Mammalia |
Carnivora |
Phocidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
Djupbottenlevande. Subtropical; 90°N - 0°S, 126°E - 115°W
Pacific Ocean and the Arctic: Eastern side of Ostrov Sakhalin to northern Hokkaido. Subtropical to polar.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ?  range ? - ? cm Max length : 170 cm TL hane/ej könsbestämd; (Ref. 1394); 160 cm TL (female); publicerad maxvikt: 123.0 kg (Ref. 1394)
Inhabit the southern edges of the pack ice from winter to early summer and coastal areas including river mouths, in late summer and autumn. Diet composition varies with the age of the seal; Newly weaned pups feed on small crustaceans, advance to schooling fishes, larger crustaceans, and octopuses, and finally graduate to bottom dwelling fish and cephalopods (Ref. 1394). Inhabits the southern edges of the pack ice from winter to early summer and coastal areas including river mouths, in late summer and autumn. Diet composition varies with the age of the seal; newly weaned pups feed on small crustaceans, advance to schooling fishes, larger crustaceans, and octopuses, and finally graduate to bottom dwelling fish and cephalopods (Ref. 1394). Those in their first year tend to eat mostly small crustaceans, algae, sticks and debris; 1 to 4 year olds mostly eat fishes, larger shrimps, and octopus, occasionally; 5 year olds consumed more benthic invertebrates like crabs and octopus (Ref. 119414).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae
Jefferson, T.A., S. Leatherwood and M.A. Webber 1993 FAO species Identification Guide: Marine Mammals of the World. Rome, FAO. 320 p. + 587 figures. (Ref. 1394)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
Fiskeri: kommersiell
FAO - fiskeri: landings, species profile | FishSource | Sea Around Us
Verktyg
Ytterligare information
Life cycleReproduktion
Könsmognad
Fecundity
Lek
Eggs
Egg development
Larvae
PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
Preferred temperature
(Ref.
115969): -0.6 - 5.6, mean 2.2 (based on 1984 cells).
Resiliens
Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (K=0.16-0.44).
Fishing Vulnerability
High to very high vulnerability (72 of 100).
Price category
Unknown.