Indução de tripoidia em Rhamdia quelen (Pisces, Pimelodidae) [PDF]
Boletim do Instituto de Pesca, 2018 A técnica de indução de triploidia em Rhamdia quelen foi padronizada mediante aplicação de choques térmicos quentes de diferentes durações e em diferentes momentos pós-fecundação.
Pedro Vozzi +2 more
doaj +1 more source
Morphological and Histometric Alterations in Gonadal and Neural Tissues of Native and Non-Native Fishes From the Lower Doce River Basin in Southeastern Brazil. [PDF]
Anat Histol EmbryolABSTRACT The ichthyofauna of the lower Doce River basin has been exposed to multiple anthropogenic stressors. Among these, the collapse of the Fundão mining tailings dam in Mariana, Minas Gerais, Brazil, in 2015 resulted in massive fish mortality and widespread contamination of aquatic environments.
Marcon L +8 more
europepmc +2 more sources
Insights Into Spatial Orientation and Cognition in Tarantulas (Araneae: Theraphosidae) Under Natural Conditions, With Notes on Possible Ontogenetic Niche Shifts. [PDF]
Ecol EvolCognitive studies on spiders have largely ignored mygalomorphs, such as tarantulas, and almost completely lack field‐based observations. We present nine observations of arboreal and fossorial New World tarantulas, including a blind cave‐dwelling species, providing evidence for possible experience‐based navigation and spatial learning during foraging ...
Zamani A, West RC.
europepmc +2 more sources
Hybridization, Maternal Inheritance, and Evolutionary Time of Divergence of Endangered Species of <i>Hypancistrus</i> (Siluriformes: Loricariidae) in the Xingu River. [PDF]
Ecol EvolWe uncover recent hybridization dynamics among three endemic Hypancistrus species from the Xingu River, including the critically endangered H. zebra. Mitogenomic analyses reveal unidirectional maternal inheritance and recent evolutionary radiation (< 0.5 Ma), explaining their retained reproductive compatibility.
Kerniske FF +4 more
europepmc +2 more sources
Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil. [PDF]
J Fish BiolAbstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Kampfert LEP +5 more
europepmc +2 more sources
A Maximum 34% Substitution of Fish Meal by Soybean Meal Is Recommended for <i>Rhynchocypris lagowskii</i> Dybowski Cultured in Biofloc Systems: Evidence From Growth and Intestinal Barrier Function. [PDF]
Aquac NutrIn this study, glucose was used as the carbon source for the bioflocs in each group, with a carbon‐to‐nitrogen ratio (C/N) of 20 : 1. Juvenile Rhynchocypris lagowskii Dybowski (6.89 ± 0.02 g) were used as the experimental animals. Soybean meal (SBM) protein replaced 0.0% (CK), 17.0% (B17), 34.0% (B34), 51.0% (B51), and 68.0% (B68) of fish meal protein ...
Yang ZY +5 more
europepmc +2 more sources
, 2021 Rhamdia guatemalensis (Günther, 1864). Pale Catfish, Guatemalan Catfish; Barbudo, Pinga de Padre, Chuchín, Chulín, Bagre, Filín, Julín, Barbudo de Guatemala o Guatemalteco.
Angulo, Arturo
core +1 more source
Morphological and molecular evidence reveals a new species of Characidium from the Ucayali-Urubamba Piedmont, Peru, and novel molecular clades are proposed within the genus. [PDF]
J Fish BiolAbstract A new species of Characidium is described from the Urubamba River basin, within the Ucayali‐Urubamba Piedmont ecoregion, Peru. The new species can be readily distinguished from all congeners, except Characidium cacah, Characidium chicoi, Characidium helmeri, Characidium mirim, Characidium nana, Characidium nupelia, Characidium sterbai ...
Oliveira-Silva L +6 more
europepmc +2 more sources
Digestion dynamics of protein sources for silver catfish (Rhamdia quelen)
, 2020 Digestion dynamics of protein sources for silver catfish (Rhamdia ...
Adorian, T (via Mendeley Data)
core +2 more sources
Ecología trófica del Liso (Rhamdia quelen Quoy & Gaimard, 1824) en el río Sinú, Colombia [PDF]
Revista Mvz Cordoba, 2012 RESUMEN Objetivo. Estudiar la ecología trófica del Liso en el río Sinú como contribución al conocimiento de su biología y ecología, a su preservación en el medio natural y al ordenamiento de su pesquería en la cuenca. Materiales y métodos.
Charles W. Olaya-Nieto +2 more
doaj +2 more sources