| <i>hypostomus velhochico</i>, a new keeled <i>hypostomus</i> lacépède, 1803 (siluriformes: loricariidae) from the rio são francisco basin in brazil. | hypostomus velhochico sp. n., is described from the rio são francisco basin, in the states of minas gerais and bahia, brazil. the new species is mainly distinguished from its congeners by a combination of characters such as slender bicuspid teeth, dentaries angled more than 90 degrees, conspicuous keels along lateral series of plates, small roundish dark spots, one plate bordering supraoccipital, spots aligned along lateral series of plates, and by attaining small to medium size. hypostomus velh ... | 2017 | 29245625 |
| pareiorhaphis vetula, a new armored catfish from the headwaters of the rio doce basin, brazil (siluriformes: loricariidae). | a new species of pareiorhaphis is described from the upper rio doce basin. the description is based on a series of specimens recently collected in small headwater tributaries to the rio guanhães, a tributary of the rio santo antonio, left bank of the rio doce in minas gerais state, eastern brazil. pareiorhaphis vetula, new species, is a small loricariid catfish with dark brown spots irregularly scattered over a brown background on the dorsal surface of body and along flanks. the new species diff ... | 2016 | 27470867 |
| henneguya cuniculator sp. nov., a parasite of spotted sorubim pseudoplatystoma corruscans in the são francisco basin, brazil. | henneguya cuniculator sp. nov. was found infecting spotted sorubim catfish pseudoplatystoma corruscans from the são francisco river, minas gerais, brazil. the parasites form elongated plasmodia of up to 1 cm in length in the gill filaments. mature spores were ellipsoidal from the frontal view, with total length of 29.4 ± 2.4 (mean ± sd, range 23.3-32.4) µm, body length of 12.1 ± 1.0 (10.0-14.7) µm, width of 4.8 ± 0.4 (4.0-5.9) µm, and tail length of 16.7 ± 2.0 (12.3-19.4) µm. from the lateral vi ... | 2014 | 24429472 |
| Monitoring water quality in reservoirs for human supply through multi-biomarker evaluation in tropical fish. | Paraíba do Sul River is located at a very densely inhabited region of Brazil crossing the three most industrialized states of the country (São Paulo, Minas Gerais and Rio de Janeiro states). As a result, industrial and farming residues as well as urban sewage are frequently disposed without appropriate treatment. The current study aimed at investigating the water quality in three reservoirs along the Paraíba do Sul River (Ilha dos Pombos, Santa Cecília and Santa Branca), through physiological, m ... | 2011 | 22179394 |
| first description of b chromosomes in the family auchenipteridae, parauchenipterus galeatus (siluriformes) of the são francisco river basin (mg, brazil). | b chromosomes are considered additional and non-essential; they likely originate from a chromosomes and follow a distinct evolution. in fish, approximately half of the neotropical species with b chromosomes are characiformes and 35% are siluriformes. there has been no report of b chromosomes in auchenipteridae until this moment. b chromosomes found in a population of parauchenipterus galeatus from the são francisco river basin in the state of minas gerais (brazil) were small, metacentric, totall ... | 2009 | 19394233 |