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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Flying to the moon: Lunar cycle influences trip duration and nocturnal foraging behavior of the wedge-tailed shearwater Ardenna pacifica
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Flying to the moon: Lunar cycle influences trip duration and nocturnal foraging behavior of the wedge-tailed shearwater Ardenna pacifica

机译：飞向月球：登月周期影响楔形尾切水Ardenna pacifica的旅行持续时间和夜间觅食行为

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摘要

Lunar phase and illumination are known to affect nocturnal behavior of many organisms, particularly through predator-prey interactions. Visual predators can benefit from higher light levels to increase their activity, while prey may decrease their activity to avoid predation. The lower number of nocturnal seabirds observed on colonies during full moon nights has been mostly interpreted as a predation avoidance strategy. However, it is also possible that shearwaters take advantage of the moon's illumination to feed also at night, and stay at sea to forage during full moon nights. We used miniaturized GPS-loggers to obtain 179 tracks from 99 wedge-tailed shearwaters breeding in New Caledonia, to investigate moonlight effects on individual behavior. Lunar phase significantly predicted self-provisioning trip duration, with individuals performing longer trips around the full moon. However, this relationship was not significant during chick-provisioning trips when adults have to frequently return to the colony. Adults mostly returned to the colony during moonlit periods, refuting the predation avoidance theory. Tracked individuals showed an unexpectedly high amount of nocturnal foraging activity (28% of total activity), positively influenced by the presence of the moon. delta N-15 stable isotope values were significantly related to the percentage of nocturnal foraging, but with a weak relationship, impeding our ability to confirm that wedge-tailed shearwaters fed on different prey when foraging at night. This study suggests that reduced colony attendance around the full moon may be linked to greater at-sea foraging opportunities in distant oceanic areas than to increased predation risk on land.
机译：众所周知，月相和光照会影响许多生物的夜间行为，特别是通过掠食者与猎物的相互作用。视觉掠食者可以从较高的光照强度中受益，以增加其活动性，而猎物则可以降低其活动性，从而避免被捕食。在满月之夜在殖民地观察到的夜间海鸟数量较少，通常被认为是一种避免捕食的策略。但是，剪切水也有可能利用月亮的光照在晚上也进食，而在满月的夜晚留在海上觅食。我们使用了微型GPS记录仪，从新喀里多尼亚繁殖的99条楔尾尾水中获得了179条航迹，以研究月光对个体行为的影响。登月阶段显着预测了自我预备旅行的持续时间，个人在满月周围进行了更长的旅行。但是，当成年鸡不得不经常返回该群体时，这种关系在提供小鸡的旅行中并不重要。成年人大多在月光下回到殖民地，驳斥了避免捕食理论。受跟踪的个体表现出出乎意料的大量夜间觅食活动（占总活动的28％），受到月球的存在的积极影响。 δN-15稳定同位素值与夜间觅食的百分比显着相关，但关系较弱，这阻碍了我们确认夜间觅食时楔尾shear水喂养不同猎物的能力。这项研究表明，满月前后殖民地出勤率的下降可能与遥远海洋地区更大的海上觅食机会有关，而不是与陆地上掠食风险的增加有关。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2020年第4期|151322.1-151322.9|共9页
  • 作者

    Ravache Andreas; Bourgeois Karen; Thibault Martin; Dromzee Sylvain; Weimerskirch Henri; de Grissac Sophie; Prudor Aurelien; Lorrain Anne; Menkes Christophe; Allain Valerie; Bustamante Paco; Letourneur Yves; Vidal Eric;

  • 作者单位

    Aix Marseille Univ IMBE CNRS IRD Avignon Univ Ctr IRD Noumea BP A5 F-98848 Noumea New Caledonia France|Univ La Reunion Inst Rech Dev Lab Excellence Labex CORAIL UMR ENTROPIE IRD CNRS BP A5 F-98848 Noumea New Caledonia France|Univ New Caledonia ISEA BP R4 F-98851 Noumea New Caledonia France;

    Aix Marseille Univ IMBE CNRS IRD Avignon Univ Ctr IRD Noumea BP A5 F-98848 Noumea New Caledonia France;

    Univ La Reunion Inst Rech Dev Lab Excellence Labex CORAIL UMR ENTROPIE IRD CNRS BP A5 F-98848 Noumea New Caledonia France;

    CNRS Ctr Etud Biol Chize Paris France;

    Univ Brest LEMAR Ifremer CNRS IRD F-29280 Plouzane France;

    SPC Secretariat Pacific Community BP D5 F-98848 Noumea New Caledonia France;

    La Rochelle Univ Littoral Environm & Soc LIENSs UMR 7266 CNRS 2 Rue Olympe Gouges F-17000 La Rochelle France|IUF 1 Rue Descartes F-75005 Paris France;

    Univ New Caledonia ISEA BP R4 F-98851 Noumea New Caledonia France;

    Aix Marseille Univ IMBE CNRS IRD Avignon Univ Ctr IRD Noumea BP A5 F-98848 Noumea New Caledonia France|Univ La Reunion Inst Rech Dev Lab Excellence Labex CORAIL UMR ENTROPIE IRD CNRS BP A5 F-98848 Noumea New Caledonia France;

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  • 正文语种 eng
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  • 关键词

    Ardenna pacifica; Foraging; Lunar phase; Moon; GPS-tracking; Stable isotope analyses;

    机译：Ardenna pacifica;觅食;月相;月亮;GPS追踪;稳定同位素分析;

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