Results 21 to 30 of about 860,253 (247)
Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River. [PDF]
Conserv BiolAbstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Grinstead S +6 more
europepmc +2 more sources
Altitudinal variation for B chromosome frequency in the characid fish Astyanax scabripinnis [PDF]
Heredity, 2000 The analysis of three populations of the characid fish Astyanax scabripinnis located at different altitudes along the same stream has revealed the presence of a macro B chromosome in two high-altitude populations (1800 m and 1920 m) but its absence from a low-altitude population (700 m).
Daniela Morilha Néo +2 more
semanticscholar +3 more sources
Neotropical Ichthyology, 2023 Psalidodon jequitinhonhae was originally proposed as a variety of Tetragonopterus rutilus, based on the analysis of 14 specimens from the Jequitinhonha River, Brazil. In 1910 it was relocated in Astyanax, as A.
Victor de Queiroz +5 more
semanticscholar +1 more source
A new species of the micro snail genus Heleobia (Caenogastropoda, Cochliopidae) from Bahia, Brazil
Papéis Avulsos de Zoologia, 2021 The prey of a recent described characid fish, so far endemic of the small lake Pratinha (Iraquara, Bahia, Brazil), a small (~2.5 mm) lentic gastropod, revealed to be a new (possible endemic) species. It is herein formally described as Heleobia brucutu sp.
Luiz Ricardo L. Simone +1 more
doaj +1 more source
New records and distribution extension of Hyphessobrycon itaparicensis Lima & Costa, 2001 (Characiformes: Characidae) in coastal drainages of Sergipe state, northeastern Brazil [PDF]
Check List, 2014 The present study reports the first record of the small characid fish Hyphessobrycon itaparicensis Lima and Costa, 2001 in two coastal drainages of Sergipe State, Brazil.
Marcelo Brito +3 more
doaj +3 more sources
Fish biomarker responses to perturbation by drought in streams [PDF]
Neotropical Ichthyology, 2020 Drought can be viewd as a perturbation in running waters and fish are often trapped in isolated pools, where deterioration of water quality may be stressful.
Luciana de Souza Ondei +5 more
doaj +1 more source
Studies on the distribution, abundance, growth pattern and dietary habits of Brycinus nurse Ruppel, 1832 (Osteichthyes: Characidae) in the River Jamieson, Nigeria [PDF]
Acta Ichthyologica et Piscatoria, 2001 Aspects of the ecology of Brycinus nurse Ruppel, 1832 in the River Jamieson, Nigeria were studied. B. nurse constituted 19.8% of the characid catch and was unevenly distributed in the river with perennial occurrence in the downstream station.
R.B. Ikomi, F.D. Sikoki
doaj +3 more sources
European Journal of Taxonomy, 2018 The Astyanax orthodus species-group includes nine species: Astyanax boliviensis sp. nov., A. bopiensis nom. nov., A. embera sp. nov., A. gandhiae sp. nov., A. moorii comb. nov., A. orthodus, A. superbus, A. villwocki and A. yariguies comb. nov. The group
Raquel I. Riuz-C +4 more
doaj +1 more source
Neotropical Ichthyology, 2021 A new species of miniature fish of the characid genus Priocharax is described from a small lake near the rio Ipixuna, rio Purus drainage, Amazonas State, Brazil. It is distinguished from all congeners except P.
George Mendes Taliaferro Mattox +3 more
doaj +1 more source
Genetics and Molecular Biology, 2006 Fluorescence in situ hybridization (FISH) was undertaken in order to determinate the chromosomal distribution pattern of 18S and 5S ribosomal DNAs (rDNA) in four populations of the characid fish Astyanax altiparanae from the upper Paraná river basin ...
Carlos Alexandre Fernandes +1 more
doaj +1 more source