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首页> 外文期刊>Marine ecology progress series >Spawning patterns of scleractinian corals at the Solitary Islands ― a high latitude coral community in eastern Australia
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Spawning patterns of scleractinian corals at the Solitary Islands ― a high latitude coral community in eastern Australia

机译：孤岛珊瑚礁的产卵模式-孤岛是澳大利亚东部的高纬度珊瑚群落

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摘要

The timing and synchrony of reproduction in scleractinian corals varies greatly among geographic locations, along latitudinal gradients, and among regions. On the east coast of Australia, there are extensive subtropical coral communities within the Solitary Islands Marine Park (30° S). From 1994 to 1996, the pattern of reproduction was studied in 27 species from 10 genera of broadcast spawning scleractinian corals. Spawning periods were determined directly from observations of 4 species that spawned in aquaria, and indirectly from repeated sampling of 236 tagged field colonies by noting the disappearance of mature gametes. Evidence of sexual reproduction was observed in 24 coral species, and gametes were released annually from December to April. Spawning periods were staggered among species and among colonies within some species. Spawning in massive species was generally more synchronous and predictable than for acroporid species. Massive coral species spawned from 8 to 12 nights after a full moon, whereas there was no obvious lunar periodicity of spawning among acroporid corals. This asynchronous pattern of reproduction contrasts with the highly synchronous spawning of more than 140 coral species during mass spawning periods on the Great Barrier Reef (GBR) in October to December each year. The delay in the timing of coral spawning at the Solitary Islands compared with the GBR coincides with the delayed rise in sea temperatures in the subtropics. In addition, the highly variable nature of sea temperatures at the Solitary Islands around the time of gamete maturation and spawning may account for the less synchronous pattern of reproduction in this high-latitude coral community.
机译：巩膜珊瑚繁殖的时间和同步性在地理位置，纬度梯度和区域之间差异很大。在澳大利亚的东海岸，孤岛海洋公园（30°S）内有广泛的亚热带珊瑚群落。从1994年到1996年，研究了繁殖模式产卵巩膜珊瑚10属27种的繁殖模式。通过观察在水族箱中产卵的4种物种直接确定产卵期，并通过注意成熟配子的消失间接从236个带标签的田间菌落的重复采样中间接确定产卵期。在24种珊瑚中观察到有性生殖的证据，并且每年12月至4月释放配子。产卵期在物种之间以及某些物种的殖民地之间错开。一般而言，大规模繁殖的产生比丙烯醛类的繁殖更为同步和可预测。满月后8到12夜产卵大量珊瑚，而在锥孔珊瑚中没有明显的产卵周期。这种非同步繁殖方式与每年10月至12月在大堡礁（GBR）大规模产卵期间高度同步产卵的140多种珊瑚形成鲜明对比。与GBR相比，孤岛珊瑚产卵时间的延迟与亚热带海温的延迟升高相吻合。另外，配子成熟和产卵前后孤岛的海水温度变化很大，这可能解释了该高纬度珊瑚群落繁殖的同步性较差。

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