Steller’s sea cow genome suggests this species began going extinct before the arrival of Paleolithic humans
| Autor: | Dmitry A. Alekseev, Svetlana V. Tsygankova, Anna A. Krasivskaya, Eugenia S. Boulygina, Fedor Sharko, Artem V. Nedoluzhko, Alexei Tikhonov, N. V. Slobodova, Sergey M. Rastorguev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
food.ingredient Woolly mammoth Science Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 [VDP] Population General Physics and Astronomy Steller's sea cow Genome General Biochemistry Genetics and Molecular Biology Article Evolutionary genetics 03 medical and health sciences 0302 clinical medicine Marine mammal food Matematikk og Naturvitenskap: 400::Geofag: 450::Stratigrafi og paleontologi: 461 [VDP] Animal species education education.field_of_study Multidisciplinary Extinction biology Ecology General Chemistry Genomics Hydrodamalis biology.organism_classification 030104 developmental biology Geography Matematikk og Naturvitenskap: 400::Basale biofag: 470::Genetikk og genomikk: 474 [VDP] Zoology 030217 neurology & neurosurgery |
| Zdroj: | Nature Communications Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021) |
| Popis: | Anthropogenic activity is the top factor directly related to the extinction of several animal species. The last Steller’s sea cow (Hydrodamalis gigas) population on the Commander Islands (Russia) was wiped out in the second half of the 18th century due to sailors and fur traders hunting it for the meat and fat. However, new data suggests that the extinction process of this species began much earlier. Here, we present a nuclear de novo assembled genome of H. gigas with a 25.4× depth coverage. Our results demonstrate that the heterozygosity of the last population of this animal is low and comparable to the last woolly mammoth population that inhabited Wrangel Island 4000 years ago. Besides, as a matter of consideration, our findings also demonstrate that the extinction of this marine mammal starts along the North Pacific coastal line much earlier than the first Paleolithic humans arrived in the Bering sea region. A newly assembled Steller’s sea cow genome suggests that this marine mammal had low levels of genetic diversity and began to go extinct along the North Pacific coastline much earlier than when the first Paleolithic humans arrived in the Bering sea region. |
| Databáze: | OpenAIRE |
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