10.5061/DRYAD.7983
Mesnick, Sarah L.
National Oceanic and Atmospheric Administration
Taylor, Barbara L.
National Oceanic and Atmospheric Administration
Archer, Frederick I
National Oceanic and Atmospheric Administration
Martien, Karen K
National Oceanic and Atmospheric Administration
Escorza Treviño, Sergio
California State University Los Angeles
Hancock-Hanser, Brittany L.
National Oceanic and Atmospheric Administration
Moreno Medina, Sandra Carolina
Autonomous University of Baja California
Pease, Victoria L
National Oceanic and Atmospheric Administration
Robertson, Kelly M
National Oceanic and Atmospheric Administration
Straley, Janice M
University of Alaska Southeast
Baird, Robin W
Cascadia Research
Calambokidis, John
Cascadia Research
Schorr, Gregory S.
Cascadia Research
Wade, Paul
National Oceanic and Atmospheric Administration
Burkanov, Vladimir
National Oceanic and Atmospheric Administration
Lunsford, Chris R.
National Oceanic and Atmospheric Administration
Rendell, Luke
School of Biology, Bute Medical Building, Queen‘s Terrace, St. Andrews,
Fife, KY16 9TS, UK
Morin, Phillip A
National Oceanic and Atmospheric Administration
Data from: Sperm whale population structure in the eastern and central
North Pacific inferred by the use of single nucleotide polymorphisms
(SNPs), microsatellites and mitochondrial DNA
Dryad
dataset
2010
single nucleotide polymorphism
mitochondrial DNA control region
Holocene
sperm whale
Physeter macrocephalus
2010-11-18T18:40:23Z
2010-11-18T18:40:23Z
en
https://doi.org/10.1111/j.1755-0998.2010.02973.x
163840 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
We use mitochondrial DNA (400bp), six microsatellites and 36 single
nucleotide polymorphisms (SNPs), 20 of which were linked, to investigate
population structure of sperm whales (Physeter macrocephalus) in the
eastern and central North Pacific. SNP markers, reproducible across
technologies and laboratories, are ideal for long-term studies of globally
distributed species such as sperm whales, a species of conservation
concern due to both historical and contemporary impacts. We estimate
genetic differentiation among three strata in the temperate to tropical
waters where females are found: California Current, Hawai‛i and the
eastern tropical Pacific. We then consider how males on sub-Arctic
foraging grounds assign to these strata. The California Current stratum
was differentiated from both the other strata (p<0.05) for mtDNA,
microsatellites and SNPs, suggesting that the region supports a
demographically independent population and providing the first indication
that males may exhibit reproductive philopatry. Comparisons between the
Hawai‛i stratum and the eastern tropical Pacific stratum are not
conclusive at this time. Comparisons with Alaska males were statistically
significant or nearly so from all three strata and individuals showed
mixed assignment to, and few exclusions from, the three potential source
strata, suggesting widespread origin of males on sub-Arctic feeding
grounds. We show that SNPs have sufficient power to detect population
structure even when genetic differentiation is low. There is a need for
better analytical methods for SNPs, especially when linked SNPs are used,
but SNPs appear to be a valuable marker for long-term studies of globally
dispersed and highly mobile species.
Mesnick et al_Physeter genotypes_17 Nov 2010_n=287.xlsThe sample set
consisted of 287 North Pacific sperm whale samples for which six
hypervariable microsatellite loci and 36 SNP loci have been genotyped.
Samples obtained between 1972 and 2007. Samples were collected from
solitary or groups of free-ranging sperm whales by directed biopsy or the
collection of sloughed skin during cetacean research surveys and also from
dead animals stranded on beaches, floating dead at sea and from incidental
fishery takes. Sample locations refer to the waters of the eastern and
central North Pacific. See manuscript for additional details on
samples.Mesnick et al_Physeter genotypes_17 Nov 2010_n287.xls
central North Pacific
eastern North Pacific