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Although the crabeater seal is sympatric with the other Antarctic seal species (Weddell, Ross and leopard seals), the specialization on krill minimizes interspecific food competition. Among krill-feeding whales , only blue whales ( Balaenoptera musculus ) and minke whales ( B. acutorostrata ) extend their range as far south as the pack ice ...
Antarctic krill is the keystone species of the Antarctic ecosystem beyond the coastal shelf, [22] and provides an important food source for whales, seals (such as leopard seals, fur seals, and crabeater seals), squid, icefish, penguins, albatrosses and many other species of birds. Crabeater seals have even developed special teeth as an ...
The extremely high abundance of crabeater seals in particular, with possibly over 30,000,000 individuals, is a testament to the high productivity of the Southern Ocean, especially with respect to krill. [6] High numbers of seals may also be the indirect result of the wide-scale extermination of large baleen whales in the Antarctic due to ...
While krill fishing is banned in U.S. waters due to concerns it could impact whales, seals and other animals that feed on the shrimp-like creatures, it’s been taking place for decades in ...
A humpback whale, likely lured by a trawling net capturing masses of Antarctic krill, became entangled last month and died in the Southern Ocean. Scientists say the humpbacks may have been ...
Antarctic krill, southern elephant seal pups and petrels such as the diving petrel and the cape petrel have also been taken as prey. [35] Vagrant leopard seals in New Zealand have been observed preying on chondrichthyans ; elephantfish , ghost sharks , and spiny dogfish were recorded as prey items.
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