Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves
We investigated whether calf age and calf size influence habitat choice by humpback whale motherecalf pairs in their breeding grounds. During 1997e2008, we conducted focal follows of motherecalf pairs in Hawaiian waters. Tail-fluke identification photographs and calf lengths (measured through video-...
Published in: | Animal Behaviour |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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Elsevier
2017
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Online Access: | https://doi.org/10.1016/j.anbehav.2017.09.012 https://napier-repository.worktribe.com/file/1005201/1/Habitat%20preferences%20by%20individual%20humpback%20whale%20mothers%20in%20the%20Hawaiian%20breeding%20grounds%20vary%20with%20the%20age%20and%20size%20of%20their%20calves http://researchrepository.napier.ac.uk/Output/1005201 |
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ftnapieruniv:oai:repository@napier.ac.uk:1005201 2024-04-28T08:23:22+00:00 Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves Pack, Adam A. Herman, Louis M. Craig, Alison S. Spitz, Scott S. Waterman, James O. Herman, Elia Y.K. Deakos, Mark H. Hakala, Siri Lowe, Carley 2017-11-14 https://doi.org/10.1016/j.anbehav.2017.09.012 https://napier-repository.worktribe.com/file/1005201/1/Habitat%20preferences%20by%20individual%20humpback%20whale%20mothers%20in%20the%20Hawaiian%20breeding%20grounds%20vary%20with%20the%20age%20and%20size%20of%20their%20calves http://researchrepository.napier.ac.uk/Output/1005201 unknown Elsevier http://researchrepository.napier.ac.uk/Output/1005201 doi:https://doi.org/10.1016/j.anbehav.2017.09.012 https://napier-repository.worktribe.com/file/1005201/1/Habitat%20preferences%20by%20individual%20humpback%20whale%20mothers%20in%20the%20Hawaiian%20breeding%20grounds%20vary%20with%20the%20age%20and%20size%20of%20their%20calves 0003-3472 10.1016/j.anbehav.2017.09.012 openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Calf size habitat use humpback whale mother-calf ocean depth residency sea-bed terrain 591.5 Behaviour QH301 Biology Animal Behaviour Culture and Communities Animal and Plant Science Research Group Journal Article publishedVersion acceptedVersion 2017 ftnapieruniv https://doi.org/10.1016/j.anbehav.2017.09.012 2024-04-09T23:45:06Z We investigated whether calf age and calf size influence habitat choice by humpback whale motherecalf pairs in their breeding grounds. During 1997e2008, we conducted focal follows of motherecalf pairs in Hawaiian waters. Tail-fluke identification photographs and calf lengths (measured through video-grammetry) were obtained. Water depth and sea-bed terrain type were derived from GPS data. Identification photographs were matched so that the habitat choices could be established within breeding seasons. Across 72 motherecalf pairs resighted over various intervals within a breeding season, magnitude of depth change between initial and final sightings increased significantly with resighting interval. There was a significant increase from initial depth to final depth for relatively long resighting intervals (27e51 days), but no significant difference for relatively short resighting intervals (2e26 days). Although there was no preference for sea-bed terrain type by motherecalf pairs at their initial sighting, there was a preference for rugged terrain at their final resighting. A resource selection model indicated that the relative probability of a location being used by a motherecalf pair increased (as a function of water depth and rugged sea-bed terrain type) from initial to final sighting; a finding supported by subsequent tests of habitat preference versus availability. For 96 measured calves, calf length and water depth were positively correlated, even when ordinal day of measurement was controlled for statistically; a finding confirmed by a general linear model that simultaneously investigated the relationship between water depth, sea-bed terrain type, number of escorts, ordinal day and calf size. Thus, both calf age and size influence habitat choice by motherecalf pairs in their breeding grounds. The movement of mothers and their maturing calves into deeper waters where they favour rugged sea-bed terrain appears to be part of a suite of behavioural changes during the pre-migratory phase of residency in the ... Article in Journal/Newspaper Humpback Whale Edinburgh Napier Repository (Napier University Edinburgh) Animal Behaviour 133 131 144 |
institution |
Open Polar |
collection |
Edinburgh Napier Repository (Napier University Edinburgh) |
op_collection_id |
ftnapieruniv |
language |
unknown |
topic |
Calf size habitat use humpback whale mother-calf ocean depth residency sea-bed terrain 591.5 Behaviour QH301 Biology Animal Behaviour Culture and Communities Animal and Plant Science Research Group |
spellingShingle |
Calf size habitat use humpback whale mother-calf ocean depth residency sea-bed terrain 591.5 Behaviour QH301 Biology Animal Behaviour Culture and Communities Animal and Plant Science Research Group Pack, Adam A. Herman, Louis M. Craig, Alison S. Spitz, Scott S. Waterman, James O. Herman, Elia Y.K. Deakos, Mark H. Hakala, Siri Lowe, Carley Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves |
topic_facet |
Calf size habitat use humpback whale mother-calf ocean depth residency sea-bed terrain 591.5 Behaviour QH301 Biology Animal Behaviour Culture and Communities Animal and Plant Science Research Group |
description |
We investigated whether calf age and calf size influence habitat choice by humpback whale motherecalf pairs in their breeding grounds. During 1997e2008, we conducted focal follows of motherecalf pairs in Hawaiian waters. Tail-fluke identification photographs and calf lengths (measured through video-grammetry) were obtained. Water depth and sea-bed terrain type were derived from GPS data. Identification photographs were matched so that the habitat choices could be established within breeding seasons. Across 72 motherecalf pairs resighted over various intervals within a breeding season, magnitude of depth change between initial and final sightings increased significantly with resighting interval. There was a significant increase from initial depth to final depth for relatively long resighting intervals (27e51 days), but no significant difference for relatively short resighting intervals (2e26 days). Although there was no preference for sea-bed terrain type by motherecalf pairs at their initial sighting, there was a preference for rugged terrain at their final resighting. A resource selection model indicated that the relative probability of a location being used by a motherecalf pair increased (as a function of water depth and rugged sea-bed terrain type) from initial to final sighting; a finding supported by subsequent tests of habitat preference versus availability. For 96 measured calves, calf length and water depth were positively correlated, even when ordinal day of measurement was controlled for statistically; a finding confirmed by a general linear model that simultaneously investigated the relationship between water depth, sea-bed terrain type, number of escorts, ordinal day and calf size. Thus, both calf age and size influence habitat choice by motherecalf pairs in their breeding grounds. The movement of mothers and their maturing calves into deeper waters where they favour rugged sea-bed terrain appears to be part of a suite of behavioural changes during the pre-migratory phase of residency in the ... |
format |
Article in Journal/Newspaper |
author |
Pack, Adam A. Herman, Louis M. Craig, Alison S. Spitz, Scott S. Waterman, James O. Herman, Elia Y.K. Deakos, Mark H. Hakala, Siri Lowe, Carley |
author_facet |
Pack, Adam A. Herman, Louis M. Craig, Alison S. Spitz, Scott S. Waterman, James O. Herman, Elia Y.K. Deakos, Mark H. Hakala, Siri Lowe, Carley |
author_sort |
Pack, Adam A. |
title |
Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves |
title_short |
Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves |
title_full |
Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves |
title_fullStr |
Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves |
title_full_unstemmed |
Habitat preferences by individual humpback whale mothers in the Hawaiian breeding grounds vary with the age and size of their calves |
title_sort |
habitat preferences by individual humpback whale mothers in the hawaiian breeding grounds vary with the age and size of their calves |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://doi.org/10.1016/j.anbehav.2017.09.012 https://napier-repository.worktribe.com/file/1005201/1/Habitat%20preferences%20by%20individual%20humpback%20whale%20mothers%20in%20the%20Hawaiian%20breeding%20grounds%20vary%20with%20the%20age%20and%20size%20of%20their%20calves http://researchrepository.napier.ac.uk/Output/1005201 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_relation |
http://researchrepository.napier.ac.uk/Output/1005201 doi:https://doi.org/10.1016/j.anbehav.2017.09.012 https://napier-repository.worktribe.com/file/1005201/1/Habitat%20preferences%20by%20individual%20humpback%20whale%20mothers%20in%20the%20Hawaiian%20breeding%20grounds%20vary%20with%20the%20age%20and%20size%20of%20their%20calves 0003-3472 10.1016/j.anbehav.2017.09.012 |
op_rights |
openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1016/j.anbehav.2017.09.012 |
container_title |
Animal Behaviour |
container_volume |
133 |
container_start_page |
131 |
op_container_end_page |
144 |
_version_ |
1797584362173104128 |