Late Quaternary loss of genetic diversity in muskox ( Ovibos )
Abstract Background The modern wildherd of the tundra muskox ( Ovibos moschatus ) is native only to the New World (northern North America and Greenland), and its genetic diversity is notably low. However, like several other megafaunal mammals, muskoxen enjoyed a holarctic distribution during the lat...
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ftdoajarticles:oai:doaj.org/article:eb09b3a88f364bcc9190bc6df0314c45 2023-05-15T14:28:55+02:00 Late Quaternary loss of genetic diversity in muskox ( Ovibos ) Mol Dick Tikhonov Alexei N MacPhee Ross DE Greenwood Alex D 2005-10-01T00:00:00Z https://doi.org/10.1186/1471-2148-5-49 https://doaj.org/article/eb09b3a88f364bcc9190bc6df0314c45 EN eng BMC http://www.biomedcentral.com/1471-2148/5/49 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-5-49 1471-2148 https://doaj.org/article/eb09b3a88f364bcc9190bc6df0314c45 BMC Evolutionary Biology, Vol 5, Iss 1, p 49 (2005) Evolution QH359-425 article 2005 ftdoajarticles https://doi.org/10.1186/1471-2148-5-49 2022-12-30T20:31:35Z Abstract Background The modern wildherd of the tundra muskox ( Ovibos moschatus ) is native only to the New World (northern North America and Greenland), and its genetic diversity is notably low. However, like several other megafaunal mammals, muskoxen enjoyed a holarctic distribution during the late Pleistocene. To investigate whether collapse in range and loss of diversity might be correlated, we collected mitochondrial sequence data (hypervariable region and cytochrome b ) from muskox fossil material recovered from localities in northeastern Asia and the Arctic Archipelago of northern North America, dating from late Pleistocene to late Holocene, and compared our results to existing databases for modern muskoxen. Results Two classes of haplotypes were detected in the fossil material. "Surviving haplotypes" (SHs), closely similar or identical to haplotypes found in modern muskoxen and ranging in age from ~22,000 to ~160 yrbp, were found in all New World samples as well as some samples from northeastern Asia. "Extinct haplotypes" (EHs), dating between ~44,000 and ~18,000 yrbp, were found only in material from the Taimyr Peninsula and New Siberian Islands in northeastern Asia. EHs were not found in the Holocene muskoxen specimens available for this study, nor have they been found in other studies of extant muskox populations. Conclusion We provisionally interpret this evidence as showing that genetic variability was reduced in muskoxen after the Last Glacial Maximum but before the mid-Holocene, or roughly within the interval 18,000-4,000 yrbp. Narrowing this gap further will require the recovery of more fossils and additional genetic information from this interval. Article in Journal/Newspaper Arctic Archipelago Arctic Greenland muskox New Siberian Islands ovibos moschatus Taimyr Tundra Directory of Open Access Journals: DOAJ Articles Arctic Greenland New Siberian Islands ENVELOPE(142.000,142.000,75.000,75.000) BMC Evolutionary Biology 5 1 49 |
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English |
topic |
Evolution QH359-425 |
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Evolution QH359-425 Mol Dick Tikhonov Alexei N MacPhee Ross DE Greenwood Alex D Late Quaternary loss of genetic diversity in muskox ( Ovibos ) |
topic_facet |
Evolution QH359-425 |
description |
Abstract Background The modern wildherd of the tundra muskox ( Ovibos moschatus ) is native only to the New World (northern North America and Greenland), and its genetic diversity is notably low. However, like several other megafaunal mammals, muskoxen enjoyed a holarctic distribution during the late Pleistocene. To investigate whether collapse in range and loss of diversity might be correlated, we collected mitochondrial sequence data (hypervariable region and cytochrome b ) from muskox fossil material recovered from localities in northeastern Asia and the Arctic Archipelago of northern North America, dating from late Pleistocene to late Holocene, and compared our results to existing databases for modern muskoxen. Results Two classes of haplotypes were detected in the fossil material. "Surviving haplotypes" (SHs), closely similar or identical to haplotypes found in modern muskoxen and ranging in age from ~22,000 to ~160 yrbp, were found in all New World samples as well as some samples from northeastern Asia. "Extinct haplotypes" (EHs), dating between ~44,000 and ~18,000 yrbp, were found only in material from the Taimyr Peninsula and New Siberian Islands in northeastern Asia. EHs were not found in the Holocene muskoxen specimens available for this study, nor have they been found in other studies of extant muskox populations. Conclusion We provisionally interpret this evidence as showing that genetic variability was reduced in muskoxen after the Last Glacial Maximum but before the mid-Holocene, or roughly within the interval 18,000-4,000 yrbp. Narrowing this gap further will require the recovery of more fossils and additional genetic information from this interval. |
format |
Article in Journal/Newspaper |
author |
Mol Dick Tikhonov Alexei N MacPhee Ross DE Greenwood Alex D |
author_facet |
Mol Dick Tikhonov Alexei N MacPhee Ross DE Greenwood Alex D |
author_sort |
Mol Dick |
title |
Late Quaternary loss of genetic diversity in muskox ( Ovibos ) |
title_short |
Late Quaternary loss of genetic diversity in muskox ( Ovibos ) |
title_full |
Late Quaternary loss of genetic diversity in muskox ( Ovibos ) |
title_fullStr |
Late Quaternary loss of genetic diversity in muskox ( Ovibos ) |
title_full_unstemmed |
Late Quaternary loss of genetic diversity in muskox ( Ovibos ) |
title_sort |
late quaternary loss of genetic diversity in muskox ( ovibos ) |
publisher |
BMC |
publishDate |
2005 |
url |
https://doi.org/10.1186/1471-2148-5-49 https://doaj.org/article/eb09b3a88f364bcc9190bc6df0314c45 |
long_lat |
ENVELOPE(142.000,142.000,75.000,75.000) |
geographic |
Arctic Greenland New Siberian Islands |
geographic_facet |
Arctic Greenland New Siberian Islands |
genre |
Arctic Archipelago Arctic Greenland muskox New Siberian Islands ovibos moschatus Taimyr Tundra |
genre_facet |
Arctic Archipelago Arctic Greenland muskox New Siberian Islands ovibos moschatus Taimyr Tundra |
op_source |
BMC Evolutionary Biology, Vol 5, Iss 1, p 49 (2005) |
op_relation |
http://www.biomedcentral.com/1471-2148/5/49 https://doaj.org/toc/1471-2148 doi:10.1186/1471-2148-5-49 1471-2148 https://doaj.org/article/eb09b3a88f364bcc9190bc6df0314c45 |
op_doi |
https://doi.org/10.1186/1471-2148-5-49 |
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BMC Evolutionary Biology |
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49 |
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1766303049688547328 |