Mass spawning by the sea urchin Evechinus chloroticus (Echinodermata: Echinoidea) in a New Zealand fiord
Mass spawning by the sea urchin Evechinus chloroticus (Echinodermata: Echinoidea) in a New Zealand fiord
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DOI：
10.1007/s002270050379
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发表时间：
1998-08-01
期刊：
影响因子：
2.4
通讯作者：
Stewart, BG
中科院分区：
文献类型：
--
作者：
Lamare, MD;Stewart, BG
在新西兰的一个大峡湾，怀疑的声音，现场观察到的海胆Evechinus chloroticus（Valenciennes）的大规模同步产卵。产卵发生在1994年1月27日17时30分至18时30分之间，恰逢满月、大潮和海水温度下降。在产卵过程中，海胆形成了一个密集的产卵聚集体，两性，与> 90%的海胆观察产卵的时间。产卵的ga梅特斯布满了水柱，有些被小的拉布拉多鱼类吃掉。产卵，这可能是广泛的40公里，标志着42至50%的性腺指数下降，并导致广泛，密集的队列E。在峡湾内发现了绿球藻幼虫。
A mass synchronous spawning of the sea urchin Evechinus chloroticus (Valenciennes) was observed in situ in Doubtful Sound, a large New Zealand fiord. Spawning occurred between 17:30 hrs and 18:30 hrs on 27 January 1994 and coincided with a full moon, spring tides and a period of decreasing sea temperatures. During spawning, the sea urchins formed a dense spawning aggregation of both sexes, with > 90% of the urchins observed spawning at the time. Spawned ga metes clouded the water column, and some were eaten by small labrid fish species. The spawning, which may have been as widespread as 40 km, marked a 42 to 50% decrease in gonad indices and resulted in a widespread, dense cohort of E. chloroticus larvae within the fiord.