Microstructural chromosome reorganization in the genus Trichomycterus (Siluriformes: Trichomycteridae)
نویسندگان
چکیده
منابع مشابه
Living in the waterfalls: A new species of Trichomycterus (Siluriformes: Trichomycteridae) from Tabay stream, Misiones, Argentina
A new species assigned to the genus Trichomycterus from the area of the waterfalls of Tabay stream, Paraná River basin, Misiones, Argentina, is described. Trichomycterus ytororo sp. nov. is distinguished from all other species in the genus by the presence of 31-35 dorsal procurrent caudal-fin rays and the combination of some external characters such as: coloration, number of pectoral-fin rays a...
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The aim of this work was to characterise the population of Trichomycterus sp. in Passa Cinco stream, regarding length structure, sex ratio, diet and reproductive aspects, in accordance with drought and rainy season periods and longitudinal gradient, as well as to analyse its corporal condition in a temporal dimension. Six samplings were accomplished with the use of electric fishing equipment in...
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Trichomycterus areolatus Valenciennes, 1846 is a small endemic catfish inhabiting the Andean river basins of Chile. In this study, the morphological variability of three T. areolatus populations, collected in two river basins from southern Chile, was assessed with multivariate analyses, including principal component analysis (PCA) and discriminant function analysis (DFA). It is hypothesized tha...
متن کاملA new species of Ammoglanis (Siluriformes: Trichomycteridae) from Venezuela
A new miniaturized species of the trichomycterid genus Ammoglanis is described from the Rio Orinoco basin in Venezuela. It is distinguished from its only congener, A. diaphanus, by: a banded color pattern formed by internal chromatophores; 5 or 6 pectoral-fin rays (7 in A. diaphanus), 5/5 principal caudal-fin rays (6/6 in A. diaphanus), ii+6 dorsal-fin rays (iii+6+i in A. diaphanus), 30 or 31 v...
متن کاملA new species of Ituglanis (Siluriformes: Trichomycteridae) from the rio Uruguai basin, southern Brazil
A new species of Ituglanis associated to the grasslands of the Pampa biome is described from the rio Uruguai basin, southern Brazil. The new species is distinguished from its congeners by the low number of ribs and by a unique color pattern composed of an outer layer with scattered round black blotches equivalent in size to the eye circumference over a reddish brown background on the lateral su...
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ژورنال
عنوان ژورنال: Neotropical Ichthyology
سال: 2016
ISSN: 1679-6225
DOI: 10.1590/1982-0224-20150084