Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis
ABSTRACT Why animals migrate is a fundamental question in biology. While the adaptive significance of some animal migrations is well understood (e.g., to find food, to pursue more‐favorable habitats, to spawn, or to give birth), others remain unknown. The adaptive significance of whale migration, fo...
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Wiley
2025-02-01
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| Series: | Ecology and Evolution |
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| Online Access: | https://doi.org/10.1002/ece3.70921 |
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| author | K. J. Lefort L. Storrie N. E. Hussey S. H. Ferguson |
| author_facet | K. J. Lefort L. Storrie N. E. Hussey S. H. Ferguson |
| author_sort | K. J. Lefort |
| collection | DOAJ |
| description | ABSTRACT Why animals migrate is a fundamental question in biology. While the adaptive significance of some animal migrations is well understood (e.g., to find food, to pursue more‐favorable habitats, to spawn, or to give birth), others remain unknown. The adaptive significance of whale migration, for example, is unresolved and multiple hypotheses have been proposed to explain it. One recently proposed hypothesis that challenges the long‐standing “feeding‐breeding” whale migration model is a “feeding‐molting” model, where whales undertake latitudinal migrations to warmer waters to molt skin. In July 2019, we attached satellite‐tracking tags to northern bottlenose whales (Hyperoodon ampullatus) in the Canadian Arctic. One of these tagged whales completed a round‐trip movement between the Arctic and the temperate western North Atlantic, traveling 7281 km in 67 days (and spanning 27° of latitude). The whale was tagged in sea‐surface temperatures of ~4°C, but migrated south, reaching ~23°C surface waters, where it remained for 7 days before returning to the Arctic. The whale's occupancy of warm water was accompanied by a distinct shift in dive behavior, remaining near the ocean's surface. Four other tagged whales initiated similar long‐distance movements. We conclude that feeding or breeding were unlikely reasons for this movement and that northern bottlenose whales migrate to warmer latitudes to molt skin. |
| format | Article |
| id | doaj-art-db41487dd45a4f6cae4471b8cfe2d81f |
| institution | Matheson Library |
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| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
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| series | Ecology and Evolution |
| spelling | doaj-art-db41487dd45a4f6cae4471b8cfe2d81f2025-07-23T08:27:17ZengWileyEcology and Evolution2045-77582025-02-01152n/an/a10.1002/ece3.70921Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration HypothesisK. J. Lefort0L. Storrie1N. E. Hussey2S. H. Ferguson3Fisheries and Oceans Canada Northwest Atlantic Fisheries Centre St. John's Newfoundland and Labrador CanadaDepartment of Environment and Geography University of Manitoba Winnipeg Manitoba CanadaDepartment of Integrative Biology University of Windsor Windsor Ontario CanadaDepartment of Biological Sciences University of Manitoba Winnipeg Manitoba CanadaABSTRACT Why animals migrate is a fundamental question in biology. While the adaptive significance of some animal migrations is well understood (e.g., to find food, to pursue more‐favorable habitats, to spawn, or to give birth), others remain unknown. The adaptive significance of whale migration, for example, is unresolved and multiple hypotheses have been proposed to explain it. One recently proposed hypothesis that challenges the long‐standing “feeding‐breeding” whale migration model is a “feeding‐molting” model, where whales undertake latitudinal migrations to warmer waters to molt skin. In July 2019, we attached satellite‐tracking tags to northern bottlenose whales (Hyperoodon ampullatus) in the Canadian Arctic. One of these tagged whales completed a round‐trip movement between the Arctic and the temperate western North Atlantic, traveling 7281 km in 67 days (and spanning 27° of latitude). The whale was tagged in sea‐surface temperatures of ~4°C, but migrated south, reaching ~23°C surface waters, where it remained for 7 days before returning to the Arctic. The whale's occupancy of warm water was accompanied by a distinct shift in dive behavior, remaining near the ocean's surface. Four other tagged whales initiated similar long‐distance movements. We conclude that feeding or breeding were unlikely reasons for this movement and that northern bottlenose whales migrate to warmer latitudes to molt skin.https://doi.org/10.1002/ece3.70921cetaceanHyperoodon ampullatusmigrationnorthern bottlenose whaleskin molttelemetry |
| spellingShingle | K. J. Lefort L. Storrie N. E. Hussey S. H. Ferguson Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis Ecology and Evolution cetacean Hyperoodon ampullatus migration northern bottlenose whale skin molt telemetry |
| title | Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis |
| title_full | Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis |
| title_fullStr | Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis |
| title_full_unstemmed | Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis |
| title_short | Aseasonal Migration of a Northern Bottlenose Whale Provides Support for the Skin Molt Migration Hypothesis |
| title_sort | aseasonal migration of a northern bottlenose whale provides support for the skin molt migration hypothesis |
| topic | cetacean Hyperoodon ampullatus migration northern bottlenose whale skin molt telemetry |
| url | https://doi.org/10.1002/ece3.70921 |
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