Title |
At–Sea Behavior Varies with Lunar Phase in a Nocturnal Pelagic Seabird, the Swallow-Tailed Gull
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Published in |
PLOS ONE, February 2013
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DOI | 10.1371/journal.pone.0056889 |
Pubmed ID | |
Authors |
Sebastian M. Cruz, Mevin Hooten, Kathryn P. Huyvaert, Carolina B. Proaño, David J. Anderson, Vsevolod Afanasyev, Martin Wikelski |
Abstract |
Strong and predictable environmental variability can reward flexible behaviors among animals. We used long-term records of activity data that cover several lunar cycles to investigate whether behavior at-sea of swallow-tailed gulls Creagrus furcatus, a nocturnal pelagic seabird, varied with lunar phase in the Galápagos Islands. A Bayesian hierarchical model showed that nighttime at-sea activity of 37 breeding swallow-tailed gulls was clearly associated with changes in moon phase. Proportion of nighttime spent on water was highest during darker periods of the lunar cycle, coinciding with the cycle of the diel vertical migration (DVM) that brings prey to the sea surface at night. Our data show that at-sea behavior of a tropical seabird can vary with environmental changes, including lunar phase. |
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Country | Count | As % |
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United States | 1 | 50% |
United Kingdom | 1 | 50% |
Demographic breakdown
Type | Count | As % |
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Scientists | 1 | 50% |
Members of the public | 1 | 50% |
Mendeley readers
Geographical breakdown
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Spain | 1 | 1% |
Portugal | 1 | 1% |
Ecuador | 1 | 1% |
Unknown | 90 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 27 | 29% |
Researcher | 15 | 16% |
Student > Master | 14 | 15% |
Student > Bachelor | 7 | 8% |
Professor | 3 | 3% |
Other | 8 | 9% |
Unknown | 19 | 20% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 37 | 40% |
Environmental Science | 20 | 22% |
Medicine and Dentistry | 2 | 2% |
Social Sciences | 2 | 2% |
Nursing and Health Professions | 1 | 1% |
Other | 9 | 10% |
Unknown | 22 | 24% |