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

Lagenorhynchus cruciger (Hourglass Dolphin)

Synonyms:

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
Learn more at EDGE of Existence programme

Attributes

Gestation [2]  1 year
Litter Size [2]  1
Maximum Longevity [2]  46 years
Snout to Vent Length [2]  5.904 feet (180 cm)
Water Biome [1]  Pelagic
Adult Weight [2]  192.74 lbs (87.425 kg)
Birth Weight [2]  12.864 lbs (5.835 kg)
Female Weight [2]  178.245 lbs (80.85 kg)
Male Weight [2]  207.236 lbs (94.00 kg)
Weight Dimorphism [2]  16.3 %
Diet [3]  Carnivore (Invertebrates), Piscivore
Diet - Fish [3]  60 %
Diet - Invertibrates [3]  40 %
Forages - Marine [3]  100 %
Female Maturity [2]  6 years
Male Maturity [2]  8 years 2 months

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

Predators

Orcinus orca (Killer Whale)[5]

Consumers

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

Range Map

External References

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
♦ 2Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 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
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0