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The Amazon river dolphin (Inia geoffrensis), also known as the boto, bufeo or pink river dolphin, is a species of toothed whale endemic to South America and is classified in the family Iniidae. Three subspecies are currently recognized: I. g. geoffrensis (Amazon river dolphin), I. g. boliviensis ( Bolivian river dolphin ) and I. g. humboldtiana ...
Boto is a Portuguese name given to several types of dolphins and river dolphins native to the Amazon and the Orinoco River tributaries. A few botos exist exclusively in fresh water , and these are often considered primitive dolphins.
River dolphins are rather small, ranging in size from the 5-foot (1.5 m) long South Asian river dolphin to the 8-foot (2.4 m) and 220-pound (100 kg) Amazon river dolphin. They all have female-biased sexual dimorphism apart from Amazon river dolphin, with the females being larger than the males.
The study documents 36 instances of “aerial urination” by boto between 2014 and 2018 and records the sequence, duration and social context of the behaviour. Two-thirds of the documented cases ...
Iniidae is a family of river dolphins containing one living genus, Inia, and four extinct genera.The extant genus inhabits the river basins of South America, but the family formerly had a wider presence across the Atlantic Ocean.
The recognition of I. araguaiaensis as a distinct species is still debated. It was originally distinguished from the Amazon river dolphin (Inia geoffrensis) in January 2014 [2] [3] on the basis of nuclear microsatellite and mitochondrial DNA data as well as differences in skull morphology (it generally has a wider skull).
Despite being found in geographic locations similar to those of 'true' river dolphins such as the boto, the tucuxi is not closely related to them genetically. Instead, it is classed in the oceanic dolphin family (Delphinidae). Physically, the species resembles the bottlenose dolphins, but differs sufficiently to be placed in a separate genus ...
Articles relating to the Iniidae, a family of river dolphins containing one living genus, Inia, and four extinct genera. The extant genus inhabits the river basins of South America , but the family formerly had a wider presence across the Atlantic Ocean .