The crabeater seal, Lobodon carcinophaga, is primarily found on the coast and .. Reproductive aspects of female crabeater seals (Lobodon carcinophagus). Hückstädt, L. Lobodon carcinophaga. The IUCN Red List of Threatened Species Proper noun. Lobodon carcinophagus m. A taxonomic species within the family Phocidae – the crab-eater seal, native to the Antarctic ice floes.
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They feed by swimming through schools of krill with their mouth open, sieving the water out using their sophisticated teeth.
It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. Crabeater pobodon are thought to reproduce in Antarctica on the pack ice during the early Spring months between October and December.
Gestation lasts about 11 months and probably includes a period of delayed implantation Nowak At the end of the summer, crabeater seals disperse northward as the ice freezes. Exploratory dives are the deepest and presumably for navigation as they usually occur just before a traveling or foraging dive. As this is the primary food of the crabeater seal, there are bound to be negative consequences associated with the crabeater seal in this budding industry Nowak They are known for their ability to move rapidly on ice, with sinuous serpentine motions of the back, aided by the flippers.
Throughout the lactation period the male is aggressive towards the female. Klages and Cockcroft suggest that this is an adaption to winter feeding on krill in the Antarctic. Masked palm civet P. These seals almost always die and are well preserved as “mummies” in the ice throughout Antarctica Stirling and Kooyman The fur lightens throughout the year becoming completely blond in summer just before molting.
International Union for Conservation of Nature. The postcanine teeth are finely divided with multiple cusps. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a now extinct synapsid ancestor; the fossil record does not distinguish these possibilities. Small-toothed palm civet A. These scars are thought to be the result of unsuccessful leopard seal attacks on the seals as juveniles.
The crabeater seal lives on the pack ice and the near freezing water surrounding Antarctica. Occasionally, they can be seen traveling together in herdsbreathing and diving almost synchronously.
Crabeater Seals, Lobodon carcinophagus ~
Young crabeater seals experience significant predation by leopard seals. Lobodon Gray Some scientists also attribute the reduction in the age of sexual maturity of crabeater seals to the increase in its primary prey. Mediterranean monk seal M. While nursing, pups grow at a rate of about 4. Australian sea lion N.
Younger animals are marked by net-like, chocolate brown markings and flecks on the shoulders, sides and flanks, shading into the predominantly dark hind and fore flippers and head, often due to scarring from leopard seals. Most crabeaters have at least a few and often many long scars on the body, which are most often seen in pairs, parallel or near to each other. Pacific Ocean body of water between the southern ocean above 60 degrees south latitudeAustralia, Asia, and the western hemisphere.
The ancestral Lobodontini likely diverged from their sister cladethe Mirounga elephant seals in the late Miocene to early Pliocenewhen they migrated southward and diversified rapidly in the relative isolation around Antarctica.
Close mobile search navigation Article navigation. Curiously, crabeater seals have been known to wander further inland than cafcinophagus other pinniped. Ailurus Lobovon panda A. Pups are born weighing approximately 20 kg and gain weight while nursing at about 4.
Description & Behavior
By the end of lactation her body weight may be reduced by half, so she would be unable to defend herself adequately. He defends the female and the newborn pup.
Crabeater seals may use breathing holes created by Weddell seals Leptonychotes weddellii. Indeed, its scientific name, translated as “lobe-toothed lobodon crab eater carcinophaga “, refers specifically to the finely lobed teeth adapted to filtering their small crustacean prey.
Its remote habitat reduces the threats to this species, and are only at risk from environmental pollution trace amounts of DDT have been lobodo in this species and the potential for overfishing of krill, carcinophaguw crabeater’s primary prey.
Prionodon Banded linsang P.
Accessed Monday, December 31, These seals are covered mostly by brown or silver fur, with darker coloration around flippers. The secret life of possums: Wikispecies has information related to crabeater seals. Receive exclusive offers and updates from Oxford Academic.
They note that this prey is much larger than the krill that it would consume in the wild, and suggest that it could probably suck krill in from a much greater distance.
Citing articles via Web of Science 7.
The krill fishery has been on the rise since the mids and new techniques have been developed that process krill for fish feed. To purchase short term access, please sign in to your Oxford Carcinophaghs account above.