腹部毛虫中。精子有一个细长的细胞核和长的中段，顶体和细胞核在精子的尖端相互缠绕。精子发生发生在与细胞团相连的大型、同步发育的团块中。全年直接发育的幼虫与成虫一起在管中孵化。任何时候都可以在试管中发现几只处于不同发育阶段的幼虫。早期幼虫呈细长椭圆形（500 p.m 长），具有突出的原支座和神经支座。幼虫发育出所有 8 种胸毛毛虎，其中包括脊毛毛毛虫和...
Abstract Amphiglenaterebro sp. nov. (Polychaeta: Sabellidae) is described from eastern Australia. This species can be distinguished from the other three species of Amphiglena Claparede on the basis of the shape of thoracic uncini and notochaetae, the number of thoracic and abdominal chaetigers and overall size. Amphiglena terebro is a simultaneous hermaphrodite with oocytes in the anterior abdominal chaeugers and sperm and spermatids in the following abdominal chaetigers, Sperm have an elongate nucleus and long midpiece, The acrosome and nucleus spiral around each other at the tip of the sperm. Spermiogenesis occurs in large, synchronously developing masses connected to a cytophore, Throughout the year direct-developing larvae are brooded in the tube with the adult. Severallarvae at different stages of development could be found in a tube at anyone time. Early larvae are elongate ellipses (500 p.m long) with a prominent prototroch and neurotroch. Larvae develop all 8 thoracic chaetigers with notochaetae a...