Genetic variation in blue whales in the eastern pacific: implication for taxonomy and use of common wintering grounds

  title={Genetic variation in blue whales in the eastern pacific: implication for taxonomy and use of common wintering grounds},
  author={Richard G. LeDuc and Frederick I. Archer and A. R. Lang and Karen K. Martien and Brittany L. Hancock‐Hanser and Juan Pablo Torres-Florez and Rodrigo Hucke‐Gaete and Howard C. Rosenbaum and Koen van Waerebeek and Robert L. Brownell and Barbara L. Taylor},
  journal={Molecular Ecology},
Many aspects of blue whale biology are poorly understood. Some of the gaps in our knowledge, such as those regarding their basic taxonomy and seasonal movements, directly affect our ability to monitor and manage blue whale populations. As a step towards filling in some of these gaps, microsatellite and mtDNA sequence analyses were conducted on blue whale samples from the Southern Hemisphere, the eastern tropical Pacific (ETP) and the northeast Pacific. The results indicate that the ETP is… 

Allometry and morphometry of blue whales photographed in the Gulf of California: insights into subspecies taxonomy in the Eastern North Pacific

Allometric and morphometric analyses indicated that the caudal peduncle proportion of these blue whales was significantly larger than that of the Indian Ocean pygmy blue whale, suggesting that more than one morphotype inhabits the ENP, and highlights gaps in knowledge on the taxonomy of these whales.

Seasonal Occurrence of Sympatric Blue Whale Subspecies: the Chilean and Southeast Indian Ocean Pygmy Blue Whales With the Antarctic Blue Whale

There are multiple blue whale acoustic populations found across the Southern Hemisphere. The different subspecies of blue whales feed in separate areas, but during their migration to lower-latitude

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The results suggest special efforts should be put forward to identify blue whale critical areas and understand key behavioral aspects in order to provide the basis for their conservation on a regional context (i.e., reducing potential ship strike and promote Marine Protected Area (MPA) implementation in Chile, Ecuador and Peru).

Revision of fin whale Balaenoptera physalus (Linnaeus, 1758) subspecies using genetics

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The results confirm the importance of the southern Indian Ocean for several populations of endangered large whales and present the first long-term assessment of fin whales in theSouthern Indian Ocean.

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The genomes of six whales are presented, including the blue whale (Balaenoptera musculus), to reconstruct a species tree of baleen whales and to identify phylogenetic conflicts, raising questions about how genetic divergence can be established.

Occurrence of blue whales (Balaenoptera musculus) in offshore waters of southeastern Brazil

At-sea sightings of blue whales, Balaenoptera musculus, in Brazil are rare. A mother-calf pair was observed in deep (2645 m) waters off southeastern Brazil (22°11′S 038°58′W); during a seismic survey

‘Genoustics’: Combining near-field acoustic records, genetic identity, and photograph records of an individual blue whale off the central Oregon coast

Here we present results of a pilot project to simultaneously collect photographs, acoustic call records, and tissue biopsy sample of a blue whale from the eastern North Pacific, with the goal to



Blue whale population structure along the eastern South Pacific Ocean: evidence of more than one population

The results suggest at least two breeding population units or subspecies exist, which is supported by other lines of evidence such as morphometrics and acoustics and supports the hypothesis that eastern South Pacific blue whales are using the ETP area as a possible breeding area.


The distribution of blue whales, Balaenoptera musculus, in the eastern tropical Pacific (ETP) was analyzed from 211 sightings of 355 whales recorded during research vessel sighting surveys or by

Past and present distribution, densities and movements of blue whales Balaenoptera musculus in the Southern Hemisphere and northern Indian Ocean

Blue whales avoid the oligotrophic central gyres of the Indian, Pacific and Atlantic Oceans, but are more common where phytoplankton densities are high, and where there are dynamic oceanographic processes like upwelling and frontal meandering.

High genetic diversity in a small population: the case of Chilean blue whales

Although levels of genetic diversity are frequently used as estimators of population health, these parameters depend on the biology of the species and should be taken into account in a monitoring framework study to obtain a more complete picture of the conservation status of a population.

Insights into the population structure of blue whales in the Eastern North Pacific from recent sightings and photographic identification

Blue whales were widely distributed in the North Pacific prior to the primary period of modern commercial whaling in the early 1900s. Despite concentrations of blue whale catches off British Columbia

Reproductive parameters of eastern North Pacific blue whales Balaenoptera musculus

It is reported here that females show site fidelity to the Gulf of California (GoC) even when not lactating, suggesting the existence of additional calv- ing and nursing grounds for this population.

Discovery of a blue whale feeding and nursing ground in southern Chile

The recent discovery of, arguably, the most important blue whale feeding and nursing ground known to date in the Southern Hemisphere, which is located near the fjords off southern Chile is reported.


The satellite-acquired locations of 10 blue whales (Balaenoptera musculus) tagged off southern California with Argos radio tags were used to identify (1) their movements during the late summer

A new song recorded from blue whales in the Corcovado Gulf, Southern Chile, and an acoustic link to the Eastern Tropical Pacific

The identity, distribution and movements of blue whales Balaenoptera musculus that forage in the Chiloense Ecoregion in Southern Chile remain unclear. Studies of blue whale songs have identified

Low genetic diversity in pygmy blue whales is due to climate-induced diversification rather than anthropogenic impacts

Low levels of genetic diversity in Australia are due to a natural founder event from Antarctic blue whales (Balaenoptera musculus intermedia) that occurred around the Last Glacial Maximum, followed by evolutionary divergence.