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 | |
| Publication status | Published - 2019 Jan 1 |
| Externally published | Yes |
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Keywords
- Searching behavior
ASJC Scopus subject areas
- Animal Science and Zoology
Cite this
Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands. / Kazama, Kentaro; Harada, Tomoko; Deguchi, Tomohiro; Suzuki, Hajime; Watanuki, Yutaka.
In: Ornithological Science, Vol. 18, No. 1, 01.01.2019, p. 27-37.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands
AU - Kazama, Kentaro
AU - Harada, Tomoko
AU - Deguchi, Tomohiro
AU - Suzuki, Hajime
AU - Watanuki, Yutaka
PY - 2019/1/1
Y1 - 2019/1/1
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.
AB - 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.
KW - Searching behavior
UR - http://www.scopus.com/inward/record.url?scp=85061190750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061190750&partnerID=8YFLogxK
U2 - 10.2326/osj.18.27
DO - 10.2326/osj.18.27
M3 - Article
VL - 18
SP - 27
EP - 37
JO - Ornithological Science
JF - Ornithological Science
SN - 1347-0558
IS - 1
ER -