Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae )
Results from a large-scale, capture–recapture study of humpback whales Megaptera novaeangliae in the North Atlantic show that migration timing is influenced by feeding ground origin. No significant differences were observed in the number of individuals from any feeding area that were re-sighted in t...
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ftunivnebraskali:oai:digitalcommons.unl.edu:usdeptcommercepub-1158 2023-11-12T04:17:59+01:00 Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) Stevick, Peter T. Allen, Judith Berube, Martine Clapham, Phillip J. Katona, Steven K. Larsen, Finn Lien, Jon Mattila, David K. Palsbøll, Per J. Robbins, Jooke Sigurjonsson, Johann Smith, Tim D. Øien, Nils Hammond, Philip S. 2003-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/usdeptcommercepub/164 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1158/viewcontent/Clapham_JZL_2003_Segregation_migration.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usdeptcommercepub/164 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1158/viewcontent/Clapham_JZL_2003_Segregation_migration.pdf Publications, Agencies and Staff of the U.S. Department of Commerce Environmental Sciences text 2003 ftunivnebraskali 2023-10-30T10:43:04Z Results from a large-scale, capture–recapture study of humpback whales Megaptera novaeangliae in the North Atlantic show that migration timing is influenced by feeding ground origin. No significant differences were observed in the number of individuals from any feeding area that were re-sighted in the common breeding area in the West Indies. However, there was a relationship between the proportion (logit transformed) of West Indies sightings and longitude (r2 = 0.97, F1,3 = 98.27, P = 0.0022) suggesting that individuals feeding farther to the east are less likely to winter in the West Indies. A relationship was also detected between sighting date in the West Indies and feeding area. Mean sighting dates in the West Indies for individuals identified in the Gulf of Maine and eastern Canada were significantly earlier than those for animals identified in Greenland, Iceland and Norway (9.97 days, t179 = 3.53, P = 0.00054). There was also evidence for sexual segregation in migration; males were seen earlier on the breeding ground than were females (6.63 days, t105 = 1.98, P = 0.050). This pattern was consistently observed for animals from all feeding areas; a combined model showed a significant effect for both sex (F1 = 5.942, P = 0.017) and feeding area (F3 =4.756, P=0.0038). The temporal difference in occupancy of the West Indies between individuals from different feeding areas, coupled with sexual differences in migratory patterns, presents the possibility that there are reduced mating opportunities between individuals from different high latitude areas. Text Greenland Iceland Megaptera novaeangliae North Atlantic University of Nebraska-Lincoln: DigitalCommons@UNL Canada Greenland Norway |
institution |
Open Polar |
collection |
University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Environmental Sciences |
spellingShingle |
Environmental Sciences Stevick, Peter T. Allen, Judith Berube, Martine Clapham, Phillip J. Katona, Steven K. Larsen, Finn Lien, Jon Mattila, David K. Palsbøll, Per J. Robbins, Jooke Sigurjonsson, Johann Smith, Tim D. Øien, Nils Hammond, Philip S. Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) |
topic_facet |
Environmental Sciences |
description |
Results from a large-scale, capture–recapture study of humpback whales Megaptera novaeangliae in the North Atlantic show that migration timing is influenced by feeding ground origin. No significant differences were observed in the number of individuals from any feeding area that were re-sighted in the common breeding area in the West Indies. However, there was a relationship between the proportion (logit transformed) of West Indies sightings and longitude (r2 = 0.97, F1,3 = 98.27, P = 0.0022) suggesting that individuals feeding farther to the east are less likely to winter in the West Indies. A relationship was also detected between sighting date in the West Indies and feeding area. Mean sighting dates in the West Indies for individuals identified in the Gulf of Maine and eastern Canada were significantly earlier than those for animals identified in Greenland, Iceland and Norway (9.97 days, t179 = 3.53, P = 0.00054). There was also evidence for sexual segregation in migration; males were seen earlier on the breeding ground than were females (6.63 days, t105 = 1.98, P = 0.050). This pattern was consistently observed for animals from all feeding areas; a combined model showed a significant effect for both sex (F1 = 5.942, P = 0.017) and feeding area (F3 =4.756, P=0.0038). The temporal difference in occupancy of the West Indies between individuals from different feeding areas, coupled with sexual differences in migratory patterns, presents the possibility that there are reduced mating opportunities between individuals from different high latitude areas. |
format |
Text |
author |
Stevick, Peter T. Allen, Judith Berube, Martine Clapham, Phillip J. Katona, Steven K. Larsen, Finn Lien, Jon Mattila, David K. Palsbøll, Per J. Robbins, Jooke Sigurjonsson, Johann Smith, Tim D. Øien, Nils Hammond, Philip S. |
author_facet |
Stevick, Peter T. Allen, Judith Berube, Martine Clapham, Phillip J. Katona, Steven K. Larsen, Finn Lien, Jon Mattila, David K. Palsbøll, Per J. Robbins, Jooke Sigurjonsson, Johann Smith, Tim D. Øien, Nils Hammond, Philip S. |
author_sort |
Stevick, Peter T. |
title |
Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) |
title_short |
Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) |
title_full |
Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) |
title_fullStr |
Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) |
title_full_unstemmed |
Segregation of migration by feeding ground origin in North Atlantic humpback whales ( Megaptera novaeangliae ) |
title_sort |
segregation of migration by feeding ground origin in north atlantic humpback whales ( megaptera novaeangliae ) |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2003 |
url |
https://digitalcommons.unl.edu/usdeptcommercepub/164 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1158/viewcontent/Clapham_JZL_2003_Segregation_migration.pdf |
geographic |
Canada Greenland Norway |
geographic_facet |
Canada Greenland Norway |
genre |
Greenland Iceland Megaptera novaeangliae North Atlantic |
genre_facet |
Greenland Iceland Megaptera novaeangliae North Atlantic |
op_source |
Publications, Agencies and Staff of the U.S. Department of Commerce |
op_relation |
https://digitalcommons.unl.edu/usdeptcommercepub/164 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1158/viewcontent/Clapham_JZL_2003_Segregation_migration.pdf |
_version_ |
1782334725519572992 |