Results 11 to 20 of about 507 (138)

Assessment of sábalo (Prochilodus lineatus) fisheries in the lower Paraná River basin (Argentina) based on hydrological, biological, and fishery indicators [PDF]

open access: yesNeotropical Ichthyology, 2013
This study assesses the change in fish exploitation patterns of the sábalo fisheries of the lower Paraná River basin based on hydrological, biological, and fishery indicators. From historical catch records, we recorded a shift from a lightly and moderate
Claudio Baigún   +2 more
doaj   +5 more sources

Abandono y permanencia escolar de las infancias Awá del resguardo el Gran Sábalo en tiempos de pandemia [PDF]

open access: yesRevista Politécnica, 2023
La pandemia por el coronavirus genero efectos globalizados en sectores como el educativo, que llevaron a la elección de caminos decisivos en la vida académica, social y emocional de la infancia; como fueron la permanencia y el abandono educativo. Este
Viviana Marcela Rodriguez-Caicedo   +2 more
doaj   +5 more sources

Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity. [PDF]

open access: yesJ Fish Biol, 2021
ABSTRACT Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018–19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's ...
Aguirre WE   +15 more
europepmc   +2 more sources

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

open access: yesJ Fish Biol
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 ...
Yazbeck GM   +5 more
europepmc   +2 more sources

Feeding habits and trophic level of the Panama grunt Pomadasys panamensis, an important bycatch species from the shrimp trawl fishery in the Gulf of California. [PDF]

open access: yesScientificWorldJournal, 2014
The Panama grunt is an abundant and commercially important species in the southeastern Gulf of California, but the research undertaken on this species is scarce despite its ecological and economic importance. We studied the feeding habits of Panama grunt through stomach content analyses as a first step towards understanding the biology of this species ...
Rodríguez-Preciado JA   +3 more
europepmc   +2 more sources

Humoral and haemocytic responses of Litopenaeus vannamei to Cd exposure. [PDF]

open access: yesScientificWorldJournal, 2014
White shrimp, Litopenaeus vannamei, subadults were exposed to four dilutions of the 96 h cadmium LC50 reported for postlarvae (PL12) of this species, and the effects were evaluated after 5, 48, and 96 h of exposure. While treatments did not affect survival and hemolymph clotting time increased with time, but not as a response to Cd exposure, the ...
Bautista-Covarrubias JC   +5 more
europepmc   +2 more sources

Estudio y conservación del sábalo (Megalops atlanticus) en el Parque Nacional Caguanes, Cuba: usos potenciales y perspectivas [PDF]

open access: yes, 2021
El sábalo Megalops atlanticus es una especie importante en la pesca recreativa y está evaluada como Vulnerable por la Unión Internacional para la Conservación de la Naturaleza, debido a la sobrepesca y pérdida de sus hábitats.
Armando Falcón-Méndez   +6 more
core   +1 more source

Fisheries in a border area of the Moxos Lowlands (Bolivia) after invasion of Arapaima gigas

open access: yesAquaculture, Fish and Fisheries, Volume 3, Issue 2, Page 196-210, April 2023., 2023
We characterized fisheries in the area of the port city of Riberalta (upper Madeira River basin) and evaluated the contribution of an invasive species (Arapaima gigas) to the landings. A. gigas represented 57.6% of the overall economic value of fish in the region.
Gabriela Rico Lopez   +4 more
wiley   +1 more source

Study of the Effect of Dietary Agavin Supplementation in Blood Parameters and Antioxidant Enzymes of Juvenile Nile Tilapia (Oreochromis niloticus) under Stress Conditions

open access: yesFishes, 2022
High-density aquaculture produces oxidative stress that affects fish welfare and leads to poor growth. Agavin is a fructan that regulates the antioxidant response and inhibits stress-related alterations in blood metabolites (cortisol and blood lipids ...
Lizeth Carolina Flores-Méndez   +5 more
doaj   +1 more source

Predicted Secretome of the Monogenean Parasite Rhabdosynochus viridisi: Hypothetical Molecular Mechanisms for Host-Parasite Interactions

open access: yesParasitologia, 2023
Helminth parasites secrete several types of biomolecules to ensure their entry and survival in their hosts. The proteins secreted to the extracellular environment participate in the pathogenesis and anthelmintic immune responses. The aim of this work was
Marian Mirabent-Casals   +3 more
doaj   +1 more source

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