Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands

Kentaro Kazama; Tomoko Harada; Tomohiro Deguchi; Hajime Suzuki; Yutaka Watanuki

doi:10.2326/osj.18.27

Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands

Kentaro Kazama, Tomoko Harada, Tomohiro Deguchi, Hajime Suzuki, Yutaka Watanuki

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Pelagic top predators that range widely over thousands of kilometres increase their turn rate and slow their movements within an area of mesoscale (<10 km). This behavior is known as "Area Restricted Search, or ARS" and is associated with aggregations of prey. Foraging range, diving behavior, and ARS were studied for nine Black-footed Albatrosses Phoebastria nigripes rearing chicks on Mukojima in the Ogasawara Islands, using GPS and time-depth data-loggers. Their prey composition was examined using regurgitations. They fed on fish, fish eggs and squid within a range of 96-427 km from the colony. They made shallow (0.6±0.2 m) dives in day-time (2.2 dives per hour of at sea time) but rarely did so at night (0.1 dives per hour of at sea time). ARS behavior was observed at the scale of 11-71 km during day- and night-time and tended to occur in locations with relatively high primary production.

Original language	English
Pages (from-to)	27-37
Number of pages	11
Journal	Ornithological Science
Volume	18
Issue number	1
DOIs	https://doi.org/10.2326/osj.18.27
Publication status	Published - 2019 Jan
Externally published	Yes

Keywords

Searching behavior

ASJC Scopus subject areas

Animal Science and Zoology

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title = "Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands",

abstract = "Pelagic top predators that range widely over thousands of kilometres increase their turn rate and slow their movements within an area of mesoscale (<10 km). This behavior is known as {"}Area Restricted Search, or ARS{"} and is associated with aggregations of prey. Foraging range, diving behavior, and ARS were studied for nine Black-footed Albatrosses Phoebastria nigripes rearing chicks on Mukojima in the Ogasawara Islands, using GPS and time-depth data-loggers. Their prey composition was examined using regurgitations. They fed on fish, fish eggs and squid within a range of 96-427 km from the colony. They made shallow (0.6±0.2 m) dives in day-time (2.2 dives per hour of at sea time) but rarely did so at night (0.1 dives per hour of at sea time). ARS behavior was observed at the scale of 11-71 km during day- and night-time and tended to occur in locations with relatively high primary production.",

keywords = "Searching behavior",

author = "Kentaro Kazama and Tomoko Harada and Tomohiro Deguchi and Hajime Suzuki and Yutaka Watanuki",

note = "Funding Information: We thank N. Emura for field support, K. Yoda and B. Nishizawa for supporting data analyses. We also thank D. Ochi and two anonymous reviewers for their constructive comments on our manuscript. This study was supported by Japan Society for the Promotion of Science ? 18651 111, #2024100102 to YW) and National Research Institute of Far Seas Fisheries, Japan Fisheries Research and Education Agency ?YW). Publisher Copyright: {\textcopyright} The Ornithological Society of Japan 2019. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

year = "2019",

month = jan,

doi = "10.2326/osj.18.27",

language = "English",

volume = "18",

pages = "27--37",

journal = "Ornithological Science",

issn = "1347-0558",

publisher = "Ornithological Society of Japan",

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AU - Kazama, Kentaro

AU - Harada, Tomoko

AU - Deguchi, Tomohiro

AU - Suzuki, Hajime

AU - Watanuki, Yutaka

N1 - Funding Information: We thank N. Emura for field support, K. Yoda and B. Nishizawa for supporting data analyses. We also thank D. Ochi and two anonymous reviewers for their constructive comments on our manuscript. This study was supported by Japan Society for the Promotion of Science ? 18651 111, #2024100102 to YW) and National Research Institute of Far Seas Fisheries, Japan Fisheries Research and Education Agency ?YW). Publisher Copyright: © The Ornithological Society of Japan 2019. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2019/1

Y1 - 2019/1

N2 - Pelagic top predators that range widely over thousands of kilometres increase their turn rate and slow their movements within an area of mesoscale (<10 km). This behavior is known as "Area Restricted Search, or ARS" and is associated with aggregations of prey. Foraging range, diving behavior, and ARS were studied for nine Black-footed Albatrosses Phoebastria nigripes rearing chicks on Mukojima in the Ogasawara Islands, using GPS and time-depth data-loggers. Their prey composition was examined using regurgitations. They fed on fish, fish eggs and squid within a range of 96-427 km from the colony. They made shallow (0.6±0.2 m) dives in day-time (2.2 dives per hour of at sea time) but rarely did so at night (0.1 dives per hour of at sea time). ARS behavior was observed at the scale of 11-71 km during day- and night-time and tended to occur in locations with relatively high primary production.

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Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands

Abstract

Keywords

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