Inia
| Inia | |
|---|---|
| File:Inia Duisburg zoo crop2.jpg | |
| An Amazon river dolphin at the Duisburg Zoo. | |
| File:Amazon river dolphin size.svg | |
| Size compared to an average human | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Artiodactyla |
| Infraorder: | Cetacea |
| Family: | Iniidae |
| Genus: | Inia d'Orbigny, 1834 |
| Type species | |
| Inia boliviensis[1] d'Orbigny, 1834
| |
| Species | |
| |
| File:Inia range map PLoS ONE.jpg | |
| Inia spp. ranges. I. araguaiaensis, I. geoffrensis and I. boliviensis are blue, light green and purple, respectively. I. humboldtiana is grouped with geoffrensis. | |
Inia is a genus of river dolphins from South America, containing one to four species.
Taxonomy
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The genus was described by Alcide d'Orbigny in 1834 when Delphinus geoffrensis, described by Henri Marie Ducrotay de Blainville in 1817, was recognized to be a unique taxon. D'Orbigny also described Inia boliviensis as type species of the genus.[2] A 1998 classification listed a single species, Inia geoffrensis, in the genus Inia, with three recognized subspecies.[3] Most of the scientific community accepted this single species classification, as does the IUCN.[4] As of 2016 the Committee on Taxonomy of the Society for Marine Mammalogy considers the genus Inia to contain one species with only two subspecies: the Bolivian (I. g. boliviensis) and the Amazon (I. g. geoffrensis) subspecies.[5] In 2014, the population in the Araguaia-Tocantins basin was proposed to define an additional species, Inia araguaiaensis,[6] but this remains debated. The American Society of Mammalogists recognizes the highest number of species at four, although this is only tentative, pending further studies which could either confirm or deny the classification.[7]
American Society of Mammalogists Classification
Genus Inia
- Species Inia araguaiaensis – Araguaian river dolphin
- Species Inia boliviensis – Bolivian river dolphin
- Species Inia geoffrensis – Amazon river dolphin
- Species Inia humboldtiana – Orinoco river dolphin
IUCN Classification
Genus Inia
- Species Inia geoffrensis – Amazon river dolphin
- Amazon Subspecies I. g. geoffrensis
- Bolivian Subspecies I. g. boliviensis
- Orinoco Subspecies I. g. humboldtiana
Society For Marine Mammalogy Classification
- Genus Inia
- Species Inia geoffrensis – Amazon river dolphin
- Amazon Subspecies I. g. geoffrensis
- Bolivian Subspecies I. g. boliviensis
- Species Inia geoffrensis – Amazon river dolphin
References
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- General references
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- Juliet Clutton-Brock (2000). Mammals, 381 pages.
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