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Relationship between the growth and survival of larval Pacific bluefin tuna, Thunnus orientalis

机译：太平洋金枪鱼幼体太平洋蓝鳍金枪鱼的生长与存活的关系

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摘要

We tested the hypothesis that a large body size and rapid growth rate affect the survival of larval Pacific bluefin tuna, Thunnus orientalis (PBT), and analyzed larval growth in relation to environmental conditions. Seven high density larval patches of PBT were tracked with reference buoys in the northwestern Pacific Ocean for 28-171 h in May-June from 2004 to 2008. The otolith radii and daily growth rates of the survivor larvae (collected on later tracking days of each tracking session) tended to be larger and more rapid, respectively, than those of original larvae (collected on earlier tracking days). A large body size was found to positively affect the survival of larval PBT, as did a rapid growth rate, even at an early larval stage (7 days after hatching). Generalized linear modeling showed that the otolith radius was influenced positively by the sea temperature, stratification parameter and food density, while the growth rate was influenced positively by the sea temperature and food density.
机译：我们测试了一个假设，即较大的体型和快速的生长速度会影响幼体太平洋蓝鳍金枪鱼（Thunnus Orientalis，PBT）的生存，并分析与环境条件相关的幼体生长。 2004年至2008年5月至6月，在西北太平洋中用参考浮标追踪了7个高密度的PBT幼虫斑块，持续了28-171 h。幸存者幼虫的耳石半径和日增长率（在每个追踪日的追踪日收集）跟踪会话）通常比原始幼虫（在较早的跟踪日期收集）要大得多，而且速度也更快。发现较大的体形对幼虫PBT的存活有积极的影响，即使在幼体早期（孵化后7天），其快速的生长速度也是如此。广义线性模型表明，耳石半径受海水温度，分层参数和食物密度的正影响，而生长速率受海水温度和食物密度的正影响。

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  • 来源
    《Marine biology》 |2013年第3期|691-702|共12页
  • 作者

    Keisuke Satoh; Yosuke Tanaka; Masachika Masujima; Makoto Okazaki; Yoshiki Kato; Hiroshi Shono; Kentaro Suzuki;

  • 作者单位

    National Research Institute of Far Seas Fisheries, 5-7-1 Orido,Shimizu-ku, Shizuoka 424-8633, Japan;

    Amami Station, National Center for Stock Enhancement, 955-5 Hyou-Sakiyama, Setouchi, Ohshima, Kagoshima 894-2414, Japan;

    National Research Institute of Fisheries Science, 2-12-4 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan;

    National Research Institute of Fisheries Science, 2-12-4 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan;

    National Research Institute of Far Seas Fisheries Yokohama Office, 2-12-4 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan;

    Faculty of Fisheries, Kagoshima University, 4-50-20 Simoarata, Kagoshima 890-0056, Japan;

    Institute of Environmental Ecology, IDEA Consultants, Inc., 1334-5 Riemon, Ooigawa, Shida, Shizuoka 421-0212, Japan;

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