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首页> 外文期刊>Transactions of the American Fisheries Society >The Impact of Different Hatchery Rearing Environments on Smolt-to-Adult Survival of Spring Chinook Salmon
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The Impact of Different Hatchery Rearing Environments on Smolt-to-Adult Survival of Spring Chinook Salmon

机译：不同孵化场饲养环境对春天奇努克三文鱼的模糊对成人生存的影响

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The aim of this study was to assess the effect of differing hatchery rearing environments on smolting, early male maturation, and smolt-to-adult return rates (SARs) in Chinook Salmon Oncorhynchus tshawytscha. In this investigation, SARs were compared for spring Chinook Salmon from Hood River stock reared at three different hatcheries and then released into the Hood River, replicated over three separate years (2010-2012). Differences in SARs were found both between rearing groups and release years. Smolts reared at Pelton Ladder had consistently higher SARs than those reared at either Parkdale or Carson hatcheries. Smolt length at release was positively correlated to SARs across years and rearing groups. In addition, multiple regression models suggested that attributes related to smolt quality were positively related to SARs while the minijack rate was negatively related to SAR. Migration of smolts downstream after release was also assessed. Larger smolts were faster downstream migrants and migration rate was positively related to subsequent SAR. Differences in smolt quality and SAR between rearing groups is attributed to differing patterns of growth in the different hatchery environments. The best-performing smolts came from rearing groups that experienced a strong seasonal change in growth rate: relatively high growth in the summer, reduced growth and depletion of energetic stores in the autumn and winter, and then increased growth again in the spring. This pattern of seasonal anabolic and catabolic changes has been termed the wild fish template, and generating this physiological pattern generally may be applicable to hatchery-reared Chinook Salmon.
机译：本研究的目的是评估不同孵化场饲养环境对核桃三文鱼Oncorhynchus Tshawytscha中的摩擦，早期雄性成熟和血液成人返回率（SARS）的影响。在这次调查中，将SARS与Spring Chinook Salmon从罩河股票中饲养在三个不同的孵化场，然后释放到汉语河中，复制三年（2010-2012）。在饲养组和释放年份之间发现了SARS的差异。在Pelton Ladder饲养的斯普尔斯始终如一的SARS，而不是在Parkdale或Carson Hatcheries饲养的那些。在释放释放时的糊状长度与跨年和饲养群体的SARS呈正相关。此外，多元回归模型表明，与SARS呈正相关的与SAR有关的属性与SAR负相关。还评估了释放后下游的液体迁移。较大的泡沫更快地下游移民和迁移率与随后的SAR呈正相关。饲养组之间的灰质质量和SAR的差异归因于不同孵化环境中的不同增长模式。最好的斯莫斯来自饲养群体，经历了强劲的增长率季节性变化：夏季的增长率相对较高，秋季和冬季的高力店的增长率降低，然后在春季再次增加了增长。这种季节性合成代谢和分解代谢变化的模式已被称为野生鱼类模板，并且通常可能适用于孵化场饲养的Chinook三文鱼。

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    Beckman Brian R.; Harstad Deborah L.; Spangenberg Dina K.; Gerstenberger Ryan S.; Brun Chris V.; Larsen Donald A.;

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    NOAA Natl Marine Fisheries Serv Northwest Fisheries Sci Ctr Environm &

    Fisheries Sci 2725 Montlake Blvd East Natori Miyagi 98112 Japan;

    NOAA Natl Marine Fisheries Serv Northwest Fisheries Sci Ctr Environm &

    Fisheries Sci 2725 Montlake Blvd East Natori Miyagi 98112 Japan;

    NOAA Natl Marine Fisheries Serv Northwest Fisheries Sci Ctr Environm &

    Fisheries Sci 2725 Montlake Blvd East Natori Miyagi 98112 Japan;

    Hood River Field Off Confederated Tribes Warm Springs Reservat 6030 Dee Highway Parkdale OR 97041 USA;

    Hood River Field Off Confederated Tribes Warm Springs Reservat 6030 Dee Highway Parkdale OR 97041 USA;

    NOAA Natl Marine Fisheries Serv Northwest Fisheries Sci Ctr Environm &

    Fisheries Sci 2725 Montlake Blvd East Natori Miyagi 98112 Japan;

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  • 中图分类 水产、渔业;
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