Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine
A study of 518 individually identified humpback whales (Megaptera novaeangliae) in the southern Gulf of Maine between 1979 and 1988 showed high rates of both within-season occurrence and annual return. On average, 77.3% of whales were resighted on more than 1 day during the year (maximum 83 days), w...
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1993
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crcansciencepubl:10.1139/z93-063 2024-09-30T14:38:25+00:00 Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine Clapham, Phillip J. Baraff, Lisa S. Carlson, Carole A. Christian, Margaret A. Mattila, David K. Mayo, Charles A. Murphy, Margaret A. Pittman, Sharon 1993 http://dx.doi.org/10.1139/z93-063 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-063 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 71, issue 2, page 440-443 ISSN 0008-4301 1480-3283 journal-article 1993 crcansciencepubl https://doi.org/10.1139/z93-063 2024-09-05T04:11:16Z A study of 518 individually identified humpback whales (Megaptera novaeangliae) in the southern Gulf of Maine between 1979 and 1988 showed high rates of both within-season occurrence and annual return. On average, 77.3% of whales were resighted on more than 1 day during the year (maximum 83 days), with occupancies ranging from 1 to 324 days (mean 88.1 days). The mean rate of return of individuals in consecutive years was 73.2% (range 59.1–87.4%), and the majority of whales were still being resighted up to 10 years later. Only 13 humpbacks were recorded during 50 midwinter surveys. Variation in the occurrence of individuals appears to be related to variability in the abundance of prey and perhaps to regional preferences. Article in Journal/Newspaper Megaptera novaeangliae Canadian Science Publishing Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Canadian Journal of Zoology 71 2 440 443 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
A study of 518 individually identified humpback whales (Megaptera novaeangliae) in the southern Gulf of Maine between 1979 and 1988 showed high rates of both within-season occurrence and annual return. On average, 77.3% of whales were resighted on more than 1 day during the year (maximum 83 days), with occupancies ranging from 1 to 324 days (mean 88.1 days). The mean rate of return of individuals in consecutive years was 73.2% (range 59.1–87.4%), and the majority of whales were still being resighted up to 10 years later. Only 13 humpbacks were recorded during 50 midwinter surveys. Variation in the occurrence of individuals appears to be related to variability in the abundance of prey and perhaps to regional preferences. |
format |
Article in Journal/Newspaper |
author |
Clapham, Phillip J. Baraff, Lisa S. Carlson, Carole A. Christian, Margaret A. Mattila, David K. Mayo, Charles A. Murphy, Margaret A. Pittman, Sharon |
spellingShingle |
Clapham, Phillip J. Baraff, Lisa S. Carlson, Carole A. Christian, Margaret A. Mattila, David K. Mayo, Charles A. Murphy, Margaret A. Pittman, Sharon Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine |
author_facet |
Clapham, Phillip J. Baraff, Lisa S. Carlson, Carole A. Christian, Margaret A. Mattila, David K. Mayo, Charles A. Murphy, Margaret A. Pittman, Sharon |
author_sort |
Clapham, Phillip J. |
title |
Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine |
title_short |
Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine |
title_full |
Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine |
title_fullStr |
Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine |
title_full_unstemmed |
Seasonal occurrence and annual return of humpback whales, Megaptera novaeangliae, in the southern Gulf of Maine |
title_sort |
seasonal occurrence and annual return of humpback whales, megaptera novaeangliae, in the southern gulf of maine |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/z93-063 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-063 |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Midwinter |
geographic_facet |
Midwinter |
genre |
Megaptera novaeangliae |
genre_facet |
Megaptera novaeangliae |
op_source |
Canadian Journal of Zoology volume 71, issue 2, page 440-443 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z93-063 |
container_title |
Canadian Journal of Zoology |
container_volume |
71 |
container_issue |
2 |
container_start_page |
440 |
op_container_end_page |
443 |
_version_ |
1811641063758102528 |