Animalia > Chordata > Mammalia > Cetacea > Delphinidae > Sotalia > Sotalia fluviatilis

Sotalia fluviatilis (Tucuxi; Gray Dolphin; gray river dolphin)

Synonyms:

Wikipedia Abstract

The tucuxi (Sotalia fluviatilis), alternatively in Peru bufeo gris or bufeo negro, is a species of freshwater dolphin found in the rivers of the Amazon Basin. The word tucuxi is derived from the Tupi language word tuchuchi-ana, and has now been adopted as the species' common name. 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).
View Wikipedia Record: Sotalia fluviatilis

Endangered Species

Status: Endangered
View IUCN Record: Sotalia fluviatilis

EDGE Analysis

Uniqueness Scale: Similiar (0) 
3
 Unique (100)
Uniqueness & Vulnerability Scale: Not determined do to incomplete vulnerability data.
ED Score: 7.44
Learn more at EDGE of Existence programme

Attributes

Gestation [2]  10 months 25 days
Litter Size [2]  1
Maximum Longevity [4]  35 years
Migration [1]  Potamodromous
Snout to Vent Length [4]  6.134 feet (187 cm)
Water Biome [1]  Lakes and Ponds, Rivers and Streams, Coastal
Adult Weight [2]  102.884 lbs (46.667 kg)
Diet [3]  Carnivore (Invertebrates), Piscivore
Diet - Fish [3]  90 %
Diet - Invertibrates [3]  10 %
Forages - Marine [3]  100 %
Female Maturity [4]  6 years
Male Maturity [4]  6 years

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Mamirauá Sustainable Development Reserve State Sustainable Development Reserve VI 3260792 Amazonas, Brazil  
Maracá Ecological Reserve Ia 257554 Roraima, Brazil  

Biodiversity Hotspots

Name Location Endemic Species Website
Cerrado Brazil No

Prey / Diet

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Arctocephalus australis (South American Fur Seal)1
Ardea cocoi (Cocoi Heron)1
Noctilio leporinus (greater bulldog bat)1
Phalacrocorax brasilianus (Neotropic Cormorant)4
Pontoporia blainvillei (Franciscana)4

Consumers

Parasitized by 
Amphimerus lancea[9]
Anisakis typica[9]
Braunina cordiformis[9]
Halocercus brasiliensis[9]

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
♦ 2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
♦ 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
♦ 4Nathan 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
♦ 5Sotalia fluviatilis, Vera M. F. da Silva and R. C. Best, MAMMALIAN SPECIES No. 527, pp. 1-7 (1996)
♦ 6CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
♦ 7Insights on small cetacean feeding habits in southeastern Brazil, Marcos César de Oliveira Santos, Sergio Rosso, Roberta Aguiar dos Santos, Silvia Helena Bulizani Lucato, and Manuela Bassoi, Aquatic Mammals 2002, 28.1, 38-45
♦ 8Insights on small cetacean feeding habits in southeastern Brazil, Marcos César de Oliveira Santos, Sergio Rosso, Roberta Aguiar dos Santos, Silvia Helena Bulizani Lucato, and Manuela Bassio, Aquatic Mammals 2002, 28.1, 38-45
♦ 9Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
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