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Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea

Research output: Contribution to journalArticle

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Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea. / Baird, R W ; Borsani, J F ; Hanson, M B ; Tyack, P L .

In: Marine Ecology Progress Series, Vol. 237, 18.07.2002, p. 301-305.

Research output: Contribution to journalArticle

Harvard

Baird, RW, Borsani, JF, Hanson, MB & Tyack, PL 2002, 'Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea', Marine Ecology Progress Series, vol. 237, pp. 301-305.

APA

Baird, R. W., Borsani, J. F., Hanson, M. B., & Tyack, P. L. (2002). Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea. Marine Ecology Progress Series, 237, 301-305.

Vancouver

Baird RW, Borsani JF, Hanson MB, Tyack PL. Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea. Marine Ecology Progress Series. 2002 Jul 18;237:301-305.

Author

Baird, R W ; Borsani, J F ; Hanson, M B ; Tyack, P L . / Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea. In: Marine Ecology Progress Series. 2002 ; Vol. 237. pp. 301-305.

Bibtex - Download

@article{ad01afec7b634a4f983767da8a61b51b,
title = "Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea",
abstract = "Pilot whales Globicephala spp. have long been thought to be deep divers, yet little information is available on dive depths. During August 1999 we obtained detailed dive data from suction-cup-attached time-depth recorder/VHF radio tags deployed on 5 long-finned pilot whales G. melas. Pilot whales were tagged for short periods (average 5 h ind.(-1)) in deep (>2000 m) waters of the Ligurian Sea, off the NW coast of Italy. During the day all 5 whales spent their time in the top 16 m of the water column, and visible surface activities consisted primarily of rest and social behaviors. Tags remained attached after dark on 2 whales and shortly after sunset both whales made several deep dives (max. 360 and 648 m). Velocity on these deep dives was greater than during shallow dives either during the day or at night, suggesting that these deep dives function primarily for foraging. Our results confirm the supposition that long-finned pilot whales can dive deep, particularly within 2 h after sunset, which is the time that vertically migrating prey become more readily available as they move closer to the surface.",
author = "Baird, {R W} and Borsani, {J F} and Hanson, {M B} and Tyack, {P L}",
year = "2002",
month = "7",
day = "18",
language = "English",
volume = "237",
pages = "301--305",
journal = "Marine Ecology Progress Series",
issn = "0171-8630",
publisher = "Inter-Research",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Diving and night-time behavior of long-finned pilot whales in the Ligurian Sea

AU - Baird, R W

AU - Borsani, J F

AU - Hanson, M B

AU - Tyack, P L

PY - 2002/7/18

Y1 - 2002/7/18

N2 - Pilot whales Globicephala spp. have long been thought to be deep divers, yet little information is available on dive depths. During August 1999 we obtained detailed dive data from suction-cup-attached time-depth recorder/VHF radio tags deployed on 5 long-finned pilot whales G. melas. Pilot whales were tagged for short periods (average 5 h ind.(-1)) in deep (>2000 m) waters of the Ligurian Sea, off the NW coast of Italy. During the day all 5 whales spent their time in the top 16 m of the water column, and visible surface activities consisted primarily of rest and social behaviors. Tags remained attached after dark on 2 whales and shortly after sunset both whales made several deep dives (max. 360 and 648 m). Velocity on these deep dives was greater than during shallow dives either during the day or at night, suggesting that these deep dives function primarily for foraging. Our results confirm the supposition that long-finned pilot whales can dive deep, particularly within 2 h after sunset, which is the time that vertically migrating prey become more readily available as they move closer to the surface.

AB - Pilot whales Globicephala spp. have long been thought to be deep divers, yet little information is available on dive depths. During August 1999 we obtained detailed dive data from suction-cup-attached time-depth recorder/VHF radio tags deployed on 5 long-finned pilot whales G. melas. Pilot whales were tagged for short periods (average 5 h ind.(-1)) in deep (>2000 m) waters of the Ligurian Sea, off the NW coast of Italy. During the day all 5 whales spent their time in the top 16 m of the water column, and visible surface activities consisted primarily of rest and social behaviors. Tags remained attached after dark on 2 whales and shortly after sunset both whales made several deep dives (max. 360 and 648 m). Velocity on these deep dives was greater than during shallow dives either during the day or at night, suggesting that these deep dives function primarily for foraging. Our results confirm the supposition that long-finned pilot whales can dive deep, particularly within 2 h after sunset, which is the time that vertically migrating prey become more readily available as they move closer to the surface.

M3 - Article

VL - 237

SP - 301

EP - 305

JO - Marine Ecology Progress Series

JF - Marine Ecology Progress Series

SN - 0171-8630

ER -

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ID: 21300314

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