Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean
Abstract Living gray whales (Eschrichtius robustus) are key consumers in benthic communities of the North Pacific Ocean. Gray whales, however, also inhabited the North Atlantic Ocean until recent historical times (~ 1600 AD), leaving open questions about their historical ecology in nearshore communi...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | http://hdl.handle.net/10088/21913 https://doi.org/10.1016/j.palaeo.2013.10.005 |
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ftsmithonian:oai:repository.si.edu:10088/21913 2023-05-15T16:08:19+02:00 Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean Noakes, Scott E. Pyenson, Nicholas D. McFall, Greg 2013 application/pdf http://hdl.handle.net/10088/21913 https://doi.org/10.1016/j.palaeo.2013.10.005 unknown Palaeogeography palaeoclimatology palaeoecology Noakes, Scott E., Pyenson, Nicholas D., and McFall, Greg. 2013. " Late Pleistocene gray whales (Eschrichtius robustus) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean ." Palaeogeography palaeoclimatology palaeoecology . 392:502–509. https://doi.org/10.1016/j.palaeo.2013.10.005 0031-0182 http://hdl.handle.net/10088/21913 117425 doi:10.1016/j.palaeo.2013.10.005 Journal Article 2013 ftsmithonian https://doi.org/10.1016/j.palaeo.2013.10.005 2020-09-09T18:33:45Z Abstract Living gray whales (Eschrichtius robustus) are key consumers in benthic communities of the North Pacific Ocean. Gray whales, however, also inhabited the North Atlantic Ocean until recent historical times (~ 1600 AD), leaving open questions about their historical ecology in nearshore communities of this basin. Here we report the discovery of fossil remains from two individual gray whales recovered from underwater excavations at separate localities of JY Reef, an offshore reef situated approximately 32 kilometers (km) offshore of St. Catherine's Island, Georgia, U.S.A. Both mandibles are diagnostic to the living Eschrichtius robustus. Radiometric dating of shells from JY Reef suggests an approximate age range of these two specimens between 42 to 30 thousand years before present (ka). Morphological measurements of the preserved elements indicate that both of the mandibles likely belonged to immature and possibly yearling individuals. Collectively, these findings are among the oldest occurrences of gray whales in the North Atlantic basin, and their presence at temperate latitudes provides limited support for the hypothesis that Atlantic gray whales used a southerly breeding area at the end of a migratory pathway, by analog with lagoonal breeding environments of Baja California, Mexico, for the extant California gray whales, and the breeding areas for extant North Atlantic right whales (Eubalaena glacialis) off the Georgia coast today. Stronger support for this latter contention may stem from future fossil discoveries in the region, as well as ancillary lines of evidence, such as the remains of species-specific ectoparasites and/or ancient DNA (aDNA). NH-Paleobiology NMNH Peer-reviewed Article in Journal/Newspaper Eubalaena glacialis North Atlantic Unknown Baja Pacific Palaeogeography, Palaeoclimatology, Palaeoecology 392 502 509 |
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Open Polar |
collection |
Unknown |
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ftsmithonian |
language |
unknown |
description |
Abstract Living gray whales (Eschrichtius robustus) are key consumers in benthic communities of the North Pacific Ocean. Gray whales, however, also inhabited the North Atlantic Ocean until recent historical times (~ 1600 AD), leaving open questions about their historical ecology in nearshore communities of this basin. Here we report the discovery of fossil remains from two individual gray whales recovered from underwater excavations at separate localities of JY Reef, an offshore reef situated approximately 32 kilometers (km) offshore of St. Catherine's Island, Georgia, U.S.A. Both mandibles are diagnostic to the living Eschrichtius robustus. Radiometric dating of shells from JY Reef suggests an approximate age range of these two specimens between 42 to 30 thousand years before present (ka). Morphological measurements of the preserved elements indicate that both of the mandibles likely belonged to immature and possibly yearling individuals. Collectively, these findings are among the oldest occurrences of gray whales in the North Atlantic basin, and their presence at temperate latitudes provides limited support for the hypothesis that Atlantic gray whales used a southerly breeding area at the end of a migratory pathway, by analog with lagoonal breeding environments of Baja California, Mexico, for the extant California gray whales, and the breeding areas for extant North Atlantic right whales (Eubalaena glacialis) off the Georgia coast today. Stronger support for this latter contention may stem from future fossil discoveries in the region, as well as ancillary lines of evidence, such as the remains of species-specific ectoparasites and/or ancient DNA (aDNA). NH-Paleobiology NMNH Peer-reviewed |
format |
Article in Journal/Newspaper |
author |
Noakes, Scott E. Pyenson, Nicholas D. McFall, Greg |
spellingShingle |
Noakes, Scott E. Pyenson, Nicholas D. McFall, Greg Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean |
author_facet |
Noakes, Scott E. Pyenson, Nicholas D. McFall, Greg |
author_sort |
Noakes, Scott E. |
title |
Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean |
title_short |
Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean |
title_full |
Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean |
title_fullStr |
Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean |
title_full_unstemmed |
Late Pleistocene gray whales ( Eschrichtius robustus ) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean |
title_sort |
late pleistocene gray whales ( eschrichtius robustus ) offshore georgia, u.s.a., and the antiquity of gray whale migration in the north atlantic ocean |
publishDate |
2013 |
url |
http://hdl.handle.net/10088/21913 https://doi.org/10.1016/j.palaeo.2013.10.005 |
geographic |
Baja Pacific |
geographic_facet |
Baja Pacific |
genre |
Eubalaena glacialis North Atlantic |
genre_facet |
Eubalaena glacialis North Atlantic |
op_relation |
Palaeogeography palaeoclimatology palaeoecology Noakes, Scott E., Pyenson, Nicholas D., and McFall, Greg. 2013. " Late Pleistocene gray whales (Eschrichtius robustus) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean ." Palaeogeography palaeoclimatology palaeoecology . 392:502–509. https://doi.org/10.1016/j.palaeo.2013.10.005 0031-0182 http://hdl.handle.net/10088/21913 117425 doi:10.1016/j.palaeo.2013.10.005 |
op_doi |
https://doi.org/10.1016/j.palaeo.2013.10.005 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
392 |
container_start_page |
502 |
op_container_end_page |
509 |
_version_ |
1766404375279828992 |