Results 61 to 70 of about 5,643 (204)
Phylogeny of the family Characidae (Teleostei: Characiformes): from characters to taxonomy
Neotropical IchthyologyThe family Characidae is the most diverse among Neotropical fishes. Systematics of this family are mainly based on pre-cladistic papers, and only recently a phylogenetic hypothesis for Characidae was proposed by the author.
Juan Marcos Mirande
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Genetics and Molecular Biology, 2008 Characidae is one of the largest fish families of the Neotropical region, and presenting a pronounced morphological variability, certainly does not constitute a monophyletic group.
Wellington Adriano Moreira Peres +2 more
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Acta Biológica Colombiana, 2022 The Characiform fish species from the Tapyta Reserve and surrounding area, Caazapa, Paraguay, were inventoried during a year with electrofishing, netting, and trapping. A total of 20 species were registered, being Characidae the richest family.
Héctor Samuel Vera-Alcaraz +1 more
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Acta Scientiarum: Biological Sciences, 2007 Este trabalho descreve a ocorrência e a sazonalidade de parasitos em peixes de “pesque-pague” do município de Guariba, Estado de São Paulo, Brasil (21º15`22``S, 48º18`58``W e 595 m de altitude), durante o período de agosto de 2001 a julho de 2002.
Sergio Henrique Canello Schalch +2 more
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Ecology and Evolution, Volume 16, Issue 1, January 2026.This study successfully decoded the complete mitochondrial genomes of two Moenkhausia species, with total lengths of 16,439 and 16,461 bp, respectively. This study enhances genomic resources for Acestrorhamphidae and provides a foundation for investigating evolutionary mechanisms and developing molecular markers.
Cheng‐He Sun +4 more
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Caudal Spotting in the Beacon Fish (Hemigrammus ocellifer Characidae) [PDF]
Journal of Heredity, 2002 The beacon fish (Hemigrammus ocellifer) exhibits two phenotypes associated with spotting at the base of the caudal fin, with fish either possessing (H. o. ocellifer) or lacking (H. o. falsus) a prominent red spot in this region. Segregation patterns observed from the progenies of 15 different crosses support a hypothesis that caudal spotting in this ...
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Dos especies nuevas de Creptotrema (Digenea: Allocreadiidae) de America del Sur
Revista Mexicana de Biodiversidad, 2008 DOS ESPECIES NUEVAS DE DIGÉNEOS PERTENECIENTES A CREPTOTREMA TRAVASSOS, ARTIGAS Y PEREIRA, 1928 FUERON DESCRITAS DE EJEMPLARES DEPOSITADOS EN LA COLECCIÓN DE INVERTEBRADOS DEL MUSEO DE HISTORIA NATURAL DE GINEBRA, SUIZA. CREPTOTREMA LAMOTHEI N. SP.
STEPHEN S. CURRAN
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Ecology and Evolution, Volume 16, Issue 1, January 2026.From 2009 to 2025, we have recorded the physicochemical parameters of the water and the hydrological regimes at localities hosting Astyanax mexicanus cavefish and surface fish populations in Mexico. Sampling 13 caves and 30 surface stations revealed strong signatures of the two macrohabitats, but also significant differences in specific water ...
Laurent Legendre +5 more
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Environmental DNA, Volume 8, Issue 1, January–February 2026.This study used environmental DNA (eDNA) metabarcoding to assess vertebrate biodiversity in headwater streams of the Rio Santo Antônio basin, southeastern Brazil, a tributary of the Rio Doce. A total of 119 vertebrate OTUs were identified, with oxidation–reduction potential emerging as the strongest environmental predictor of species richness.
Larissa Moreira‐Silva +8 more
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B chromosomes in Astyanax scabripinnis (Pisces, Characidae) [PDF]
Heredity, 1992 A karyotypic analysis was carried out using conventional staining and C-banding in 32 specimens of Astyanax scabripinnis (Pisces, Characidae) from Campos do Jordao (Sao Paulo State, Brazil). Twenty-eight individuals (87.5 per cent of the sample studied) showed 1–2 extra B-chromosomes, similar in size and shape (metacentrics) to pair 1 of the karyotype,
Lara Bellintani Salvador +1 more
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