Inia

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Inia
Inia Duisburg zoo crop2.jpg
An Amazon river dolphin at the Duisburg Zoo.
Amazon river dolphin size.svg
Size compared to an average human
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Family: Iniidae
Genus: Inia
d'Orbigny, 1834
Species
  • See text
Inia range map PLoS ONE.jpg
Inia spp. ranges. I. araguaiaensis, I. geoffrensis and I. boliviensis are blue, light green and purple, respectively.

Inia is a genus of river dolphins from South America. It contains one to three species.

Taxonomy[edit]

Inia spp. skull

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[1] listed a single species, Inia geoffrensis, in the genus Inia, with three recognized subspecies. 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[3] considers the Genus Inia to contain one species with only two subspecies: the Bolivian (I. g. boliviensis) and the Amazon (I. g. geoffrensis) subspecies . In 2014, the population in the Araguaia-Tocantins basin was proposed to define an additional species, Inia araguaiaensis[4], but this remains debated.

IUCN Classification

Genus Inia

Society For Marine Mammalogy Classification

References[edit]

  1. ^ Rice, D. W. (1998). Marine mammals of the world: systematics and distribution. Society of Marine Mammalogy Special Publication Number 4. p. 231. 
  2. ^ R.R. Reeves; T.A. Jefferson; L. Karczmarski; K. Laidre; G. O'Corry-Crowe; L. Rojas-Bracho; E.R. Secchi; E. Slooten; B.D. Smith; J.Y. Wang; K. Zhou (2011). "Inia geoffrensis". IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature and Natural Resources. 
  3. ^ "List of Marine Mammal Species and Subspecies - Society for Marine Mammalogy". www.marinemammalscience.org. Retrieved 2017-09-01. 
  4. ^ 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: e83623. doi:10.1371/journal.pone.0083623. PMC 3898917Freely accessible. PMID 24465386. 
General references