Animalia > Chordata > Mammalia > Carnivora > Phocidae > Cystophora > Cystophora cristata

Cystophora cristata (Hooded Seal; bladdernose seal)

Language: French

Wikipedia Abstract

The hooded seal (Cystophora cristata) is an arctic pinniped found only in the central and western North Atlantic ranging from Svalbard in the east to the Gulf of St. Lawrence in the west.
View Wikipedia Record: Cystophora cristata

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 14.31
EDGE Score: 4.11


Adult Weight [2]  507.07 lbs (230.00 kg)
Birth Weight [3]  39.68 lbs (18.00 kg)
Female Weight [2]  352.74 lbs (160.00 kg)
Male Weight [2]  661.39 lbs (300.00 kg)
Weight Dimorphism [2]  87.5 %
Female Maturity [3]  3 years
Male Maturity [3]  5 years
Diet [1]  Carnivore
Gestation [3]  8 months
Litter Size [3]  1
Litters / Year [3]  1
Migration [1]  Interoceanic
Water Biome [1]  Coastal
Weaning [3]  7 days

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Arctic National Wildlife Refuge Ib 12402936 Alaska, United States
Auyuittuq National Park II 4808115 Nunavut, Canada
Cape Breton Highlands National Park II 234333 Nova Scotia, Canada  
Cape Cod National Seashore II 21724 Massachusetts, United States
North-east Greenland National Park II 237590314 Greenland
Prince Edward Island National Park II   Prince Edward Island, Canada  
Quttinirpaaq (Ellesmere Island) National Park Reserve II 9436606 Nunavut, Canada
Sirmilik National Park II 5475284 Canada
Terra Nova National Park IV 125894 Newfoundland, Canada

Prey / Diet

Clupea harengus (Yawling)[4]
Gonatus fabricii (boreoatlantic armhook squid)[5]
Mallotus villosus (Capelin)[4]
Melanogrammus aeglefinus (Smokie)[4]
Pseudopleuronectes americanus (rough flounder)[4]
Reinhardtius hippoglossoides (Turbot)[4]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Alca torda (Razorbill)1
Amblyraja hyperborea (Arctic skate)2
Balaenoptera acutorostrata (Minke Whale)3
Balaenoptera borealis (Sei Whale)1
Balaenoptera physalus (Fin Whale)1
Boreogadus saida (Polar cod)1
Brachyramphus marmoratus (Marbled Murrelet)2
Cepphus grylle (Black Guillemot)1
Cerorhinca monocerata (Rhinoceros Auklet)1
Delphinapterus leucas (Beluga)1
Erignathus barbatus (Bearded Seal)1
Fratercula arctica (Atlantic Puffin)2
Fratercula cirrhata (Tufted Puffin)2
Fratercula corniculata (Horned Puffin)1
Fulmarus glacialis (Northern Fulmar)1
Globicephala melas (Long-finned Pilot Whale)3
Halichoerus grypus (Gray Seal)1
Hexagrammos stelleri (Greenling)1
Hippoglossoides platessoides (American dab)2
Histriophoca fasciata (Ribbon Seal)2
Hyperoodon ampullatus (Northern Bottlenose Whale)1
Lagenorhynchus acutus (Atlantic White-sided Dolphin)2
Lagenorhynchus albirostris (White-beaked Dolphin)3
Larus argentatus (Herring Gull)1
Larus canus (Mew Gull)1
Larus glaucescens (Glaucous-winged Gull)1
Larus marinus (Great Black-backed Gull)1
Megaptera novaeangliae (Humpback Whale)1
Monodon monoceros (Narwhal)1
Morus bassanus (Northern Gannet)2
Orcinus orca (Killer Whale)1
Pagophilus groenlandicus (Harp Seal)3
Phalacrocorax auritus (Double-crested Cormorant)2
Phalacrocorax carbo (Great Cormorant)1
Phoca largha (Spotted Seal)1
Phoca vitulina (Harbor Seal)1
Phocoena phocoena (Harbor Porpoise)3
Physeter macrocephalus (Sperm Whale)1
Pollachius virens (Sillock)2
Pusa hispida (Ringed Seal)1
Reinhardtius hippoglossoides (Turbot)2
Rissa tridactyla (Black-legged Kittiwake)1
Sebastes mentella (Redfish)1
Somniosus microcephalus (gray shark)3
Stercorarius parasiticus (Parasitic Jaeger)1
Uria aalge (Common Murre)2
Uria lomvia (Thick-billed Murre)1
Urophycis chuss (Squirrel hake)1


Somniosus microcephalus (gray shark)[6]


Parasitized by 
Acanthocheilonema spirocauda <Unverified Name>[7]
Anisakis simplex[7]
Anophryocephalus anophrys[7]
Bordetella bronchiseptica (Kennel cough)[8]
Contracaecum osculatum[7]
Corynosoma hadweni[7]
Corynosoma semerme[7]
Dipetalonema spirocauda[7]
Diphyllobothrium elegans[7]
Diphyllobothrium lanceolatum[7]
Diphyllobothrium latum[7]
Diphyllobothrium pterocephalum <Unverified Name>[7]
Diphyllobothrium tetrapterus[7]
Dirofilaria immitis (Heartworm)[7]
Dirofilaria spirocauda <Unverified Name>[7]
Filaroides gymnurus <Unverified Name>[7]
Metorchis albidus[7]
Opisthorchis tenuicollis[7]
Orthosplanchnus arctica <Unverified Name>[7]
Orthosplanchnus arcticus[7]
Otostrongylus circumlitus <Unverified Name>[7]
Phocascaris cystophorae <Unverified Name>[7]
Phocascaris phocae <Unverified Name>[7]
Pseudamphistomum truncatum[7]
Pseudoterranova decipiens[7]
Pyramicocephalus phocarum[7]
Yersinia enterocolitica (Y. enterocolitica)[8]

Range Map

North America;



Species recognized by Wozencraft W.C., 2014-02-03, ITIS Global: The Integrated Taxonomic Information System in Catalog of Life 2011
Attributes / relations provided by 1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at 2Cystophora cristata, Kit M. Kovacs and D. M. Lavigne, MAMMALIAN SPECIES No. 258, pp. –9 (1986) 3de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774 4Estimated Fish Consumption by Hooded Seals (Cystophora cristata), in the Gulf of St. Lawrence, M. O. Hammill, C. Lydersen, K. M. Kovacs and B. Sjare, J. Northw. Atl. Fish. Sci., Vol. 22: 249–257 (1997) 5CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database 6McMeans, Bailey C., et al. "The role of Greenland sharks (Somniosus microcephalus) in an Arctic ecosystem: assessed via stable isotopes and fatty acids." Marine Biology 160.5 (2013): 1223+. Academic OneFile. Web. 14 July 2014. 7Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London 8Nunn, C. L., and S. Altizer. 2005. The Global Mammal Parasite Database: An Online Resource for Infectious Disease Records in Wild Primates. Evolutionary Anthroplogy 14:1-2.
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
EDGE analysis provided by EDGE of Existence programme, Zoological Society of London
Range map provided by IUCN (International Union for Conservation of Nature), Conservation International & NatureServe.
Weather provided by NOAA METAR Data Access