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DOI | 10.1126/science.aao2740 |
Paradoxical escape responses by narwhals (Monodon monoceros) | |
Williams, Terrie M.1; Blackwell, Susanna B.2; Richter, Beau1; Sinding, Mikkel-Holger S.3,4; Heide-Jorgensen, Mads Peter4 | |
2017-12-08 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 358期号:6368页码:1329-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Denmark |
英文摘要 | Until recent declines in Arctic sea ice levels, narwhals (Monodon monoceros) have lived in relative isolation from human perturbation and sustained predation pressures. The resulting naivety has made this cryptic, deep-diving cetacean highly susceptible to disturbance, although quantifiable effects have been lacking. We deployed a submersible, animal-borne electrocardiograph-accelerometer-depth recorder to monitor physiological and behavioral responses of East Greenland narwhals after release from net entanglement and stranding. Escaping narwhals displayed a paradoxical cardiovascular down-regulation (extreme bradycardia with heart rate <= 4 beats per minute) superimposed on exercise up-regulation (stroke frequency >25 strokes per minute and energetic costs three to six times the resting rate of energy expenditure) that rapidly depleted onboard oxygen stores. We attribute this unusual reaction to opposing cardiovascular signals-from diving, exercise, and neurocognitive fear responses-that challenge physiological homeostasis. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417254700064 |
WOS关键词 | FEAR BRADYCARDIA ; EXERCISE ; COST |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/197491 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Calif Santa Cruz, Dept Ecol & Evolutionary Biol, Coastal Biol Bldg,130 McAllister Way, Santa Cruz, CA 95060 USA; 2.Greeneridge Sci, 90 Arnold Pl,Suite D, Santa Barbara, CA 93117 USA; 3.Univ Copenhagen, Nat Hist Museum Denmark, Ctr GeoGenet, DK-1350 Copenhagen, Denmark; 4.Greenland Representat, Greenland Inst Nat Resources, Strandgade 91,2, DK-1401 Copenhagen K, Denmark |
推荐引用方式 GB/T 7714 | Williams, Terrie M.,Blackwell, Susanna B.,Richter, Beau,et al. Paradoxical escape responses by narwhals (Monodon monoceros)[J]. SCIENCE,2017,358(6368):1329-+. |
APA | Williams, Terrie M.,Blackwell, Susanna B.,Richter, Beau,Sinding, Mikkel-Holger S.,&Heide-Jorgensen, Mads Peter.(2017).Paradoxical escape responses by narwhals (Monodon monoceros).SCIENCE,358(6368),1329-+. |
MLA | Williams, Terrie M.,et al."Paradoxical escape responses by narwhals (Monodon monoceros)".SCIENCE 358.6368(2017):1329-+. |
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