10.5061/DRYAD.C003F8C
Filatova, Olga A.
Moscow State University
Borisova, Ekaterina A.
Moscow State University
Meshchersky, Ilya G.
Severtsov Institute of Ecology and Evolution
Logacheva, Maria D.
Moscow State University
Kuzkina, Nataliia V.
Moscow Institute of Physics and Technology
Shpak, Olga V.
Severtsov Institute of Ecology and Evolution
Morin, Phillip A.
Southwest Fisheries Science Center
Hoyt, Erich
Global Critical Habitat Marine Protected Areas Programme, Whale and
Dolphin Conservation, UK
Meschersky, Ilya G
Severtsov Institute of Ecology and Evolution
Data from: Colonizing the wild west: low diversity of complete
mitochondrial genomes in western North Pacific killer whales suggests a
founder effect
Dryad
dataset
2018
killer whale
Last Glacial Maximum Subject area: Population structure and phylogeography
Orcinus orca
cetacean
2018-07-17T13:55:40Z
2018-07-17T13:55:40Z
en
https://doi.org/10.1093/jhered/esy037
10610 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
In the North Pacific, fish-eating R-type “resident” and mammal-eating
T-type “transient” killer whales do not interbreed and differ in ecology
and behavior. Full-length mitochondrial genomes (about 16.4 kbp) were
sequenced and assembled for 12 R-type and 14 T-type killer whale samples
from different areas of the western North Pacific. All R-type individuals
had the same haplotype, previously described for R-type killer whales from
both eastern and western North Pacific. However, haplotype diversity of
R-type killer whales was much lower in the western North Pacific than in
the Aleutian Islands and the eastern North Pacific. T-type whales had 3
different haplotypes, including one previously undescribed. Haplotype
diversity of T-type killer whales in the Okhotsk Sea was also much lower
than in the Aleutian Islands and the eastern North Pacific. The highest
haplotype diversity for both R- and T-type killer whales was observed in
the Aleutian Islands. We discuss how the environmental conditions during
the last glacial period might have shaped the history of killer whale
populations in the North Pacific. Our results suggest the recent
colonization or re-colonization of the western North Pacific by small
groups of killer whales originating from the central or eastern North
Pacific, possibly due to favorable environmental changes after the Last
Glacial Maximum.
Sampling locations and mitogenome genotypes of killer whales in the
western North PacificThis file contains the mitogenome genotypes, ecotypes
and geographic coordinates (latitude and longitude) of sampling locations
for the killer whale samples analysed in this study.S1.xlsx
North Pacific Ocean