Results 101 to 110 of about 19,313 (296)

Requerimiento proteico del pez juvenil Metinnys orinocencis (Characiformes: Characidae)

open access: yesRevista de Biología Tropical, 2019
Introducción: La moneda o pez dólar, Metynnis orinocensis, es una de las especies ornamentales nativas de Colombia, con gran participación en el mercado internacional. Habitan principalmente en lagunas permanentes y áreas de inundación de las cuencas de los ríos Amazonas y Orinoco. Es una especie que ha sido reproducida en cautiverio.
Mariana Catalina Gutiérrez-Espinosa   +1 more
openaire   +3 more sources

Rythmes saisonniers de la croissance chez quelques Téléostéens de Guyane française [PDF]

open access: yes, 1994
Des études squeletto-chronologiques de diverses espèces de Guyane française, #Arius couma$, #A. proops$, et #A. parkeri$ (#Siluriformes$, #Arridae$), #Leporinus friderici$ (#Characiformes$, #Anostomidae$) et #Myleus rhomboidalis (#Characiformes ...
Boujard, T.   +3 more
core  

Invasive giant river prawns as opportunistic, generalist predators in the Amazon Delta: Insights from metabarcoding

open access: yesEcosphere, Volume 16, Issue 11, November 2025.
Abstract Invasive species alter habitats and biological communities. The giant river prawn Macrobrachium rosenbergii (de Man 1879) was introduced to Brazil for aquaculture, and invasive populations have established in the Amazon Delta region where they are believed to pose a risk to the native aquatic fauna.
Aisha Carolina Cei   +12 more
wiley   +1 more source

Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? [PDF]

open access: yesGenome, 2016
The combination of DNA barcodes and geometric morphometrics is useful to discriminate taxonomically controversial species, providing more precise estimates of biodiversity. Therefore, our goal was to assess the genetic and morphometric diversity in Nematocharax, a controversial monotypic and sexually dimorphic genus of Neotropical fish, based on ...
Barreto, Silvia Britto   +7 more
openaire   +4 more sources

Population genetics of the freshwater fish Prochilodus magdalenae (Characiformes: Prochilodontidae), using species-specific microsatellite loci

open access: yesPeerJ, 2020
Prochilodus magdalenae is a freshwater fish endemic to the Colombian Magdalena-Cauca and Caribbean hydrographic basins. The genetic structure patterns of populations of different members of Prochilodus and the historic restocking of its depleted natural ...
R. M. Landínez-García   +2 more
semanticscholar   +1 more source

Local Environmental Variables Predict Fish Species Richness and Composition in Sand Beaches of a Neotropical River

open access: yesRiver Research and Applications, Volume 41, Issue 9, Page 1949-1958, November 2025.
ABSTRACT Local and regional species diversity is influenced by historical factors, resource availability, biotic interactions, the presence of resources, and adequate environmental conditions. We evaluated the effects of local environmental variables and spatial structure on fish species richness and composition along sandy beaches of a Neotropical ...
Ronaldo Souza da Silva   +8 more
wiley   +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  

Applications of next-generation sequencing technologies and computational tools in molecular evolution and aquatic animals conservation studies : a short review [PDF]

open access: yes, 2019
Aquatic ecosystems that form major biodiversity hotspots are critically threatened due to environmental and anthropogenic stressors. We believe that, in this genomic era, computational methods can be applied to promote aquatic biodiversity conservation ...
Afiqah-Aleng, Nor   +8 more
core   +1 more source

Parasites Are Paramount: Vertical Trophic Positions of Parasitic Catfishes in a Tropical River Food Web

open access: yesEcology of Freshwater Fish, Volume 34, Issue 4, October 2025.
ABSTRACT The Neotropical catfish family Trichomycteridae contains parasitic fishes that include scale and mucus feeders (subfamily Stegophilinae) and blood feeders (i.e., ‘candirus’, subfamily Vandelliinae). The influence of parasitic catfishes on food web dynamics is unknown.
Carmen G. Montaña   +7 more
wiley   +1 more source

Taxonomie numérique des Citharininae (Poissons, Characiformes)

open access: yes, 1966
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

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