Latitudinal variation in reproductive synchrony in Acropora assemblages: Japan vs. Australia
Latitudinal variation in reproductive synchrony in Acropora assemblages: Japan vs. Australia
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DOI：
10.3755/galaxea.11.101
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
A. Baird;A. Baird;Chico L. Birrel;T. Hughes;A. Mcdonald;S. Nojima;C. Page;Morgan S. Prachett;H. Yamasaki
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文献类型：
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作者：
A. Baird;A. Baird;Chico L. Birrel;T. Hughes;A. Mcdonald;S. Nojima;C. Page;Morgan S. Prachett;H. Yamasaki
摘要澳大利亚大堡礁（GBR）的石珊瑚每年的大量产卵在分类学和地理尺度上都是前所未有的。在这里，我们比较产卵的同步性和珊瑚物种之间的四个地区跨越10°纬度的大不列颠及北爱尔兰联合王国，并比较这与四个地区分开的一个类似的纬度范围内的日本热带和亚热带群岛。在GBR上，所有纬度的生殖活动高峰都发生在11月，而日本四个地区的生殖活动高峰期有明显的分离，热带地区的产卵时间提前了3个月。在Sekesei泻湖（22°N），高比例的鹿角珊瑚群落在4月满月后成熟;在Akajima岛（26°N），生殖活动高峰出现在5月;在Oku（28°N），生殖活动高峰出现在6月，在阿马库萨（31°N），生殖活动可能在7月达到高峰。然而，在两个详细检查的地区（大不列颠及北爱尔兰联合王国的圣灵群岛和赤岛），在每个满月之前至少5个月发现了成熟的鹿角珊瑚群落。虽然GBR上的这些区域似乎比日本类似纬度范围内的区域在生殖活动高峰期的时间方面表现得更均匀，并且在这些高峰期内成熟的菌落比例往往更高，但GBR上的生殖季节要长得多（5个月）。
Abstract The annual mass spawning of scleractinian corals on the Great Barrier Reef (GBR), Australia, is purported to be unprecedented in terms of the taxonomic and geographical scale of spawning synchrony. Here, we compare spawning synchrony both within and among coral species in four regions spanning 10°of latitude on the GBR and compare this with four regions separated by a similar latitudinal range within the Japanese tropical and sub-tropical Archipelago. On the GBR, peak reproductive activity at all latitudes occurred in November whereas there was a clear disjunction in the period of peak reproductive activity among the four regions in Japan, with tropical locations spawning up to 3 months earlier. In Sekesei Lagoon (22°N), a high proportion of Acropora colonies were mature following the full moon in April; at Akajima Island (26°N) peak reproductive activity occurred in May; at Oku (28°N) peak reproductive activity occurred in June and in Amakusa (31°N), reproductive activity likely peaked in July. However, mature colonies of Acropora were found prior to every full moon for at least 5 months at two regions examined in detail (The Whitsundays Islands on the GBR and Akajima Island). While these regions on GBR appear to act more homogeneously than regions over a similar latitudinal range in Japan with respect to the timing of peak reproductive activity, and the proportion of colonies mature was often higher during these peaks, the reproductive season on the GBR is much longer (5 months) than is typically appreciated.