| chromosomal evidence of downstream dispersal of astyanax fasciatus (characiformes, characidae) associated with river shed interconnection. | in the 1960s, as a part of the construction of the furnas hydroelectric power dam, minas gerais, brazil, the rio piumhi was diverted from the rio grande drainage to the são francisco river basin, with the resulting introduction of species from one basin to the other. chromosomal characteristics of various populations of astyanax fasciatus sensu eigenmann from the transect region were studied using cytogenetic techniques, with the goal to identify and map the dispersal of invasive species in the ... | 2009 | 19641999 |
| nematodes of astyanax fasciatus (actinopterygii: characidae) and their parasitic indices in the são francisco river, brazil. | the endoparasite fauna of astyanax fasciatus from the upper são francisco river was investigated and ecological parameters and morphological and morphometric data on the parasites are presented. a total of 74 specimens of banded astyanax were collected downstream from the três marias dam, municipality of três marias, minas gerais (18°12'32"s, 45°15'41"w) in january 2011 and january 2012. eleven taxa of nematoda were found: contracaecum sp.; hysterothylacium sp.; goezia sp.; brevimulticaecum sp.; ... | 2017 | 28177039 |
| the impact of organochlorines and metals on wild fish living in a tropical hydroelectric reservoir: bioaccumulation and histopathological biomarkers. | this study evaluates the contaminants in water and their bioaccumulation in the gills and liver of two ecologically distinct fish species, astyanax fasciatus and pimelodus maculatus, living in the reservoir of the furnas hydroelectric power station located in minas gerais in the southeastern brazil. the histological alterations in these organs are also examined. water and fish were collected in june and december from five sites (site 1: fu10, site 2: fu20, site 3: fu30, site 4: fu40 and site 5: ... | 2014 | 25137379 |