Abstract
The species Sotalia fluviatilis is little known in the Amazon region, especially in the state of Amapa, where few studies have been conducted. The present study is a contribution to the knowledge on the behavioral pattern and perception of boatmen on S. fluviatilis in Port of Acai. The study was carried out in a fixed location at Port of Acai. The observations were conducted monthly from July 2013 to December 2013 in the morning, along with interviews with boatmen, when a survey was applied as well as an Informed Consent Form – ICF. The behavioral patterns of S. fluviatilis most frequently observed were slow movement, fast movement, and foraging. When inquired about S. fluviatilis , most boatmen reported frequently seeing animals foraging around the port in groups of two or three, most often during the high tide, supporting in loco observations. According to boatmen, S. fluviatilis , when observed, is near the margins of the river, and that the presence of this species is associated to the food discarded by local fish vendors. They also described sighting fewer animals compared to five years ago. Therefore, the present study aims at providing information on the areas of occurrence of S. fluviatilis that could assist in conservation actions of this species, given the imminent construction of a nearby port for transporting soy. Keywords: Popular knowledge; Ethology; northern region; cetaceans.
Highlights
The species Sotalia fluviatilis is little known in the Amazon region, especially in the state of Amapá, where few studies have been conducted
A gestação é de cerca de 10 meses e os nascimentos ocorrem durante a estação de águas baixas (DA SILVA et al, 2008)
O tucuxi possui vértebras cervicais fundidas e o corpo mais rígido que o boto, assim alcança velocidades maiores em ambientes abertos, mas o impede de explorar a floresta alagada (DA SILVA et al, 2008)
Summary
Cujas coordenadas geográficas são determinadas pela latitude 00o03'30”S e longitude 51°17'54''W, com altitude de 7,5m (Figura 1a). É o segundo município mais importante do Estado, contando com uma população estimada de 101.262 habitantes (IBGE, 2013). Á beira do rio Amazonas localiza-se o Porto do Açaí, onde há recorrente tráfego de embarcações e pessoas. Há comercialização de pescado, açaí in natura, bem como a constante travessia de produtos e pessoas entre a Santana e a Ilha de Santana através de pequenas embarcações (Figura 1b). A) Estado do Amapá - Município de Santana. A estrela indica o local de amostragem da espécie em estudo, Sotalia fluviatilis. A) State of Amapá Municipality of Santana. The star indicates the kind of sampling site under study, Sotalia fluviatilis.
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