The subsequent decline
of bowhead abundances in the CAA is consistent with the abandonment of the high Arctic of Canada and Greenland by bowhead hunters, while Thule living in more southern Arctic regions increasingly focused on alternate food resources.
The proportional contribution of various food sources (zooplankton) to the diet
of bowhead whales was determined using a Bayesian stable isotope mixing model (SIAR; Parnell et al. 2008).
The analysis of individual bowhead whale stomach contents revealed the broad foraging spectrum
of bowhead whales including a dominant contribution of the epibenthic mysid species, Mysis oculata, along with arctic copepods Metridia longa and Calanus spp. and the amphipod Themisto spp. and Onisimus spp. (Pomerleau et al. 2011b).
We hypothesized that lower hair δ15N values were due to the consumption
of bowhead whale (Balaena mysticetus) tissue.
Offshore, pods
of bowhead whales are still hunted by Alaska Natives.
It sounds almost exactly like the song
of the bowhead whale, a rarely encountered denizen of arctic seas.
# 52 Historic evidence may be found in the DNA
of Bowhead whales.
When they first arrived the ships had to part rafts
of bowhead whales just to move through the fjords, but by 1700, they were nearly all gone.
[In response to MrPete's] # 52 Historic evidence may be found in the DNA
of Bowhead whales.
I suggest Dyson to check out the history
of Bowhead whalers (17th to 20th centuries), never going from Alaska to Greenland chasing their prey.
Pods
of bowhead whales slipping through the sea.
Rhea Mehta, Ph.D., is a molecular toxicologist, integrative health coach, and CEO
of Bowhead Health, a health care startup on a mission to remove the pain points and inefficiencies of...
Anderung C, Danise S, Glover AG, Higgs ND, Jonsson L, Sabin R, Dahlgren TG (2014) A Swedish subfossil find
of a bowhead whale from the late Pleistocene: shore displacement, paleoecology in south - west Sweden and the identity of the Swedenborg whale (Balaena swedenborgii Liljeborg, 1867).
A 2011 study found that the rendered oils
of bowhead whale, seals and walrus contained PCB concentrations of 193 to 421 parts per billion.
In 2004, during an aerial survey
of bowhead whales in the Beaufort Sea north of Alaska, Monnett and his colleague Jeffrey Gleason observed four dead polar bears.
The story
of the bowhead whale is shaming.
At the other extreme, some specimens
of bowhead whale appear to be more than 120 years old, judging from the age of harpoons lodged in their flesh.
Not exact matches
Bowhead whales are some
of the largest animals alive.
An open North - West Passage may be good news for
bowheads, which will have more places to feed, but many Inuit will struggle, since they rely on walruses that are running out
of sea ice on which to breed.
The two
bowheads were tagged by Mads Peter Heide - Jørgensen
of the Greenland Institute
of Natural Resources in Nuuk and his colleagues.
Biologists also built on Iñupiaq observations to learn that
bowheads possess a sense
of smell, unlike most other whales.
«I have never had the slightest indication that he has any bias
of any kind,» says Phillip Clapham
of the US National Oceanic and Atmospheric Administration's National Marine Mammal Laboratory in Seattle, which collaborated on the
bowhead whale survey.
The four right whale species live in distinct locations: around 300 Atlantic Northern Right Whales live in the North Atlantic; approximately 200 Pacific Northern Right Whales live in the North Pacific; about 7,500 Southern Right Whales are spread throughout the southern part
of the Southern Hemisphere; and 8,000 — 9,200
Bowhead Whales are distributed entirely in the Arctic Ocean.
The microphones record data at a sample rate
of 8kHz, so the group listens up to 4kHz — for scale, the highest note on a normally tuned, standard piano is 4.186 kHz — to include signals produced by large whales like fins, humpbacks,
bowheads and killer whales, as well as pinnipeds such as bearded seals and walrus.
But over the past decades, the melt season has grown longer and the average extent
of Arctic sea ice has diminished, changing the game for many Arctic marine mammals — namely beluga, narwhal and
bowhead whales; ringed, bearded, spotted, ribbon, harp and hooded seals; walruses; and polar bears.
They examined the dynamics for three kinds
of whales: minkes,
bowheads, and gray whales.
To learn the secret behind aging gracefully, you may want to check out the
bowhead whale, the majestic denizen
of the Arctic waters that boasts a lifespan topping 200 years.
The
Bowhead Whale, also known as Greenland Right Whale or Arctic Whale, is a marine mammal
of the order Cetacea.
«
Bowhead whales weigh between 50 and 100 tons when fully grown and have probably 1,000 times as many cells as humans, but they apparently have a anti-tumor response at the cell level that is far more efficient than what is found in humans,» said biologist Mads Peter Heide - Jørgensen
of the Greenland Institute
of Natural Resources and the University
of Copenhagen.
Insights into the evolution
of longevity from the
bowhead whale genome.
But the whales seem to get sick
of their songs relatively quickly as each song was only sung Read more about
Bowhead whales prolific composers - Scimex
What is clear is that redox - insulin axis is better in
bowhead whales and that transcriptome study showed they have better vascular endothelial function and thus, lower arterial collagen ECM stiffening (by reduced crosslinks and AGEs glycation / glycoxidation
of their vasculature:
This means no diabetes in
Bowhead whales, obviously since diabetes is accelerated aging
of the ECM, such as species pentosidine accrual age curves show and same thing for crosslinks like glucosepane.
The Arctic Ocean's sea ice and waters are habitat for many imperiled species, from polar bears to
bowhead whales — and they all face the threat
of dirty fossil - fuel development.
Gentle giants
of the sea,
bowhead whales live in the coldest, most remote reaches
of the world's oceans.
Bowhead whales live in the Arctic all year round, and their movements are influenced by the freezing and melting
of sea ice.
He exposes a world none
of us ever sees: we are face to face with a
bowhead whale, a newborn walrus pup, the very pupil
of the eye
of a macaroni penguin.
Ice Whale is yet another epic nature adventure set in northern Alaska, but this one unfolds with a surprising twist: It alternates between voices
of Eskimos and a
bowhead whale, and chapters featuring the whale include squiggly symbols, invented by George to represent whale sounds.
With Alaska no longer the profitable endeavor, the foreign invaders left, leaving the
bowhead whale, the walrus, and the caribou in a state
of near extinction.
The IWC
Bowhead, Right and Gray Whale subcommittee in 2011 reiterated the conservation risk to western gray whales is large because
of the small size
of the population and the potential anthropogenic impacts.
During the same period, vessels targeting right and
bowhead whales in the Gulf
of Alaska, Sea
of Okhotsk, and the Western Arctic would take the odd gray whale if neither
of the more desirable two species were in sight.
But after reports that someone doing an aerial survey for
bowhead whales in Alaskan waters spotted around 10 bears swimming well offshore, the World Wildlife Fund distributed an unrelated picture (above)
of a swimming bear, taken earlier this month, to drive home the idea that melting ice is making times tough up north.
I did this once with walrus where we attached a camera to the tusk
of the animal, another time with the
bowhead whale using a suction cup attaching a camera to the back
of the whale, and yet again more recently with my 3D Polar Bear film attaching a camera to a female polar bear.
The author led two expeditions to study, film and record the
Bowhead whale in the 1970s (Film Board
of Canada made a documentary
of the second & American Scientist published a cover article on the first), is co-discoverer
of Songs
of Humpback Whale, Science, 1971) and served on US delegation to International Whaling Commission for six years.
Consider for a moment, the
Bowhead or Greenland Right whale, dubbed Monarch
of the Seas by Melville.
An oil spill could devastate endangered species like polar bears and
bowhead whales, destroy habitat for millions
of migratory birds, and jeopardize the subsistence - based Inupiat culture.
Scott McVay, a pioneer in the study
of whale vocalizations, wrote to express his concerns that the article didn't get in the vantage point
of the species perhaps more at risk — the ancient
bowhead whale.
Exploratory drilling will occur just north
of the western edge
of the Arctic National Wildlife Refuge (ANWR) in the Beaufort Sea, home to
bowhead and beluga whales, seals, walruses, polar bears, and a wide variety
of migrating birds.
Using the Outer Continental Shelf Lands Act, Obama blocked drilling in large portions
of the Chukchi and Beaufort seas in the Arctic, home to several endangered species, including the
bowhead whale, fin whale, Pacific walrus, and polar bear.
Drilling and fuel shipping have also increased the chances
of oil spills, which would affect the
bowhead and other whales, seals, and walruses in the Bering Straight as well as the 12 million birds that nest and forage in the area every year.