Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status.
Humpback whales migrate seasonally between high-latitude summer feeding grounds and low-latitude winter breeding grounds. Identification photographs of humpback whales were collected in the Hawaiian Islands between 1977 and 1995, and sighting histories were compiled for individuals. Analyses reveale...
Published in: | Behaviour |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Brill Academic Publishers
2003
|
Subjects: | |
Online Access: | https://doi.org/10.1163/156853903322589605 http://researchrepository.napier.ac.uk/id/eprint/1711 |
id |
ftnapieruniv:oai:repository@napier.ac.uk:267004 |
---|---|
record_format |
openpolar |
spelling |
ftnapieruniv:oai:repository@napier.ac.uk:267004 2023-05-15T16:36:07+02:00 Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. Craig, Alison S Herman, Louis M Gabriele, Christine M Pack, Adam A 2003-12-31 https://doi.org/10.1163/156853903322589605 http://researchrepository.napier.ac.uk/id/eprint/1711 unknown Brill Academic Publishers http://researchrepository.napier.ac.uk/id/eprint/1711 doi:https://doi.org/10.1163/156853903322589605 0005-7959 10.1163/156853903322589605 Humpback whales Migratory timing Winter breeding grounds Hawaiian waters Photographic survey Individual arrival times Statistical analysis 591.5 Behaviour 599.5 Cetacea & Sirenia QH Natural history QL Zoology Animal Behaviour Ecology Biodiversity and conservation Marine and Freshwater Biology Journal Article 2003 ftnapieruniv https://doi.org/10.1163/156853903322589605 2022-06-13T18:43:24Z Humpback whales migrate seasonally between high-latitude summer feeding grounds and low-latitude winter breeding grounds. Identification photographs of humpback whales were collected in the Hawaiian Islands between 1977 and 1995, and sighting histories were compiled for individuals. Analyses revealed that (a) mean dates of first identification were significantly earlier for juveniles and females with no calf than for males and females with a calf off the Big Island, and significantly earlier for juveniles than for females with no calf, males and females with a calf off Maui; and (b) mean dates of last identification were significantly earlier for juveniles and females with no calf than for males and females with a calf off the Big Island, and significantly earlier for females with no calf than for males and females with a calf off Maui. A within-subjects comparison showed that the date of first identification tended to be later for individual females in the years when they had a calf than in the years during which they had no calf. It was concluded that (a) migratory timing varies as a function of age, sex and reproductive status, (b) migratory timing is intimately connected with reproductive success and (c) migratory timing has important consequences for our understanding of humpback whale behaviour on the winter grounds. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae Edinburgh Napier Repository (Napier University Edinburgh) Pacific Behaviour 140 8-9 981 1001 |
institution |
Open Polar |
collection |
Edinburgh Napier Repository (Napier University Edinburgh) |
op_collection_id |
ftnapieruniv |
language |
unknown |
topic |
Humpback whales Migratory timing Winter breeding grounds Hawaiian waters Photographic survey Individual arrival times Statistical analysis 591.5 Behaviour 599.5 Cetacea & Sirenia QH Natural history QL Zoology Animal Behaviour Ecology Biodiversity and conservation Marine and Freshwater Biology |
spellingShingle |
Humpback whales Migratory timing Winter breeding grounds Hawaiian waters Photographic survey Individual arrival times Statistical analysis 591.5 Behaviour 599.5 Cetacea & Sirenia QH Natural history QL Zoology Animal Behaviour Ecology Biodiversity and conservation Marine and Freshwater Biology Craig, Alison S Herman, Louis M Gabriele, Christine M Pack, Adam A Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. |
topic_facet |
Humpback whales Migratory timing Winter breeding grounds Hawaiian waters Photographic survey Individual arrival times Statistical analysis 591.5 Behaviour 599.5 Cetacea & Sirenia QH Natural history QL Zoology Animal Behaviour Ecology Biodiversity and conservation Marine and Freshwater Biology |
description |
Humpback whales migrate seasonally between high-latitude summer feeding grounds and low-latitude winter breeding grounds. Identification photographs of humpback whales were collected in the Hawaiian Islands between 1977 and 1995, and sighting histories were compiled for individuals. Analyses revealed that (a) mean dates of first identification were significantly earlier for juveniles and females with no calf than for males and females with a calf off the Big Island, and significantly earlier for juveniles than for females with no calf, males and females with a calf off Maui; and (b) mean dates of last identification were significantly earlier for juveniles and females with no calf than for males and females with a calf off the Big Island, and significantly earlier for females with no calf than for males and females with a calf off Maui. A within-subjects comparison showed that the date of first identification tended to be later for individual females in the years when they had a calf than in the years during which they had no calf. It was concluded that (a) migratory timing varies as a function of age, sex and reproductive status, (b) migratory timing is intimately connected with reproductive success and (c) migratory timing has important consequences for our understanding of humpback whale behaviour on the winter grounds. |
format |
Article in Journal/Newspaper |
author |
Craig, Alison S Herman, Louis M Gabriele, Christine M Pack, Adam A |
author_facet |
Craig, Alison S Herman, Louis M Gabriele, Christine M Pack, Adam A |
author_sort |
Craig, Alison S |
title |
Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. |
title_short |
Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. |
title_full |
Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. |
title_fullStr |
Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. |
title_full_unstemmed |
Migratory timing of humpback whales (Megaptera novaeangliae) in the central North Pacific varies with age, sex and reproductive status. |
title_sort |
migratory timing of humpback whales (megaptera novaeangliae) in the central north pacific varies with age, sex and reproductive status. |
publisher |
Brill Academic Publishers |
publishDate |
2003 |
url |
https://doi.org/10.1163/156853903322589605 http://researchrepository.napier.ac.uk/id/eprint/1711 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_relation |
http://researchrepository.napier.ac.uk/id/eprint/1711 doi:https://doi.org/10.1163/156853903322589605 0005-7959 10.1163/156853903322589605 |
op_doi |
https://doi.org/10.1163/156853903322589605 |
container_title |
Behaviour |
container_volume |
140 |
container_issue |
8-9 |
container_start_page |
981 |
op_container_end_page |
1001 |
_version_ |
1766026427521564672 |