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首页> 外文期刊>ICES Journal of Marine Science >Sensitivity of sand lance to shifting prey and hydrography indicates forthcoming change to the northeast US shelf forage fish complex
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Sensitivity of sand lance to shifting prey and hydrography indicates forthcoming change to the northeast US shelf forage fish complex

机译：沙枪对移位猎物和水文的敏感性表明即将到来的东北美国货架饲料鱼综合体变化

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摘要

Northern sand lance (Ammodytes dubius) and Atlantic herring (Clupea harengus) represent the dominant lipid-rich forage fish speciesthroughout the Northeast US shelf and are critical prey for numerous top predators. However, unlike Atlantic herring, there is little researchon sand lance or information about drivers of their abundance. We use intra-annual measurements of sand lance diet, growth, and conditionto explain annual variability in sand lance abundance on the Northeast US Shelf. Our observations indicate that northern sand lance feed,grow, and accumulate lipids in the late winter through summer, predominantly consuming the copepod Calanus finmarchicus. Sand lancethen cease feeding, utilize lipids, and begin gonad development in the fall. We show that the abundance of C. finmarchicus influences sandlance parental condition and recruitment. Atlantic herring can mute this effect through intra-guild predation. Hydrography further impactssand lance abundance as increases in warm slope water decrease overwinter survival of reproductive adults. The predicted changes to thesedrivers indicate that sand lance will no longer be able to fill the role of lipid-rich forage during times of low Atlantic herring abundance-changing the Northeast US shelf forage fish complex by the end of the century.
机译：北沙兰（Ammodytes Dubius）和大西洋鲱鱼（Clupea Harengus）代表了富含脂质丰富的牧草鱼种整个东北美国货架上是众多顶级掠食者的关键猎物。但是，与大西洋鲱鱼不同，几乎没有研究在沙漠或有关其丰富司机的信息。我们使用年度射击饮食，生长和病情在东北美国货架上解释沙枪丰富的年度变异。我们的观察结果表明北部沙兰饲料，在夏天晚期生长，积累脂质，主要是消耗了Copepod Calanus Finmarchicus。沙枪然后停止喂养，利用脂质，并开始在秋季的Gonad发展。我们展示了丰富的C.Finmarchicus影响沙子兰斯父母条件和招聘。大西洋鲱鱼可以通过对公会的捕食来静音这种效果。水文进一步影响砂喷砂丰度随着暖坡水的增加，溢洪越冬生殖成人的存活率。预测的改变了这些司机表明，在低大西洋鲱鱼丰富期间，沙枪将不再能够填补富含脂质的牧草的作用 - 到世纪末，改变东北美国货架饲养鱼综合体。

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  • 来源
    《ICES Journal of Marine Science》 |2021年第3期|1023-1037|共15页
  • 作者

    Justin J. Suca; David N. Wiley; Tammy L. Silva; Anna R. Robuck; David E. Richardson; Sarah G. Glancy; Emily Clancey; Teresa Giandonato; Andrew R. Solow; Michael A. Thompson; Peter Hong; Hannes Baumann; Les Kaufman; Joel K. Llopiz;

  • 作者单位

    Woods Hole Oceanographic Institution Woods Hole MA 02543 USA MIT-WHOI Joint Program in Oceanography/Applied Ocean Science & Engineering Cambridge and Woods Hole MA USA;

    Stellwagen Bank National Marine Sanctuary 175 Edward Foster Road Scituate MA 02066 USA;

    Stellwagen Bank National Marine Sanctuary 175 Edward Foster Road Scituate MA 02066 USA Department of Fisheries Oceanography School for Marine Science and Technology University of Massachusetts Dartmouth New Bedford MA USA;

    University of Rhode Island Graduate School of Oceanography 215 S Ferry Road Narragansett RI 02882 USA;

    Northeast Fisheries Science Center 28 Tarzwell Drive Narragansett RI 02882 USA;

    Woods Hole Oceanographic Institution Woods Hole MA 02543 USA;

    University of North Carolina Wilmington 601 S. College Road Wilmington NC 28403 USA;

    Colorado Mesa University 100 North Avenue Grand Junction CO 81501 USA;

    Woods Hole Oceanographic Institution Woods Hole MA 02543 USA;

    Stellwagen Bank National Marine Sanctuary 175 Edward Foster Road Scituate MA 02066 USA;

    Stellwagen Bank National Marine Sanctuary 175 Edward Foster Road Scituate MA 02066 USA;

    Department of Marine Sciences University of Connecticut 1080 Shennecossett Road Groton CT 06340 USA;

    Department of Biology Boston University 5 Cummington Mall #101 Boston MA 02215 USA;

    Woods Hole Oceanographic Institution Woods Hole MA 02543 USA;

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  • 正文语种 eng
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  • 关键词

    Calanus; changepoint; climate change; forage fish; recruitment; trophic ecology;

    机译：Calanus;变换点;气候变化;饲料鱼;招聘;营养师生态学;

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