Results 41 to 50 of about 243 (120)

Phylogenetics and diversification of the neotropical Serrasalminae (Ostariophysi: Characiformes) [PDF]

open access: yes, 2007
The phylogenetics and fossil record of Serrasalminae (piranhas and pacus) were investigated to reconstruct the evolutionary history of this diverse characiform lineage.
Dahdul, Wasila M
core  

Patterns of Nucleotide Change in Mitochondrial Ribosomal RNA Genes and the Phylogeny of Piranhas [PDF]

open access: yes, 1996
The patterns and rates of nucleotide substitution in mitochondrial ribosomal RNA genes are described and applied in a phylogenetic analysis of fishes of the subfamily Serrasalminae (Teleostei, Characiformes, Characidae).
Meyer, Axel   +5 more
core   +1 more source

Analise ultraestrutural da oogenese em Serrasalmus spilopleura (Teleostei, Characiformes, Serrasalminae) [PDF]

open access: yes, 2018
Orientador: Irani Quagio-GrassiottoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de BiologiaResumo: A ultraestrutura do desenvolvimento oocitário em 5errasalmus spilopleura (Teleostei, Characiformes, Serrasalminae), foi estudada ...
Guimarães, Ariene Cristina Dias
core  

Spermiogenesis and spermatozoa ultrastructure in the Serrasalminae (Ostariophysi: Characiformes) with further evidence on the relationships of the piranhas and pacus

open access: yesNeotropical Ichthyology
Spermatozoa and spermiogenesis ultrastructure were studied in the serrasalmine species Piaractus mesopotamicus, Mylossoma duriventre, Serrasalmus maculatus, and Metynnis mola and two distinct patterns may be recognized: the first common to Mylossoma ...
Priscila Gusmão-Pompiani   +3 more
doaj   +1 more source

Determination of genotoxic effect of trifluralin on Colossoma macropomum (Teleostei: Characidae: Serrasalminae, Cuvier, 1816) using a multibiomarker approach

open access: yesEcotoxicology and Environmental Contamination, 2017
The herbicide trifluralin is one of the most widely herbicides used in weed control. This study aims to evaluate the genotoxic potential of the trifluralin herbicide on the Colossoma macropomum (tambaqui) using a multi-biomarker approach. The C. macropomum is highly adapted and predominant species in a variety of water bodies in the delta region of the
Jaqueline Maria Silva   +8 more
openaire   +1 more source

Serrasalmidae Bleeker 1859 [PDF]

open access: yes, 2014
Family Serrasalmidae Bleeker 1859 Serrasalmi Swainson 1838:256 [ref. 4302] (no family-group name) Serrasalmoniformes Bleeker 1859d:XXXI [ref.
Laan, Richard Van Der   +2 more
core   +1 more source

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

open access: yesBrazilian Journal of Biology
This study aimed to identify shifts in the Serrasalmus brandtii Lütken, 1875 diet related to body size. Specimens were collected from April 1992 to January 1993 at the Cajuru Reservoir, in the Pará River, São Francisco River Basin, by seining the shore ...
A. K. Oliveira   +3 more
doaj   +1 more source

Food habits and morphological changes during ontogeny in three serrasalmin fish species of the Venezuela floodplains [PDF]

open access: yes, 2018
Se presenta información sobre la alimentación en tres especies de peces de la subfamilia Serrasalminae durante su crecimiento.Instituto de Zoología y Ecología Tropical y Escuela de Biología de la Universidad Central de ...
García, Carmen   +1 more
core  

Le bas Oyapock limite septentrionale ou simple étape dans la progression de la faune des poissons d'Amazonie occidentale [PDF]

open access: yes, 1999
Un ensemble, composé de huit espèces de Serrasalminae (Teleostei, Characidae), est régulièrement cité d'Amazonie centrale et de la partie occidentale du bassin amazonien, du sud de la Bolivie jusqu'en Colombie.
Jégu, Michel, Keith, P.
core   +2 more sources

Evaluación del polimorfismo por microsatélites en individuos de Piaractus brachypomus (Characidae, Serrasalminae) rovenientes del río Meta, Colombia Polymorphism evaluation by microsatellites in individuals of Piaractus brachypomus (Characidae, Serrasalminae) from Meta river, Colombia

open access: yesRevista Colombiana de Ciencias Pecuarias, 2006
En este estudio, cuatro microsatélites (Pme4, Pme5, Pme20, Pme21) fueron utilizados para tipificar treinta individuos de Piaractus brachypomus, provenientes del río Meta, tributario de la cuenca del río Orinoco.
Hermes Pineda S   +4 more
doaj  

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