Distribution Expansion and Historical Population Outbreak Patterns of Crown-of-Thorns Starfish, Acanthaster planci sensu lato, in Japan from 1912 to 2015
Distribution Expansion and Historical Population Outbreak Patterns of Crown-of-Thorns Starfish, Acanthaster planci sensu lato, in Japan from 1912 to 2015
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1912年至2015年日本棘冠海星Acanthaster planci sensu lato的分布扩展和历史种群爆发模式
DOI：
10.1007/978-981-10-6473-9_9
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
N. Yasuda
中科院分区：
文献类型：
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作者：
N. Yasuda
本章回顾了1912年至2015年日本棘冠海星的分布和种群爆发记录。文献综述表明，A.从1945年起，广布分布从奄美大岛（原最北分布区）向北扩展到三宅岛和后藤岛。日本A. plancisensu lato种群表明，幼虫扩散可能导致这种向极地迁移。日本温带地区的水温显著上升，这意味着全球变暖是导致这种向极地迁移的部分原因。在温带地区也观察到更频繁和更严重的种群暴发，这可能与水温升高和幼虫从南方连续扩散有关。总的来说，在日本连续两次重大的人口暴发中观察到了复杂和持续的模式：1969年至1991年和1995年至今。证据表明，西部冲绳人群是日本境内二次暴发的最可能起源地。奄美人群也可能是温带地区疫情的重要来源。然而，至少在小笠原和大隅群岛两个地区没有发现人口暴发的记录。小笠原位于黑潮以南约1000公里处，因此通过其他种群的幼虫传播的侵扰比其他黑潮区域更有限。然而，大隅群岛位于黑潮的中部，这意味着没有足够的珊瑚供A. plancisensu lato或未知的环境因素，如大量的幼海星捕食者抑制了补充和幼海星的生存。
The present chapter reviews the distribution and population outbreak records of the crown-of-thorns starfish,Acanthaster plancisensu lato, in Japan from 1912 to 2015. The literature survey suggests thatA. plancisensu lato distribution has been extending northward since 1945 from Amami Oshima (its previous northernmost distribution) to Miyake Island and Goto Island. Genetic homogeneity within JapaneseA. plancisensu lato populations indicates that larval dispersal has likely caused this poleward migration. Water temperatures have significantly increased in the temperate area of Japan, implying that global warming is partly responsible for this poleward migration. More frequent and intense population outbreaks in temperate areas were also observed, possibly in relation to increased water temperatures and successive larval dispersal from the south. Overall, complex and persistent patterns were observed for two major successive population outbreaks in Japan: from 1969 to 1991 and from 1995 to now. The evidence suggests that the western Okinawa populations are the most likely origin for secondary outbreaks within Japan. The Amami population is also likely to be an important source for outbreaks in temperate regions. However, no records of population outbreaks were found for least in two regions: Ogasawara and the Osumi Islands. Ogasawara is located approximately 1000 km south of the Kuroshio Current, so infestation via larval dispersal from other populations is more limited than in other Kuroshio regions. The Osumi Islands are, however, located in the middle of the Kuroshio Current, implying that insufficient corals are available for the growth ofA. plancisensu lato or that unknown environment factors such as abundant predators of juvenile starfish suppress recruitment and juvenile survival.