| whistle comparison of four delphinid species in southeastern brazil. | the present study evaluates variations in frequency and duration parameters of whistles of four dolphin species (sotalia guianensis, steno bredanensis, stenella frontalis, and tursiops truncatus), recorded in the rio de janeiro state coast, southeastern brazil. a total of 487 whistles were analyzed. acoustic parameters of the whistles were classified to species by discriminant function analysis. overall classification score was 72.5%, with the highest classification score obtained for whistles o ... | 2016 | 27250196 |
| nontargeted screening of halogenated organic compounds in bottlenose dolphins (tursiops truncatus) from rio de janeiro, brazil. | to catalog the diversity and abundance of halogenated organic compounds (hocs) accumulating in high trophic marine species from the southwestern atlantic ocean, tissue from bottlenose dolphins (tursiops truncatus) stranded or incidentally captured along the coast of rio de janeiro, brazil, were analyzed by a nontargeted approach based on gc×gc/tof-ms. a total of 158 individual hocs from 32 different structural classes were detected in the blubber of 4 adult male t. truncatus. nearly 90% of the d ... | 2017 | 28055195 |
| small cetaceans found stranded or accidentally captured in southeastern brazil: bioindicators of essential and non-essential trace elements in the environment. | essential (cu, mn, se and zn) and non-essential (cd and hg) elements were analyzed in the hepatic tissue of 22 individuals of seven different species of small cetaceans (feresa attenuata; orcinus orca; pontoporia blainvillei; sotalia guianensis; stenella frontalis; steno bredanensis; tursiops truncatus) accidentally caught in fishing nets or found stranded along the northern coast of the state of rio de janeiro, brazil, between 2001 and 2010. atlantic spotted dolphin (s. frontalis) showed the hi ... | 2013 | 23993648 |
| mercury, selenium and stable isotopes in four small cetaceans from the southeastern brazilian coast: influence of feeding strategy. | dolphins are good bioindicators of the contamination status of marine ecosystems, since their dietary and habitat plasticity in both coastal and offshore ecotypes provide information on the trace elements levels originated from natural and anthropogenic sources. in this context, this study aimed to investigate provides mercury (hg), selenium (se) levels, trophic ecology and feeding environments of four small cetaceans (tursiops truncatus, steno bredanensis, sotalia guianensis and pontoporia blai ... | 2016 | 27593348 |