Animalia > Chordata > Mammalia > Cetacea > Delphinidae > Lagenorhynchus > Lagenorhynchus cruciger
 

Lagenorhynchus cruciger (Hourglass Dolphin)

Synonyms: Delphinus albigena; Delphinus bivitattus; Delphinus cruciger; Lagenorhynchus clanculus; Lagenorhynchus wilsoni

Wikipedia Abstract

The hourglass dolphin (Lagenorhynchus cruciger) is a small dolphin in the family Delphinidae that inhabits Antarctic and subantarctic waters. The dolphin has rarely been seen. It was identified as a new species by Jean René Constant Quoy and Joseph Paul Gaimard in 1824 from a drawing made in the South Pacific in 1820. It is the only cetacean to have been widely accepted as a species solely on witness accounts. By 1960, despite decades of whaling in the Southern Ocean, only three specimens had been recovered. As of 2010 only 6 complete and 14 partial specimens had been examined. Further information was obtained from 4 strandings and boats which searched for the dolphins in areas rarely visited by ships.
View Wikipedia Record: Lagenorhynchus cruciger

EDGE Analysis

Uniqueness Scale: Similiar (0) 
4
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
24
 Unique & Vulnerable (100)
ED Score: 8.85
EDGE Score: 2.29

Attributes

Adult Weight [2]  242.51 lbs (110.00 kg)
Diet [3]  Carnivore (Invertebrates), Piscivore
Diet - Fish [3]  60 %
Diet - Invertibrates [3]  40 %
Forages - Marine [3]  100 %
Water Biome [1]  Pelagic

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Palmer LTER Site Long Term Ecological Research   Antarctica    
Tierra Del Fuego National Park II 172861 Argentina

Prey / Diet

Electrona carlsbergi (Electron subantarctic)[4]
Euphausia superba (Antarctic krill)[4]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Aphrodroma brevirostris (Kerguelen Petrel)1
Aptenodytes forsteri (Emperor Penguin)1
Aptenodytes patagonicus (King Penguin)1
Arctocephalus gazella (Antarctic Fur Seal)1
Balaenoptera acutorostrata (Minke Whale)1
Balaenoptera bonaerensis (Antarctic Minke Whale)1
Bathydraco marri (Deepwater dragon)1
Chaenocephalus aceratus (Scotian icefish)1
Champsocephalus esox (Pike icefish)1
Champsocephalus gunnari (Mackerel icefish)1
Cygnodraco mawsoni (Mawson's dragonfish)1
Daption capense (Cape Petrel)1
Dissostichus eleginoides (Patagonsky klykach)2
Dissostichus mawsoni (Antarctic blenny)1
Electrona carlsbergi (Electron subantarctic)1
Eudyptes chrysolophus (Macaroni Penguin)2
Fulmarus glacialoides (Southern Fulmar)2
Gobionotothen angustifrons (Narrowhead rockcod)1
Gobionotothen gibberifrons (Humped rockcod)1
Gymnodraco acuticeps (Ploughfish)1
Gymnoscopelus braueri (Lanternfish)1
Gymnoscopelus nicholsi (Nichol's lanternfish)1
Gymnoscopelus opisthopterus (Lanternfish)1
Halobaena caerulea (Blue Petrel)1
Larus dominicanus (Kelp Gull)1
Lepidonotothen squamifrons (Grey rockcod)2
Lindbergichthys nudifrons (Yellowfin notie)1
Lobodon carcinophaga (Crabeater Seal)1
Macronectes giganteus (Southern Giant Petrel)1
Megaptera novaeangliae (Humpback Whale)1
Mirounga leonina (Southern Elephant Seal)1
Nototheniops larseni (Painted notie)1
Oceanites oceanicus (Wilson's Storm-Petrel)1
Pachyptila belcheri (Slender-billed Prion)1
Pagodroma nivea (Snow Petrel)1
Parachaenichthys georgianus (Antarctic dragonfish)1
Phoebetria palpebrata (Light-mantled Albatross)1
Physeter macrocephalus (Sperm Whale)1
Procellaria aequinoctialis (White-chinned Petrel)1
Pseudochaenichthys georgianus (South Georgia icefish)1
Pygoscelis adeliae (Adelie Penguin)1
Pygoscelis antarcticus (Chinstrap Penguin)2
Pygoscelis papua (Gentoo Penguin)1
Stercorarius maccormicki (South Polar Skua)1
Sterna vittata (Antarctic Tern)1
Thalassarche chrysostoma (Grey-headed Albatross)1
Thalassarche melanophris (Black-browed Albatross)1
Trematomus hansoni (Striped rockcod)1
Vomeridens infuscipinnis (Antarctic dragonfish)1

Predators

Orcinus orca (Killer Whale)[5]

Consumers

Parasitized by 
Anisakis simplex[6]
Anisakis typica[6]
Phyllobothrium delphini[6]
Synthesium subtile[6]
Trigonocotyle prudhoei[6]

Range Map

Antarctica/Southern Ocean;

Photos

Citations

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 animaldiversity.org
2Felisa A. Smith, S. Kathleen Lyons, S. K. Morgan Ernest, Kate E. Jones, Dawn M. Kaufman, Tamar Dayan, Pablo A. Marquet, James H. Brown, and John P. Haskell. 2003. Body mass of late Quaternary mammals. Ecology 84:3403
3Hamish 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
4Towards the trophic structure of the Bouvet Island marine ecosystem, U. Jacob, T. Brey, I. Fetzer, S. Kaehler, K. Mintenbeck, K. Dunton, K. Beyer, U. Struck , E.A. Pakhomov and W.E. Arntz, Polar Biology, 29 (2). pp. 106-113 (2006)
5Jorrit 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.
6Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
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Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access