Results 51 to 60 of about 3,703 (198)

Fish Assemblages in an Urbanized Neotropical Basin: Influence of Environmental Factors Across Dry and Rainy Periods

open access: yesInternational Review of Hydrobiology, Volume 111, Issue 2, December 2026.
ABSTRACT This study investigated the effects of season and environmental disturbances on fish communities in neotropical rivers of the Sorocaba basin, a Sub‐Basin of the Paraná River in Southeast Brazil, based on sampling 1196 individuals from 49 species, including two non‐native and one threatened with extinction.
Natalia S. Alves   +2 more
wiley   +1 more source

BIOLOGÍA REPRODUCTIVA DE «BOQUICHICO», Prochilodus nigricans, EN LA AMAZONÍA PERUANA [PDF]

open access: yes, 2001
La época de reproducción de «boquichico», Prochilodus nigricans, está comprendida entre los meses de diciembre y marzo. Este periodo coincide con el inicio del aumento de aguas del río Amazonas y no guarda mayor relación con el incremento de las ...
MONTREUIL-FRIAS, Víctor Hugo   +5 more
core   +2 more sources

GENETIC IMPLICATIONS OF RESTOCKING PROGRAMS ON WILD POPULATIONS OF STREAKED PROCHILOD Prochilodus lineatus

open access: yesBoletim do Instituto de Pesca, 2019
Genetic diversity of wild and farmed populations is crucial, both for conservation of fish resources and fish culture development. To infer the genetic diversity and population structure of Streaked prochilod Prochilodus lineatus, individuals were ...
Lin Hua Liu IWERSEN   +4 more
doaj   +1 more source

Two new Haploporidae (Trematoda) of Fishes from the Brazilian state of Rondônia [PDF]

open access: yesActa Amazonica, 1999
Two new Haploporidae (Trematoda) are described from fishes of the State of Rondônia, Brazil. Rondotrema microvitellarum gen. et sp. n., an intestinal parasite of Hemiodus microlepis, is characterized as having intercecal vitellaria limited to one small ...
Vernon E. THATCHER
doaj   +1 more source

Integrated Biomarker Assessment of Bifenthrin, Chlorpyrifos and Endosulfan Toxicity in Indigenous Carps (Catla catla and Labeo rohita): Oxidative Stress, Genotoxicity and Nuclear Alterations

open access: yesVeterinary Medicine and Science, Volume 12, Issue 6, November 2026.
Combined exposure to bifenthrin–chlorpyrifos and bifenthrin–endosulfan mixtures induced oxidative stress, genotoxicity and nuclear abnormalities in Catla catla and Labeo rohita. Antioxidant and DNA damage biomarkers provide sensitive tools for assessing pesticide‐related ecological risks in aquatic environments. ABSTRACT Background The extensive use of
Huma Naz   +10 more
wiley   +1 more source

Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent

open access: yesNeotropical Ichthyology
This paper presents results of a fishway evaluation performed at the Engenheiro Sérgio Motta Hydroelectric Power Plant (known as Porto Primavera) - CESP, Paraná River, Brazil.
Ricardo Luiz Wagner   +5 more
doaj   +1 more source

Fish commercialization in the main market places in Monteria, Colombia

open access: yesTemas Agrarios, 2014
Fish commercialization in Colombia has increased in the last few years, due to benefits associated to its consumption. In Monteria city, most of the fish is sold in public market places, where currently the state of its commercialization is unknown.
Elvira Durán   +3 more
doaj   +1 more source

Nutritional value of fatty acids of the Neotropical freshwater fishes Prochilodus magdalenae, Pseudoplatystoma magdaleniatum and Ageneiosus pardalis

open access: yesGrasas y Aceites, 2020
This study aimed to determine the nutritional value of the fatty acids in the freshwater fish Prochilodus magdalenae, Pseudoplatystoma magdaleniatum and Ageneiosus pardalis during dry and wet Neotropical seasons with the view to generate useful ...
P. M. Márquez-Fernández   +3 more
doaj   +1 more source

Fish Sperm Subpopulations Detection, Separation, and Application: Current State and Trends

open access: yesReviews in Aquaculture, Volume 18, Issue 4, September 2026.
Modern advances in sperm biology highlight the necessity of recognising intra‐ejaculate heterogeneity as a central concept for advancing both the fundamental understanding of fertilisation processes and the development of artificial reproduction techniques in fishes. ABSTRACT Sperm subpopulations represent a fundamental manifestation of intra‐ejaculate
Viktoriya Dzyuba   +2 more
wiley   +1 more source

Efecto de dos concentraciones de nitritos sobre el crecimiento y sobrevivencia en alevinos de bocachico (prochilodus magdalenae)

open access: yes, 2001
Juveniles de bocachico (Prochilodus magdalenae) con pesos entre 0,5 y 1,8 g fueron expuestos crónicamente a dos concentraciones de nitritos [...
Ceballos, S.   +2 more
core   +2 more sources

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