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首页> 外文期刊>Marine biology >Spatial and temporal population dynamics of the crown-of-thorns starfish, Acanthaster planci, over a 24-year period along the central west coast of Okinawa Island, Japan
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Spatial and temporal population dynamics of the crown-of-thorns starfish, Acanthaster planci, over a 24-year period along the central west coast of Okinawa Island, Japan

机译：日本冲绳岛中西部沿海棘冠海星Acanthaster planci在24年期间的时空种群动态

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摘要

Boom and bust dynamics are a prominent characteristic of the crown-of-thorns starfish (Acanthaster planci) populations. Outbreaking starfish populations damage coral communities extensively and then often disappear quickly. In contrast, Onna village, on the central west coast of Okinawa Island, Japan, has been experiencing chronically high population densities of A. planci for decades. In this study, we examined spatial and temporal population dynamics of A. planci along the coast of Onna village, using removal data gathered over 24 years by a local fisheries cooperative. The results demonstrate that A. planci populations along the Onna coast often experienced high densities prior to 2003 and that recently, populations have again been increasing drastically. Size-frequency distributions suggest multiple, successive recruitment, as one of the driving factors maintaining A. planci populations in this location. Moreover, within the Onna area, the timing of outbreak peaks varied among different locations, showing a northward progression.
机译：繁荣和萧条的动力是荆棘冠海星（Acanthaster planci）种群的显着特征。爆发的海星种群广泛破坏了珊瑚群落，然后常常迅速消失。相比之下，日本冲绳岛中部西海岸的恩纳村几十年来一直处于长期高密度的普氏按蚊种群之中。在这项研究中，我们使用了当地一家渔业合作社24年来收集的清除数据，研究了恩纳村沿岸的浮萍的时空种群动态。结果表明，恩纳海岸沿岸的浮游杆菌种群通常在2003年之前经历高密度，最近，种群又再次急剧增加。大小-频率分布建议多次连续募集，作为在该位置维持浮游曲霉种群的驱动因素之一。此外，在恩纳地区，暴发高峰的时间在不同地点之间也有所不同，显示出向北发展。

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  • 来源
    《Marine biology》 |2014年第11期|2521-2530|共10页
  • 作者

    Masako Nakamura; Ken Okaji; Yoshimi Higa; Eiji Yamakawa; Satoshi Mitarai;

  • 作者单位

    Marine Biophysics Unit, Okinawa Institute of Science and Technology, Onna, Okinawa 904-0412, Japan;

    Coralquest Inc., Atsugi, Kanagawa 243-0014, Japan;

    Onna Village Fisheries Cooperative, Onna, Okinawa 904-0414, Japan;

    Okinawa Environment Science Center, Urasoe, Okinawa 901 -2111, Japan;

    Marine Biophysics Unit, Okinawa Institute of Science and Technology, Onna, Okinawa 904-0412, Japan;

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