Abstract
Sotalia fluviatilis known as tucuxi dolphins is considered the only dolphins exclusively fluvial. According to IBAMA, is classified as a species of insufficient data. The objective of this paper is to describe the frequency of occurrence of the species S. fluviatilis in Porto of Acai in Santana, Amapa. The study was conducted through on-site observations and the count of observations of individuals. For three months of activity on the field for 4 hours a week, there were 102 sightings, suggesting a habitat preference of these animals in that area of study. Keywords: Sotalia fluviatilis ; Delphinidae; Amazon basin.
Highlights
Sotalia fluviatilis known as tucuxi dolphins is considered the only dolphins exclusively fluvial
O presente estudo tem como objetivo descrever a frequência de ocorrência da espécie S. fluviatilis no Porto do Açaí, em Santana, Amapá
Nos meses de julho e setembro, os animais estiveram presentes em todos os dias amostrados (100%)
Summary
Sotalia fluviatilis known as tucuxi dolphins is considered the only dolphins exclusively fluvial. Dentre os cetáceos com ocorrência comprovada para a região norte do Brasil, podemos citar três espécies, sendo duas fluviais: Inia geoffrensis (BEST; SILVA, 1989; EMIM-LIMA et al, 2010) e Sotalia fluviatilis (EMIM-LIMA et al, 2007) e uma marinha, Sotalia guianensis (SICILIANO et al, 2005; EMIM-LIMA et al, 2010). Sotalia fluviatilis foi considerada como duas subespécies: Sotalia fluviatilis guianensis, que ocorre no litoral e Sotalia fluviatilis fluviatilis que ocorre nos rios.
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