Results 71 to 80 of about 12,674 (172)

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   +1 more source

Alimentação de duas espécies do gênero Pseudoplatystoma do Rio Negro, Pantanal da Nhecolândia, MS, Brasil. [PDF]

open access: yes, 2011
Este trabalho investigou a dieta e reprodução de duas espécies de peixes Siluriformes migradores do rio Negro, Pantanal da Nhecolândia, sob a influência do pulso de inundação.
COSTA, F. E. dos S.   +2 more
core  

Occurrence of Astyanax dissensus Lucena & Thofehrn, 2013 (Teleostei: Characidae) in Argentina [PDF]

open access: yes, 2016
The occurrence of Astyanax dissensus in the Uruguay River, at Yapeyú, Corrientes, Argentina is reported for the first time in the country.Fil: Teran, Guillermo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas.
Alonso, Felipe   +4 more
core   +2 more sources

Small fish, large variation: Morphological diversity of Weberian apparatus in Noturus catfishes and ecological implications

open access: yesThe Anatomical Record, Volume 308, Issue 12, Page 3069-3081, December 2025.
Abstract The Weberian apparatus is a hearing specialization unique to the otophysan fishes, and an unexpected degree of morphological variation exists in species of the Noturus catfishes. Our aim in this study is to investigate relationships between morphological variations and ecology that may drive this variation.
J. C. Hoeflich, Juan Liu
wiley   +1 more source

Ictiólogos de la Argentina: Amalia María Miquelarena [PDF]

open access: yes, 2013
This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina.
López, Hugo Luis, Ponte Gómez, Justina
core   +1 more source

The Ecological Memory of Fish Assemblages in Tropical Agroecosystems With Different History of Landscape Changes

open access: yesFreshwater Biology, Volume 70, Issue 12, December 2025.
ABSTRACT Environmental changes can have persistent effects on the local and regional dynamics of multispecies assemblages. However, the extent of historical legacies on current diversity patterns may depend on the trajectory and intensity of the environmental change. Here, we investigate how persistent decadal land use and land cover (LULC) changes are
Jaquelini O. Zeni   +3 more
wiley   +1 more source

Chromosomal painting and ZW sex chromosomes differentiation in Characidium (Characiformes, Crenuchidae) [PDF]

open access: yes, 2011
Background: The Characidium (a Neotropical fish group) have a conserved diploid number (2n = 50), but show remarkable differences among species and populations in relation to sex chromosome systems and location of nucleolus organizer regions (NOR).
Tatiana C Machado   +10 more
core   +3 more sources

Effect of photoperiod on ovarian maturation in Cheirodon interruptus (Teleostei: Characidae)

open access: yesBrazilian Journal of Biology, 2018
Cheirodon interruptus is a ubiquitous small characid that inhabits the Pampean region and commonly used as bait. Its vast market is supplied from the wild population causing a significant environmental impact.
I. D. García   +5 more
doaj   +1 more source

On a remarkable sexual dimorphic trait in the Characiformes related to the olfactory organ and description of a new miniature species of Tyttobrycon Géry (Characiformes: Characidae).

open access: yesPLoS ONE, 2019
Among the order Characiformes, secondary sexual dimorphism is commonly associated to the occurrence of bony hooks on fins, shape and length of the dorsal and anal fins, and sexual dichromatism.
Vitor Pimenta Abrahão   +2 more
doaj   +1 more source

Conteúdo Calórico de Músculos de Prochilodus Lineatus (Characiformes, Prochilodontidae) no Reservatório de Manso, Brasil [PDF]

open access: yes, 2010
Com o objetivo de conhecer as variações intraespecíficas no conteúdo calórico, presentes em músculos de Prochilodus lineatus, foram analisados 118 espécimes durante o período de outubro 2002 a setembro 2003 no reservatório de Manso, Mato Grosso, Brasil ...
Benedito, Evanilde   +3 more
core  

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