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Migration of Antarctic minke whales to the Arctic.

Glover KA, Kanda N, Haug T, Pastene LA, Oien N, Goto M, Seliussen BB, Skaug HJ - PLoS ONE (2010)

Bottom Line: The Antarctic minke whale (Balaenoptera bonaerensis), and the common minke whale found in the North Atlantic (Balaenoptera acutorostrata acutorostrata), undertake synchronized seasonal migrations to feeding areas at their respective poles during spring, and to the tropics in the autumn where they overwinter.Paternal contribution was not conclusively resolved.This is the first documentation of B. bonaerensis north of the tropics, and, the first documentation of hybridization between minke whale species.

View Article: PubMed Central - PubMed

Affiliation: Institute of Marine Research, Bergen, Norway. Kevin.glover@imr.no

ABSTRACT
The Antarctic minke whale (Balaenoptera bonaerensis), and the common minke whale found in the North Atlantic (Balaenoptera acutorostrata acutorostrata), undertake synchronized seasonal migrations to feeding areas at their respective poles during spring, and to the tropics in the autumn where they overwinter. Differences in the timing of seasons between hemispheres prevent these species from mixing. Here, based upon analysis of mitochondrial and microsatellite DNA profiles, we report the observation of a single B. bonaerensis in 1996, and a hybrid with maternal contribution from B. bonaerensis in 2007, in the Arctic Northeast Atlantic. Paternal contribution was not conclusively resolved. This is the first documentation of B. bonaerensis north of the tropics, and, the first documentation of hybridization between minke whale species.

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Related in: MedlinePlus

Global distribution of minke whales during northern hemisphere summer feeding season.A: Balaenoptera a. acutorostrata, B: B. a. scammoni, C: B. bonaerensis, D: B. a. unnamed subspecies (dwarf minke).1996 and 2007 refers to locations of capture for two atypical whales.
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pone-0015197-g001: Global distribution of minke whales during northern hemisphere summer feeding season.A: Balaenoptera a. acutorostrata, B: B. a. scammoni, C: B. bonaerensis, D: B. a. unnamed subspecies (dwarf minke).1996 and 2007 refers to locations of capture for two atypical whales.

Mentions: The Norwegian DNA register for B.a. acutorostrata consists of 7066 genetic profiles from 7139 individuals captured in the Northeast Atlantic in the period 1996–2008. Individual genetic profiles are produced through a combination of 10 microsatellite loci, sequencing part of the mtDNA control region, and a mysticetes sex marker (Supporting Text S1). In 1996, and 2007, two whales deviating from the typical genetic profile for B.a. acutorostrata were captured in the Northeast Atlantic (Fig. 1). In order to identify these two individuals, a mixture of mtDNA (to look at maternal contribution) and microsatellite DNA analyses (to look at both paternal and maternal contribution) were conducted.


Migration of Antarctic minke whales to the Arctic.

Glover KA, Kanda N, Haug T, Pastene LA, Oien N, Goto M, Seliussen BB, Skaug HJ - PLoS ONE (2010)

Global distribution of minke whales during northern hemisphere summer feeding season.A: Balaenoptera a. acutorostrata, B: B. a. scammoni, C: B. bonaerensis, D: B. a. unnamed subspecies (dwarf minke).1996 and 2007 refers to locations of capture for two atypical whales.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3008685&req=5

pone-0015197-g001: Global distribution of minke whales during northern hemisphere summer feeding season.A: Balaenoptera a. acutorostrata, B: B. a. scammoni, C: B. bonaerensis, D: B. a. unnamed subspecies (dwarf minke).1996 and 2007 refers to locations of capture for two atypical whales.
Mentions: The Norwegian DNA register for B.a. acutorostrata consists of 7066 genetic profiles from 7139 individuals captured in the Northeast Atlantic in the period 1996–2008. Individual genetic profiles are produced through a combination of 10 microsatellite loci, sequencing part of the mtDNA control region, and a mysticetes sex marker (Supporting Text S1). In 1996, and 2007, two whales deviating from the typical genetic profile for B.a. acutorostrata were captured in the Northeast Atlantic (Fig. 1). In order to identify these two individuals, a mixture of mtDNA (to look at maternal contribution) and microsatellite DNA analyses (to look at both paternal and maternal contribution) were conducted.

Bottom Line: The Antarctic minke whale (Balaenoptera bonaerensis), and the common minke whale found in the North Atlantic (Balaenoptera acutorostrata acutorostrata), undertake synchronized seasonal migrations to feeding areas at their respective poles during spring, and to the tropics in the autumn where they overwinter.Paternal contribution was not conclusively resolved.This is the first documentation of B. bonaerensis north of the tropics, and, the first documentation of hybridization between minke whale species.

View Article: PubMed Central - PubMed

Affiliation: Institute of Marine Research, Bergen, Norway. Kevin.glover@imr.no

ABSTRACT
The Antarctic minke whale (Balaenoptera bonaerensis), and the common minke whale found in the North Atlantic (Balaenoptera acutorostrata acutorostrata), undertake synchronized seasonal migrations to feeding areas at their respective poles during spring, and to the tropics in the autumn where they overwinter. Differences in the timing of seasons between hemispheres prevent these species from mixing. Here, based upon analysis of mitochondrial and microsatellite DNA profiles, we report the observation of a single B. bonaerensis in 1996, and a hybrid with maternal contribution from B. bonaerensis in 2007, in the Arctic Northeast Atlantic. Paternal contribution was not conclusively resolved. This is the first documentation of B. bonaerensis north of the tropics, and, the first documentation of hybridization between minke whale species.

Show MeSH
Related in: MedlinePlus