Biology:Inia
| Inia | |
|---|---|
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| An Amazon river dolphin at the Duisburg Zoo. | |
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| Size compared to an average human | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Artiodactyla |
| Infraorder: | Cetacea |
| Family: | Iniidae |
| Genus: | Inia d'Orbigny, 1834 |
| Type species | |
| Delphinus geoffrensis Blainville, 1817
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| Species | |
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| 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. A 1998 classification listed a single species, Inia geoffrensis, in the genus Inia, with three recognized subspecies.[1] Most of the scientific community accepted this single species classification, as does the IUCN.[2] 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.[3] In 2014, the population in the Araguaia-Tocantins basin was proposed to define an additional species, Inia araguaiaensis,[4] 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.[5]
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
- ↑ Rice, D. W. (1998). Marine mammals of the world: systematics and distribution. Society of Marine Mammalogy Special Publication Number 4. p. 231.
- ↑ da Silva, V.; Trujillo, F.; Martin, A.; Zerbini, A.N.; Crespo, E.; Aliaga-Rossel, E.; Reeves, R. (2018). "Inia geoffrensis". IUCN Red List of Threatened Species 2018: e.T10831A50358152. doi:10.2305/IUCN.UK.2018-2.RLTS.T10831A50358152.en. https://www.iucnredlist.org/species/10831/50358152.
- ↑ "List of Marine Mammal Species and Subspecies - Society for Marine Mammalogy" (in en-US). 13 November 2016. https://www.marinemammalscience.org/species-information/list-marine-mammal-species-subspecies/.
- ↑ Hrbek, Tomas; Da Silva, Vera Maria Ferreira; Dutra, Nicole; Gravena, Waleska; Martin, Anthony R.; Farias, Izeni Pires (2014-01-22). Turvey, Samuel T.. ed. "A New Species of River Dolphin from Brazil or: How Little Do We Know Our Biodiversity". PLOS ONE 9 (1): e83623. doi:10.1371/journal.pone.0083623. PMID 24465386. Bibcode: 2014PLoSO...983623H.
- ↑ Template:Cite mdd
- General references
- Montgomery, Sy (15 February 2009). Journey of the Pink Dolphins: An Amazon Quest. Chelsea Green Publishing. ISBN 9 78-1-60358-175-2. OCLC 42295841. https://archive.org/details/journeyofpinkdol00symo.
- Juliet Clutton-Brock (2000). Mammals, 381 pages.
Wikidata ☰ Q2896224 entry
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