Moose genomes reveal past glacial demography and the origin of modern lineages
Posted on 2020-12-03 - 04:33
Abstract Background Numerous megafauna species from northern latitudes went extinct during the Pleistocene/Holocene transition as a result of climate-induced habitat changes. However, several ungulate species managed to successfully track their habitats during this period to eventually flourish and recolonise the holarctic regions. So far, the genomic impacts of these climate fluctuations on ungulates from high latitudes have been little explored. Here, we assemble a de-novo genome for the European moose (Alces alces) and analyse it together with re-sequenced nuclear genomes and ancient and modern mitogenomes from across the moose range in Eurasia and North America. Results We found that moose demographic history was greatly influenced by glacial cycles, with demographic responses to the Pleistocene/Holocene transition similar to other temperate ungulates. Our results further support that modern moose lineages trace their origin back to populations that inhabited distinct glacial refugia during the Last Glacial Maximum (LGM). Finally, we found that present day moose in Europe and North America show low to moderate inbreeding levels resulting from post-glacial bottlenecks and founder effects, but no evidence for recent inbreeding resulting from human-induced population declines. Conclusions Taken together, our results highlight the dynamic recent evolutionary history of the moose and provide an important resource for further genomic studies.
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Dussex, Nicolas; Alberti, Federica; Heino, Matti T.; Olsen, Remi-Andre; van der Valk, Tom; Ryman, Nils; et al. (2020). Moose genomes reveal past glacial demography and the origin of modern lineages. figshare. Collection. https://doi.org/10.6084/m9.figshare.c.5226938.v1
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AUTHORS (21)
ND
Nicolas Dussex
FA
Federica Alberti
MH
Matti T. Heino
RO
Remi-Andre Olsen
Tv
Tom van der Valk
NR
Nils Ryman
LL
Linda Laikre
HA
Hans Ahlgren
IA
Igor V. Askeyev
OA
Oleg V. Askeyev
DS
Dilyara N. Shaymuratova
AA
Arthur O. Askeyev
DD
Doris Döppes
RF
Ronny Friedrich
SL
Susanne Lindauer
WR
Wilfried Rosendahl
JA
Jouni Aspi
MH
Michael Hofreiter
KL
Kerstin Lidén
LD
Love Dalén