Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.

This study investigated the pattern and scale of distribution, movements and range use of the northern bottlenose whale Hyperoodon ampullatus above a submarine canyon, the Gully, off eastern Canada between 1988 and 1998. Locations and individual identification photographs were collected during encou...

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Main Authors: Hooker, Sascha Kate, Whitehead, H, Gowans, S, Baird, RW
Format: Article in Journal/Newspaper
Language:English
Published: 2002
Subjects:
Online Access:https://risweb.st-andrews.ac.uk/portal/en/researchoutput/fluctuations-in-distribution-and-patterns-of-individual-range-use-of-northern-bottlenose-whales(2b7c321c-2a65-427d-9b48-7b8e4eb3241b).html
http://www.scopus.com/inward/record.url?scp=0037059626&partnerID=8YFLogxK
http://www.int-res.com/articles/meps/225/m225p287.pdf
id ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/2b7c321c-2a65-427d-9b48-7b8e4eb3241b
record_format openpolar
spelling ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/2b7c321c-2a65-427d-9b48-7b8e4eb3241b 2023-05-15T16:36:26+02:00 Fluctuations in distribution and patterns of individual range use of northern bottlenose whales. Hooker, Sascha Kate Whitehead, H Gowans, S Baird, RW 2002 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/fluctuations-in-distribution-and-patterns-of-individual-range-use-of-northern-bottlenose-whales(2b7c321c-2a65-427d-9b48-7b8e4eb3241b).html http://www.scopus.com/inward/record.url?scp=0037059626&partnerID=8YFLogxK http://www.int-res.com/articles/meps/225/m225p287.pdf eng eng info:eu-repo/semantics/restrictedAccess Hooker , S K , Whitehead , H , Gowans , S & Baird , RW 2002 , ' Fluctuations in distribution and patterns of individual range use of northern bottlenose whales. ' , Marine Ecology Progress Series , vol. 225 , pp. 287-297 . foraging ecology cetacean submarine canyon movements range territoriality HYPEROODON-AMPULLATUS NOSED WHALE NOVA-SCOTIA ECOLOGY BEHAVIOR EVOLUTION MOVEMENT DOLPHINS article 2002 ftunstandrewcris 2021-12-26T14:13:01Z This study investigated the pattern and scale of distribution, movements and range use of the northern bottlenose whale Hyperoodon ampullatus above a submarine canyon, the Gully, off eastern Canada between 1988 and 1998. Locations and individual identification photographs were collected during encounters with whales. Whales showed a discrete distribution within the canyon associated with water depth (500 to 1500 m) and relatively steep topography. Encounter rate and distribution showed some variation between years. Changes in distribution were observed toward the north or south of the canyon, probably a consequence of changes in prey distribution. Individual whales within the canyon displaced 4 to 5 km over 24 h, with negligible further increase in displacement over time scales up to 20 d (their approximate residency period). Short-term VHF radio-tracking of 5 individuals provided an independent source of movement data, showing displacements of approximately 2 km in 1 h and 5 to 10 km in 1 d. The relative lack of movement observed for these whales supports the hypothesis that the canyon contains a profitable and localized food source. Movements of whales best fit a model of short-term residence within ranges of approximately 25 km(2), although the range size of mature males was smaller than that of females and immature males. Photo-resightings were also used to investigate variation in the positions of individual whales within the Gully, Within years, individuals showed some separation of ranges associated with periods of high whale abundance, but there was no separation between different age-sex classes, Between years, mature males showed consistent spatial orientations relative to each other, suggesting preferred locations possibly related to mating opportunities. Article in Journal/Newspaper hyperoodon ampullatus Northern bottlenose whale University of St Andrews: Research Portal Canada The Gully ENVELOPE(-57.731,-57.731,51.567,51.567)
institution Open Polar
collection University of St Andrews: Research Portal
op_collection_id ftunstandrewcris
language English
topic foraging ecology
cetacean
submarine canyon
movements
range
territoriality
HYPEROODON-AMPULLATUS
NOSED WHALE
NOVA-SCOTIA
ECOLOGY
BEHAVIOR
EVOLUTION
MOVEMENT
DOLPHINS
spellingShingle foraging ecology
cetacean
submarine canyon
movements
range
territoriality
HYPEROODON-AMPULLATUS
NOSED WHALE
NOVA-SCOTIA
ECOLOGY
BEHAVIOR
EVOLUTION
MOVEMENT
DOLPHINS
Hooker, Sascha Kate
Whitehead, H
Gowans, S
Baird, RW
Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
topic_facet foraging ecology
cetacean
submarine canyon
movements
range
territoriality
HYPEROODON-AMPULLATUS
NOSED WHALE
NOVA-SCOTIA
ECOLOGY
BEHAVIOR
EVOLUTION
MOVEMENT
DOLPHINS
description This study investigated the pattern and scale of distribution, movements and range use of the northern bottlenose whale Hyperoodon ampullatus above a submarine canyon, the Gully, off eastern Canada between 1988 and 1998. Locations and individual identification photographs were collected during encounters with whales. Whales showed a discrete distribution within the canyon associated with water depth (500 to 1500 m) and relatively steep topography. Encounter rate and distribution showed some variation between years. Changes in distribution were observed toward the north or south of the canyon, probably a consequence of changes in prey distribution. Individual whales within the canyon displaced 4 to 5 km over 24 h, with negligible further increase in displacement over time scales up to 20 d (their approximate residency period). Short-term VHF radio-tracking of 5 individuals provided an independent source of movement data, showing displacements of approximately 2 km in 1 h and 5 to 10 km in 1 d. The relative lack of movement observed for these whales supports the hypothesis that the canyon contains a profitable and localized food source. Movements of whales best fit a model of short-term residence within ranges of approximately 25 km(2), although the range size of mature males was smaller than that of females and immature males. Photo-resightings were also used to investigate variation in the positions of individual whales within the Gully, Within years, individuals showed some separation of ranges associated with periods of high whale abundance, but there was no separation between different age-sex classes, Between years, mature males showed consistent spatial orientations relative to each other, suggesting preferred locations possibly related to mating opportunities.
format Article in Journal/Newspaper
author Hooker, Sascha Kate
Whitehead, H
Gowans, S
Baird, RW
author_facet Hooker, Sascha Kate
Whitehead, H
Gowans, S
Baird, RW
author_sort Hooker, Sascha Kate
title Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
title_short Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
title_full Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
title_fullStr Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
title_full_unstemmed Fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
title_sort fluctuations in distribution and patterns of individual range use of northern bottlenose whales.
publishDate 2002
url https://risweb.st-andrews.ac.uk/portal/en/researchoutput/fluctuations-in-distribution-and-patterns-of-individual-range-use-of-northern-bottlenose-whales(2b7c321c-2a65-427d-9b48-7b8e4eb3241b).html
http://www.scopus.com/inward/record.url?scp=0037059626&partnerID=8YFLogxK
http://www.int-res.com/articles/meps/225/m225p287.pdf
long_lat ENVELOPE(-57.731,-57.731,51.567,51.567)
geographic Canada
The Gully
geographic_facet Canada
The Gully
genre hyperoodon ampullatus
Northern bottlenose whale
genre_facet hyperoodon ampullatus
Northern bottlenose whale
op_source Hooker , S K , Whitehead , H , Gowans , S & Baird , RW 2002 , ' Fluctuations in distribution and patterns of individual range use of northern bottlenose whales. ' , Marine Ecology Progress Series , vol. 225 , pp. 287-297 .
op_rights info:eu-repo/semantics/restrictedAccess
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