Larval development and intermoult period of the hydrothermal vent barnacle Neoverruca sp.
Larval development and intermoult period of the hydrothermal vent barnacle Neoverruca sp.
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DOI：
10.1017/s0025315404009841h
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发表时间：
2004-08
影响因子：
1.2
通讯作者：
H. Watanabe;R. Kado;Shinji Tsuchida;H. Miyake;Masanori Kyo;S. Kojima
中科院分区：
文献类型：
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作者：
H. Watanabe;R. Kado;Shinji Tsuchida;H. Miyake;Masanori Kyo;S. Kojima
在实验室条件下饲养了热液喷口藤壶Neoverruca sp.的幼虫，并观察了幼虫的发育。在这些条件下，幼虫作为第一阶段无节幼体从成虫中释放出来，尽管其他深海藤壶的幼虫通常被认为是在较晚的幼虫阶段（如Cyprid阶段）释放出来的。新萤叶甲的幼虫在六个无节幼体阶段和随后的鲤科幼虫阶段都是卵营养型的。在目前的饲养条件下，新疣藤壶的幼虫期超过96天，这是迄今为止报道的藤壶中最长的。然而，大多数Cyprid幼虫表现出异常的形态，没有幼虫成功地解决了基板上。这些观察表明，如此长的幼虫期可能使neoverrucid藤壶之间的喷口领域分散。
Larvae of the hydrothermal vent barnacle Neoverruca sp. were reared under laboratory conditions and larval development was observed. Under these conditions, the larvae were released from adults as first-stage nauplii, although the larvae of other deep-sea barnacles have generally been considered to be released at a later larval stage such as the cyprid stage. The larvae of Neoverruca sp. were lecithotrophic through six naupliar stages and the subsequent cyprid stage. The larval period of Neoverruca sp. was more than 96 days under the present rearing conditions, which is the longest yet reported for barnacles. Most cyprid larvae, however, exhibited abnormal morphology and no larvae settled successfully on the substrate. These observations suggest that such a long larval period might enable neoverrucid barnacles to disperse between vent fields.