Results 51 to 60 of about 1,055 (159)

The fish community of the Paredes floodplain lake, Magdalena medio (Santander) and its association with spacio-temporal and environmental variables

open access: yesBiota Colombiana, 2016
Between february and december of 2011 the fish communities of the ciénaga de Paredes, were studied by four samples in periods contrasting climates, station 1, corresponding to the inlet of the pipe Peruétano (BCP), station 2, Swamp Center (CC) and ...
Beatriz H. Mojica-Figueroa   +1 more
doaj   +1 more source

Áreas de reproducción de peces migratorios en la cuenca alta del río Magdalena, Colombia

open access: yesBiota Colombiana, 2014
During the 2011-2012 hydrological cycle, weekly samples were taken to evaluate the reproduction of migratory fishes in the area of influence of the El Quimbo hydroelectric project. This analysis considered the abundance and density of individuals in each
María Isabel Pareja-Carmona   +5 more
doaj   +1 more source

A fractal pattern of hierarchical genetic population structure in mixed stocks across fish segregated by dams revealed by genomic resources for curimba Prochilodus lineatus

open access: yesJournal of Fish Biology, EarlyView.
Abstract Genomic resources, new microsatellite markers and a novel observation of a fractal pattern in the genetic population structure are presented for curimba, Prochilodus lineatus, a freshwater migratory model species of South America. Our main goals were to investigate the presence of mixed fish stocks and the effects of damming‐induced ...
Gabriel M. Yazbeck   +5 more
wiley   +1 more source

Content of mercury in muscle of some commercial fish species present in eight sampling sites from the Magdalena river basin (low, medium and high) [PDF]

open access: yes, 2014
Las diversas actividades antrópicas realizadas en las riberas de los sistemas acuáticos han ocasionados graves impactos sobre los organismos que allí habitan, uno de los principales contaminantes que afectan las pesquerías es el mercurio, el cual tiene ...
Lancheros Ascencio, Leidy Johanna
core  

Optimizing Total Suspended Solids Mitigation in a Data‐Limited Watershed: A Network‐Based Advection–Reaction Model Applied to the Canal del Dique, Colombia

open access: yesWater Resources Research, Volume 62, Issue 2, February 2026.
Abstract Total Suspended Solids (TSS) significantly degrade water quality by reducing light penetration and oxygen availability, while facilitating the transport of toxic contaminants. Managing TSS in watersheds requires an understanding of both hydrological connectivity and pollutant dynamics; however, these efforts are significantly constrained by ...
Jesus Guzmán Pérez   +2 more
wiley   +1 more source

Selectividad de red de enmalle para captura de bocachico (Prochilodus magdalenae, Prochilodontidae) en la ciénaga de Zárate

open access: yesActa Biológica Colombiana, 2021
La estimación precisa de curvas de selectividad de redes de enmalle en una población de peces es un requisito importante para la sostenibilidad de los stocks explotados.
Jesús David Arrieta Atencio   +2 more
doaj   +1 more source

Sperm Quality, Milt Biochemistry, and Cellular Ultrastructure in Fresh and Cryopreserved Sperm of Brycon amazonicus

open access: yesAquaculture Research, Volume 2025, Issue 1, 2025.
Milt cryopreservation facilitates native fish’s constant production of commercial interest. However, it can damage spermatozoa (sptz) due to the osmotic stress of diluents and low temperatures. This study compares spermatic quality in fresh (SF) and cryopreserved (CS) milt in B. amazonicus for 24 h, 1 month, and 3 months.
Owens José Barros-Barrios   +4 more
wiley   +1 more source

Concentraciones de metilmercurio en Prochilodus magdalenae (Teleostei: Curimatidae) y Hoplias malabaricus (Teleostei: Erythrinidae) en la cuenca baja del río Cauca-Magdalena, norte de Colombia

open access: yesActa Biológica Colombiana, 2021
Las emisiones de mercurio (Hg) a partir de actividades de minería afectan los recursos pesqueros, los cuales son importantes en la alimentación proteínica de las poblaciones humanas.
Ángel De Jesús Cruz Esquivel   +1 more
doaj   +1 more source

The problems with pin bones: Intermuscular bone development and function in salmonids and their implications for aquaculture

open access: yesReviews in Aquaculture, Volume 16, Issue 4, Page 1981-1995, September 2024.
Abstract A healthy skeletal system is fundamental to fish welfare and performance and a key physiological feature of a robust fish. The presence of skeletal deformities in farmed salmonids is a persistent welfare problem in aquaculture, and one which threatens to impede industry growth.
Brianne A. Lyall   +7 more
wiley   +1 more source

Análisis y evaluación financiera del sistema policultivo de bocachico y tilapia roja en los departamentos del Atlántico y Magdalena [PDF]

open access: yes, 2015
En este texto investigativo se realiza una avaluación financiera del proyecto Sistema Policultivo Bocachico – Tilapia Roja. Para llevar a cabo la investigación radica que en el momento en que se realizó el primer prototipo del Policultivo, no se tuvieron
Carreño Cueto, Edelsy Luz   +1 more
core  

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