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首页> 外文期刊>Marine biology >Seasonality, Lunar Periodicity Of Settlement And Microhabitat Association Of Juvenile Humpback Red Snapper Lutjanus Gibbus (lutjanidae) In An Okinawan Coral Reef
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Seasonality, Lunar Periodicity Of Settlement And Microhabitat Association Of Juvenile Humpback Red Snapper Lutjanus Gibbus (lutjanidae) In An Okinawan Coral Reef

机译：冲绳珊瑚礁少年座头红鲷鱼Lutjanus Gibbus（lutjanidae）的季节性，定居周期和微栖息地协会

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摘要

Snappers (Lutjanidae) are one of the important fisheries resources in tropical and subtropical waters. However, there have been few studies clarifying the ecology of newly settled juvenile snappers. The aims of the present study were to clarify the seasonality and lunar periodicity of the larval settlement, and the microhabitat association of newly settled juveniles for Lutjanus gibbus in an Okinawan coral reef. Fifteen coral patches were chosen and underwater visual surveys were conducted during a 2-year period. The larval settlement of the species mainly occurred between May and October during the 2-year survey period. In terms of lunar periodicity of the settlement, the newly settled juveniles were mainly found between the last quarter moon and new moon during the main settlement season. Back calculations of settlement dates based on otolith microstructure showed that most juveniles settled during the last quarter moon and new moon. Stepwise multiple regression analyses revealed that the newly settled juveniles were mainly found on coral patches with a large number of holes on the top of the coral patch and this tendency was mainly consistent during the study period. The volume of holes at the base of coral patches had also a positive effect on the abundance of newly settled juveniles in some cases. The results of the present study suggest that larval settlement has a strong seasonal and lunar periodicity, and newly settled juveniles select coral patches with available refuge spaces.
机译：鲷鱼（L科）是热带和亚热带水域中重要的渔业资源之一。但是，很少有研究澄清新近定居的鲷鱼的生态。本研究的目的是弄清幼虫定居的季节和月球周期，以及在冲绳珊瑚礁中新定居的长臂猿幼体的微生境协会。在两年的时间内，选择了15个珊瑚斑块并进行了水下目视调查。该物种的幼虫沉降主要发生在两年调查期内的5月至10月之间。就定居的月球周期而言，新定居的少年主要发现在主要定居季节的最后一个四分之一月与新月之间。根据耳石的微结构对定居日期的反算表明，大多数少年在最后一个四分之一月和新月期间定居。逐步多元回归分析表明，新近定居的幼鱼主要在珊瑚斑块上发现，在珊瑚斑块的顶部有大量孔洞，这种趋势在研究期间基本一致。在某些情况下，珊瑚斑块底部的孔洞数量也对新近定居的幼鱼的数量产生积极影响。本研究的结果表明，幼虫的定居具有很强的季节性和农历周期，并且新定居的幼鱼选择具有可用避难空间的珊瑚斑。

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  • 来源
    《Marine biology》 |2009年第3期|p.407-414|共8页
  • 作者

    Atsushi Nanami; Hideaki Yamada;

  • 作者单位

    Ishigaki Tropical Station, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukai-Ota 148-446, Ishigaki, Okinawa 907-0451, Japan;

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  • 正文语种 eng
  • 中图分类 环境生物学;
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