| mercury levels in muscle of six species of turtles eaten by people along the rio negro of the amazon basin. | mercury levels in the amazon river are generally high, but there are no published studies on hg levels in turtles from the region. in this study, levels of hg were examined in the muscle of six species of turtles in the rio negro in the amazon basin of brazil, including podocnemis unifilis, podocnemis expansa, podocnemis erythrocephala, podocnemis sextuberculata, peltocephalus dumerilianus, and chelus fimbriatus. it is important to analyze hg levels in chelonians in this region because of the po ... | 2010 | 19621205 |
| population genetics analysis of podocnemis sextuberculata (testudines, podocnemidae): lack of population structure in the central amazon basin. | the chelonians are, in general, important for the economy of the traditional populations of the amazon region, especially as a source of animal protein. furthermore, sub-products, such as eggs and fat, are utilized in the manufacture of cosmetics, and the plastron and carapace are used in the manufacture of adornments. the freshwater turtle species podocnemis sextuberculata, locally known as "iaçá" or "pitiú", is widely distributed in the amazon basin in brazil and also in colombia and peru. thi ... | 2011 | 21823088 |
| arsenic, cadmium, chromium, lead, mercury, and selenium levels in blood of four species of turtles from the amazon in brazil. | using blood as a method of assessing metal levels in turtles may be useful for populations that are threatened or endangered or are decreasing. in this study the levels of arsenic (as), cadmium (cd), chromium (cr), lead (pb), mercury (hg), and selenium (se) in blood of four species of turtles from the tributaries of the rio negro in the amazon of brazil were examined. the turtles included the six-tubercled amazon (river) turtle (podocnemis sextuberculata), red-headed amazon (river) turtle (podoc ... | 2010 | 19953418 |