Product Code Database
Boto is a Portuguese name given to several types of and native to the Amazon Forest and the Orinoco River tributaries. A few botos exist exclusively in fresh water, and these are often considered primitive dolphins. The Boto dolphin is usually pink in color and tends to become more pink in age. The degree of pinkness would be a sign of maturity in males and could therefore have the same display function as antlers in red deer or the tusk in narwhals. They become more pink in age because of scar tissue that takes over their whole body. They also lose some of their pigment throughout their adolescence, turning them light pink.
The genus Sotalia is divided into two species. The costero ( S. guianensis) is distributed in the Atlantic, from Tramandaí, Rio Grande do Sul, Brazil, and northwards. The tucuxi ( S. fluviatilis) lives in the of the Amazon.
Burmeister's porpoise is marine and lives from Santa Catarina to the south.
The Amazon river dolphin ( Inia geoffrensis) thrives in fresh water, is endemic to the Amazon basin, and is placed in the Endangered category of the IUCN. Database entry includes a lengthy justification of why this species is data-deficient.
The Araguaian river dolphin ( I. araguaiaensis) is a newly identified species native to the Araguaia River-Tocantins River basin of Brazil.
The La Plata dolphin ( Pontoporia blainvillei), another vulnerable Brazilian denizen, is a marine river dolphin that ranges from Espírito Santo, Brazil, to the south.
|
|
