First occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Tocantins-Araguaia basin, Brazil

• Published in: Brazilian journal of biology Vol. 76; no. 4; pp. 1068 - 1069
• Main Authors: Puppin-Gonçalves, C T, Tenório, L X S, Neiva, A B, Martins-Silva, M J
• Format: Journal Article
• Language: English
• Published: Brazil Instituto Internacional de Ecologia 01-10-2016
• Subjects: Bivalvia; Freshwater; Mollusks; Rivers; South America; Brazil; Argentina, Cordoba, Tocantins R; Brazil, Distrito Federal; Brazil, Maranhao; Brazil, Parana Basin; Brazil, Goias; Brazil, Parana
• ISSN: 1519-6984; 1678-4375; 1678-4375
• DOI: 10.1590/1519-6984.08215

Anodontites tenebricosus (Lea, 1834) typically inhabits lotic environments, partially buried in sandy or gravel substrate in South America waters (Bonetto, 1967; Castellanos and Landoni, 1990). The species occurs in four Neotropical sub-regions, and, in Brazil, it has been mostly found in the Parana basin (Mansur and Pereira, 2006; Graf and Cummings, 2007; Bogan and Cummings, 2011; Troncon and Avelar, 2011). The Tocantins-Araguaia basin occupies 10.8% of Brazil, and reaches five Brazilian states and Distrito Federal. The Tocantins River rises in Goias state, Central Brazil, and its superior course is formed by two main tributaries, the rivers Maranhao and Parana. Nowadays, the water pumping for agriculture and industry uses are the mainly applications of the basin, turning critical the balance between water availability and its demand (ANA, 2013). The Brazilian inland aquatic ecosystems are in real danger. For the range of Tocantins-Araguaia basin, the main threats to the freshwater biodiversity are poor water treatment, deforestation, construction of dams and canals, intensive cattle ranching and predatory fisheries (Tundisi, 2003).