Animalia > Chordata > Mammalia > Cetacea > Delphinidae > Grampus > Grampus griseus

Grampus griseus (Risso's Dolphin)

Synonyms: Delphinus griseus; Delphinus rissoanus; Grampus rissoanus; Grampus stearnsii
Language: Spanish

Wikipedia Abstract

Risso's dolphin (Grampus griseus) is the only species of dolphin in the genus Grampus.
View Wikipedia Record: Grampus griseus

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 7.44
EDGE Score: 2.13


Adult Weight [1]  936.97 lbs (425.00 kg)
Diet [2]  Carnivore (Invertebrates), Piscivore
Diet - Fish [2]  50 %
Diet - Invertibrates [2]  50 %
Forages - Marine [2]  100 %
Gestation [1]  1 year
Litter Size [1]  1
Maximum Longevity [1]  43 years

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Archipelago de Colon Biosphere Reserve 34336011 Galapagos Islands, Ecuador  
California Coast Ranges Biosphere Reserve 153447 California, United States  
Channel Islands National Marine Sanctuary   California, United States
Channel Islands National Park II 139010 California, United States
Everglades and Dry Tortugas Biosphere Reserve   Florida, United States  
Farallon National Wildlife Refuge IV 352 California, United States
Florida Keys National Marine Sanctuary IV 2387149 Florida, United States
Gwaii Haanas National Park Reserve II 366714 British Columbia, Canada
Isola di Capraia - area terrestre e marina 45475 Italy    
Isola di Gorgona - area terrestre e marina 36616 Italy    
Komandorsk Biosphere Reserve 9016082 Kamchatka Krai , Russia    
Limestone Coast of South West Wales/ Arfordir Calchfaen de Orllewin Cymru 3940 Wales, United Kingdom  
Morecambe Bay 151985 England, United Kingdom
Morfa Harlech a Morfa Dyffryn 2626 Wales, United Kingdom
North Bull Island Nature Reserve IV 3544 Ireland  
Pembrokeshire Marine/ Sir Benfro Forol 341177 Wales, United Kingdom  
Point Reyes National Seashore II 27068 California, United States
Redwood National Park II 77867 California, United States
Reserva de la Biosfera El Vizcaino Biosphere Reserve VI 6176727 Mexico  
Solway Firth 107829 England/Scotland, United Kingdom
Torre Manfria, Biviere e Piana di Gela 44096 Italy  
Tsitsikamma National Park II 34343 Southern Cape, South Africa  
Y Fenai a Bae Conwy/ Menai Strait and Conwy Bay 65440 Wales, United Kingdom  

Prey / Diet

Abraliopsis morisii[3]
Ancistrocheirus lesueurii (sharpear enope squid)[3]
Argonauta argo (greater argonaut)[3]
Brachioteuthis riisei (common arm squid)[3]
Callistoctopus macropus (Atlantic white-spotted octopus)[4]
Chiroteuthis veranii (Long-armed Squid)[5]
Eledone cirrhosa (Curled octopus)[3]
Galiteuthis armata (armed cranch squid)[4]
Gonatus fabricii (boreoatlantic armhook squid)[5]
Heteroteuthis dispar (odd bobtail squid)[6]
Histioteuthis bonnellii (umbrella squid)[3]
Histioteuthis reversa (Reverse Jewell Squid)[3]
Illex coindetii (southern shortfin squid)[3]
Loligo vulgaris (European Squid)[4]
Octopoteuthis sicula (Ruppell's octopus squid)[5]
Octopus salutii (spider octopus)[4]
Octopus vulgaris (common octopus)[4]
Ocythoe tuberculata (Tuberculate Pelagic Octopus)[6]
Ommastrephes bartramii (red flying squid)[4]
Onychoteuthis aequimanus[4]
Onychoteuthis banksii (common clubhook squid)[3]
Pyrosoma atlanticum[4]
Salpa fusiformis[4]
Sepia officinalis (common or european cuttlefish)[4]
Soestia zonaria[4]
Todarodes sagittatus (European flying squid)[3]
Todaropsis eblanae (Lesser Flying Squid)[3]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Alepisaurus ferox (Wolffish)2
Arctocephalus galapagoensis (Galapagos Fur Seal)1
Arctocephalus philippii (Juan Fernández Fur Seal)1
Arctocephalus pusillus (Brown Fur Seal)2
Arctocephalus townsendi (Guadalupe Fur Seal)1
Aristaeomorpha foliacea (giant gamba prawn)1
Auxis rochei (bonitou)1
Beryx splendens (Alfonsin)1
Callorhinus ursinus (Northern Fur Seal)1
Carcharhinus signatus (Shark)1
Coryphaena hippurus (Mahi-mahi)8
Delphinus delphis (Short-beaked Saddleback Dolphin)1
Diomedea exulans (Wandering Albatross)3
Fratercula arctica (Atlantic Puffin)1
Gadus morhua (rock cod)3
Genypterus capensis (Kingklip)1
Globicephala macrorhynchus (Short-finned Pilot Whale)1
Globicephala melas (Long-finned Pilot Whale)6
Hyperoodon ampullatus (Northern Bottlenose Whale)5
Hyperoodon planifrons (Southern Bottlenose Whale)1
Kajikia albida (Marlin)1
Kogia breviceps (Pygmy Sperm Whale)1
Kogia sima (Dwarf Sperm Whale)1
Lagenodelphis hosei (Fraser's Dolphin)1
Lagenorhynchus albirostris (White-beaked Dolphin)1
Leucoraja naevus (Cuckoo ray)1
Melanogrammus aeglefinus (Smokie)1
Mesoplodon densirostris (Blainville's Beaked Whale)1
Notorynchus cepedianus (Tiger shark)1
Orcinus orca (Killer Whale)1
Phoebastria immutabilis (Laysan Albatross)1
Physeter macrocephalus (Sperm Whale)5
Pollachius virens (Sillock)1
Polyprion americanus (Wreck-fish)1
Prionace glauca (Tribon blou)4
Pterodroma phaeopygia (Galapagos Petrel)2
Pterodroma ultima (Murphy's Petrel)2
Raja clavata (Roker)2
Reinhardtius hippoglossoides (Turbot)1
Stenella attenuata (Pantropical Spotted Dolphin)1
Stenella coeruleoalba (Striped Dolphin)2
Tetrapturus pfluegeri (Longbill spearfish)2
Thunnus alalunga (longfinned albacore)5
Thunnus albacares (Yellowfin-tuna)1
Thunnus thynnus (horse mackerel)1
Xiphias gladius (Swordfish)8
Ziphius cavirostris (Cuvier's Beaked Whale)7


Parasitized by 
Anisakis physeteris <Unverified Name>[7]
Anisakis simplex[7]
Campula palliata[7]
Crassicauda grampicola <Unverified Name>[7]
Diphyllobothrium stemmacephalum[7]
Hadwenius tursionis[7]
Monorygma grimaldii[7]
Nasitrema gondo <Unverified Name>[7]
Pholeter gastrophilus[7]
Phyllobothrium delphini[7]
Phyllobothrium grimaldii <Unverified Name>[7]
Scolex pleuronectis <Unverified Name>[7]
Stenurus globicephalae <Unverified Name>[7]
Stenurus minor[7]
Trigonocotyle lintoni[7]

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Baiji Dolphinarium, Inst. of Hydrobiol
Kamogawa Sea World

Range Map

East Pacific; Eastern Atlantic Ocean; Indo-West Pacific; Western Atlantic Ocean;



Attributes / relations provided by
1de 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
2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
3Diet of Risso’s dolphin (Grampus griseus) in the western Mediterranean Sea, CARMEN BLANCO, M ÁNGELES RADUÁN and JUAN ANTONIO RAGA, SCIENTIA MARINA 70 (3) September 2006, 407-411, Barcelona (Spain)
4Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
5Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
6CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
7Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Protected Areas provided by Biological Inventories of the World's Protected Areas in cooperation between the Information Center for the Environment at the University of California, Davis and numerous collaborators.
Natura 2000, UK data: © Crown copyright and database right [2010] All rights reserved. Ordnance Survey Licence number 100017955
Specially protected natural territories of the Russian Federation, Ministry of Natural Resources and Environment of the Russian Federation
GBIF Global Biodiversity Information Facility
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access