Reproduction in Zoanthidea (Anthozoa: Hexacorallia)

Reproduction in Zoanthidea (Anthozoa: Hexacorallia)
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Zoantidea 的繁殖(Anthozoa:Hexacorallia)

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发表时间:
1997
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通讯作者:
J. Ryland
J. Ryland
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作者:
J. Ryland

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摘要 回顾了有关马铃薯生殖生物学的知识状况。 Macrocnemina 亚目中的群体,除了少数例外,都是雌雄同体的。 Brachycnemina 中的那些可能基本上是雌雄同体,但在群体中进行准确取样很困难,而且物种或群体也有例外。两种深海的Epizoanthus物种持续繁殖,而温带浅水的zoanthids则在纬度~15°以外的热带地区进行间生,在夏季或气温升高时产卵。卵子发生需要几个月的时间,但产卵事件可能非常短暂。 Parazoanthus parasiticusin Bermuda 主要在 8 月下旬或 9 月的 1-2 个晚上产卵,显然是在满月时;Protopalythoa sp. 1,可能还有大堡礁的 Palythoa caesia 在 11 月(初夏)满月后的 3-5 个晚上产卵。这些具有短暂且精确定义的产卵季节的物种可能会在第一次产卵事件一个月后经历第二次较小规模的产卵事件......
Summary The state of knowledge concerning the reproductive biology of zoanthids is reviewed. Colonies in the suborder Macrocnemina, with few exceptions, are gonochoric; those in Brachycnemina are probably basically hermaphroditic but accurate sampling in colonies that fragment is difficult and exceptions by species or populations occur. Two deepsea species of Epizoanthus breed continuously but temperate shallow water zoanthids, and those in the tropics outside ∼15° latitude are iteroparous with spawning in summer or when temperatures are rising. Oogenesis occurs over a few months but the spawning event may be very brief. Parazoanthus parasiticusin Bermuda spawns mainly on 1–2 nights in late August or September, apparently at full moon;Protopalythoa sp. 1, and probably Palythoa caesia in the Great Barrier Reef spawn 3–5 nights after full moon in November (early summer). These species with short, precisely defined spawning seasons may undergo a second, smaller-scale spawning event one month after the first....