Exhausted with foraging: Foraging behavior is related to oxidative stress in chick-rearing seabirds
Exhausted with foraging: Foraging behavior is related to oxidative stress in chick-rearing seabirds
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DOI：
10.1016/j.cbpa.2021.110984
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发表时间：
2021-05-21
影响因子：
2.3
通讯作者：
Yoda, Ken
中科院分区：
文献类型：
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作者：
Koyama, Shiho;Mizutani, Yuichi;Yoda, Ken
为了了解野生动物的觅食策略和行为灵活性，重要的是评估觅食努力所施加的生理成本以及这些成本如何影响觅食和供应行为。氧化应激可能是野生海鸟觅食行为的一个生理指标，也可能影响其繁殖性能。然而，以前的研究没有同时记录野生海鸟的觅食行为和相关的氧化应激。使用基于氧化应激测量和生物记录技术的综合方法（即，使用动物源性传感器），我们在2018年和2019年确定了鸡饲养条纹剪水豚Calonectris leucomelas的觅食行为与氧化应激之间的关系。为了量化他们的氧化应激，我们测量了他们血浆中的活性氧代谢产物（d-ROM）和生物抗氧化潜力（BAP）。我们发现，d-ROM水平与距离殖民地的最大距离和起飞次数呈正相关，尤其是在2019年，海鸥飞得更远去觅食。在2018年，当他们飞行相对较短的距离时，BAP水平与他们的身体活动水平（整体动态身体加速度; ODBA）呈正相关。我们的结论是，更长的时间和不太成功的觅食可能会导致增加氧化应激，而成功的觅食可能会减轻觅食的氧化应激，通过提供膳食抗氧化剂。我们的研究结果强调，生物记录和氧化应激测量的综合数据有助于评估野生动物觅食行为的潜在生理成本。
To understand foraging strategies and behavioral flexibility in wild animals, it is important to evaluate the physiological costs imposed by foraging efforts and how these costs affect foraging and provisioning behavior. Oxidative stress is a possible physiological indicator associated with foraging behavior in wild seabirds, and may also affect their reproductive performance. However, no previous study has simultaneously recorded foraging behavior and the associated oxidative stress in wild seabirds. Using an integrative approach based on oxidative stress measurements and bio-logging techniques (i.e., the use of animal-borne sensors), we determined the relationships between foraging behavior and oxidative stress in chick-rearing streaked shearwaters Calonectris leucomelas in 2018 and 2019. To quantify their oxidative stress, we measured reactive oxygen metabolites (d-ROMs) and biological antioxidant potential (BAP) in their plasma. We found that the d-ROMs levels were positively related to the maximum distance from the colony and the number of takeoffs, especially in 2019 when shearwaters flew further to forage. In 2018, when they flew relatively short distances, the BAP levels were positively related to the levels of their physical activity (overall dynamic body acceleration; ODBA). We conclude that longer and less successful foraging may lead to increase oxidative stress, while successful foraging may mitigate the oxidative stress of foraging by providing dietary antioxidants. Our results highlight that the combined data from bio-logging and oxidative stress measurements aid in evaluating the underlying physiological costs of foraging behavior in wild animals.