Results 11 to 20 of about 15,184 (259)

Ecological Factors and Diversification among Neotropical Characiforms [PDF]

open access: yesInternational Journal of Ecology, 2012
Morphological and DNA sequence data has been used to propose hypotheses of relationships within the Characiformes with minimal comparative discussion of causes underpinning the major intraordinal diversification patterns.
Duque Escobar, Santiago Roberto   +5 more
core   +7 more sources

Checklist of the species of the Order Characiformes (Teleostei: Ostariophysi)

open access: yesNeotropical Ichthyology
A checklist of recent and fossil fishes of the Order Characiformes is presented herein and believed to be complete through 2022. A total of 47 collaborators checked and provided information about their taxa of expertise.
Mônica Toledo-Piza   +47 more
doaj   +4 more sources

Weight-Length Ratio of Piranhas <i>Serrasalmus</i> (Characiformes, Serrasalmidae) in Bolivia: Relationships to Molecular Divergence and Maximum Size? [PDF]

open access: yesEcol Evol
This study presents WLRs of nine piranha or palometa fish species of genus Serrasalmus present in the Amazon and La Plata basins of Bolivia and compares differences with genetic divergence (mtDNA COI locus) and the observed maximum size. All species showed an exponential (power type) growth pattern, and all WLRs were significantly different among all ...
Carvajal-Vallejos FM   +3 more
europepmc   +2 more sources

External Morphology of Leporinus oliveirai (Characiformes: Anostomidae) During Early Life Stages. [PDF]

open access: yesJ Morphol
Herein, we describe the early development of Leporinus oliveirai, a recently described species, documenting its external morphology with photographs and illustrations. The ontogeny of L. oliveirai is compared with other anostomids and developmental patterns are described for the family.
Ito ISB   +4 more
europepmc   +2 more sources

A new species of Characidium (Characiformes: Crenuchidae) from the Iguaçu National Park, Rio Iguaçu basin, Paraná, Brazil. [PDF]

open access: yesJ Fish Biol
Abstract A new species of Characidium is described from the Iguaçu National Park, Brazil. The new species can be diagnosed from the congeners by the absence of conspicuous vertical bars, blotches and spots along the sides of the body, the presence of a scaled isthmus and adipose fin, a series of scales below lateral line and the presence of a thin dark
Stabile BHM   +3 more
europepmc   +2 more sources

Genetic variability in five species of Anostomidae (Ostariophysi - Characiformes) [PDF]

open access: goldGenetics and Molecular Biology, 1999
Genetic variability was studied in five fish species (Anostomidae): Schizodon intermedius and S. nasutus and Leporinus friderici, L. elongatus and L. obtusidens, collected at one location on the Tibagi River (Paraná, Brazil). The protein data from seven systems coded collectively for 19 loci in the liver, muscle and heart.
Lucimara Chiari   +1 more
openalex   +7 more sources

Nuevo hospedador de Lernaea cf. cyprinacea (L.) (Copepoda: Lernaeidae) en Argentina [PDF]

open access: yesActa Zoológica Lilloana, 2014
Se registra por primera vez a Lernaea cf. cyprinacea (L.), copépodo ecto- parásito en Astyanax hermosus Miquelarena, Protogino y López, 2005 (Teleostei: Characiformes: Characidae). El hospedador fue capturado en el río Cosquín (Depto.
Geraldine Ramallo, Guillermo Terán
doaj   +2 more sources

First report of four characiform fishes (Ostariophysi: Characiformes) for Uruguay [PDF]

open access: yesCheck List, 2013
In this article the authors present the first report of four characiform fish species for Uruguay, extending their current distribution to the middle and lower Uruguay River basin: Astyanax saguazu Casciotta, Almirón and Azpelicueta, 2003; Hypobrycon poi Almirón, Casciotta, Azpelicueta and Cione, 2001; Leporinus amae Gody, 1980; Cyphocharax saladensis (
Serra, W.S.   +6 more
openaire   +4 more sources

Ontogeny of the Skeleton of Leporinus oliveirai (Characiformes, Anotomidae). [PDF]

open access: yesJ Morphol
ABSTRACTThe skeleton is a rich source of characters used in phylogenetic studies of teleost fishes. However, the development of bones was studied in a limited number of species and few studies have been published describing the ontogeny of the Characiformes skeleton.
Boaretto MP   +2 more
europepmc   +3 more sources

The complete mitochondrial genome of Hemigrammus bleheri (Characiformes: Hemigrammus) and phylogenetic studies of Characiformes [PDF]

open access: yesMitochondrial DNA Part B, 2019
Complete mitochondrial genome of the characiform fish Hemigrammus bleheri was characterized in the present study. The whole mitogenome was 17,021 bp in size and consisted of 13 protein-coding genes (PCGs), 22 tRNAs, 2 rRNAs genes, a control region, and origin of light-strand replication.
Kehua Zhu   +7 more
openaire   +4 more sources

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