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| Ecology and Behavior |
Pups are born in the open on the surface of the pack ice, from mid-March to early May. After the breeding season, many seals migrate northward with the retreating ice, returning south again as the ice advances in fall and winter.
Bearded seals are solitary and rarely haul-out on the same ice floe together, and even then, maintain healthy distances from neighbors. Mother and pup pairs are an exception to this rule. At times, bearded seals seem to concentrate in an area and this may be due to shifting winds and currents driving ice floes together or because of favorable feeding opportunities. Bearded seals are exceptionally wary and always haul-out and position themselves with their head very close to the water at the edge of an ice floe, along a crack, or by a hole.
In the water, bearded seals can be found "bottling," or floating vertically head-up, asleep. When startled, they bolt into the water and swim with strong strokes of the fore flippers with the head held up in a manner that looks like they are rising and surging through the surface of the water. When in the water and disturbed by a passing ship, bearded seals will roll steeply forward to dive, raise the lower back and rear flippers in the air and splash the flippers on the surface. This is often done repeatedly as the seal swims away from the direction the ship is traveling.
Bearded seals primarily feed on or near the bottom, and live in shallow areas overlying the continental shelf. They generally dive to depths of 200 m or less and frequently are found in much shallower areas. The longest dives recorded have been 20-25 minutes, with most dives lasting less than 10 minutes. They are quite vocal in the water and are known for their oscillating frequency-modulated songs that can last more than a minute and be heard in air and for long distances underwater. Singing has largely been attributed to males, but it is likely that females sing as well. Besides humans, predators include polar bears, killer whales and Greenland sharks. |
| Feeding and Prey |
Bearded seals feed on a large diversity of demersal fish species and invertebrates that live on, and in, the bottom. Different combinations of prey dominate feeding at different times of year and in different locations, and juveniles and adults have different prey preferences. In the Bering and Chukchi seas fishes taken included: capelin, Arctic and saffron cod, long-snouted pricklebacks, sculpins, flatfishes, several snailfish species, and eelpouts. Invertebrates were dominated by several species each of crabs, clams, snails, amphipods, shrimps, marine worms and octopus. |
| Threats and Status |
Native peoples of the Arctic have hunted bearded seals for subsistence for thousands of years. This practice continues to the present, with several thousand being taken annually throughout their circumpolar Arctic range. Bearded seals provide numerous products, including food for humans and sled dogs, oil for lamps, skins for clothing, boats and tent coverings, and leather for sinews, to name a few, and they are important in many other culturally important ways. The worldwide population is estimated at 500,000 with more than half of these thought to live in the Bering and Chukchi seas. Commercial exploitation by Soviet whalers in the Sea of Okhotsk and Bering and Chukchi seas during the mid-twentieth century resulted in harvests of thousands to more than 10,000 animals per year lasting several decades. |
| Links |
For current information on the conservation status of this species, please consult the following websites:
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| References |
ANTONELIS, G. A., S. R. MELIN, AND Y. A. BUKHTIYAROV. 1994. Early spring feeding habits of bearded seals (Erignathus barbatus) in the central Bering Sea, 1981. Arctic 47(1):74-79.
BURNS, J. J. 1981. Bearded seal-Erignathus barbatus Erxleben, 1777. Pp. 145-170 in S. H. Ridgway and R. Harrison, eds. Handbook of marine mammals, Vol. 2: Seals. Academic Press.
CLEATOR, H. J. 1996. The status of the bearded seal, Erignathus barbatus, in Canada. Canadian Field Naturalist 110(3):501-510.
KOVACS, K. M., C. LYDERSEN, AND I. GJERTZ. 1996. Birth-site characteristics and prenatal molting in bearded seals (Erignathus barbatus). Journal of Mammalogy 77(4):1085-1091.
KOVACS, K. M. 2002. Bearded seal Erignathus barbatus. Pp. 84-87 in W. F. Perrin, B. Wursig, and J. G. M. Thiewissen, eds. Encyclopedia of marine mammals. Academic Press.
LOWRY, L. F., K. J. FROST, AND J. J. BURNS. 1980. Feeding of bearded seals in the Bering and Chukchi seas and trophic interaction with Pacific walruses. Arctic 33(2):330-342. |
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