Results 51 to 60 of about 5,672 (255)

Supplementary taxonomic description of Demidospermus pinirampi (Monogenoidea, Dactylogyridae), with a new host record and an expansion of its distribution range [PDF]

open access: yesActa Amazonica, 2017
During a survey conducted in the Lajeado Reservoir of the Tocantins River, in the state of Tocantins, Brazil, dactylogyrids were recovered from the gills of Pimelodina flavipinnis.
Julio Cesar Cenci de AGUIAR   +3 more
doaj   +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

open access: yesJournal of Fish Biology, Volume 108, Issue 2, Page 648-668, February 2026.
Abstract 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
Lucas E. P. Kampfert   +5 more
wiley   +1 more source

New records of crustaceans infesting Phractocephalus hemioliopterus (Siluriformes: Pimelodidae), the large catfish from the Amazon

open access: yesRevista Mexicana de Biodiversidad, 2019
The aim of the present study was to investigate the infracommunities of ectoparasitic crustaceans in Phractocephalus hemioliopterus Bloch and Schneider, 1801, a catfish from the lower Amazon River, in the state of Pará, eastern Amazon region, Brazil ...
Marcos Sidney B. Oliveira   +6 more
doaj   +1 more source

First Records of Length–Weight Relationships for Ten Fish Species From the Middle Stretch of the Uruguay River, Southern Brazil

open access: yesJournal of Applied Ichthyology, Volume 2026, Issue 1, 2026.
This study estimated the length–weight relationships (LWRs) of 10 fish species from the middle stretch of the Middle Uruguay River basin, aiming to provide new morphometric data and contribute to the knowledge of Neotropical ichthyofauna. Fish were collected at seven sites with sampling conducted at each site during every season, totaling 84 sampling ...
Lucas Adriano Pachla   +4 more
wiley   +1 more source

Amazonian fish migration as a social–cultural–ecological process

open access: yesPeople and Nature, Volume 7, Issue 12, Page 3297-3312, December 2025.
Abstract In this study, we highlight the rich perspectives and explanations of fish migration held by Indigenous groups across the Amazon. We present the aspects of Indigenous cosmological stories, drawing from our exploratory review of cultural ethnographies and grey literature, as well as the authors' own experiences. We ask, how do Amazonian peoples
LuLu Victoria‐Lacy   +6 more
wiley   +1 more source

Food Characterization of the Spotted Pimelodid Fish Pimelodus Maculatus From a Polluted Urban River in Argentina [PDF]

open access: yes, 2015
On the present study, the nourishment and the digestive system of a population of the spotted pimelodid Pimelodus maculatus Lacepède 1803 from a polluted urban river in Argentina were analyzed (Reconquista River, Buenos Aires province). The specimens are
D'Alessandro, M. F. (Maria)   +3 more
core   +1 more source

The Ecological Memory of Fish Assemblages in Tropical Agroecosystems With Different History of Landscape Changes

open access: yesFreshwater Biology, Volume 70, Issue 12, December 2025.
ABSTRACT Environmental changes can have persistent effects on the local and regional dynamics of multispecies assemblages. However, the extent of historical legacies on current diversity patterns may depend on the trajectory and intensity of the environmental change. Here, we investigate how persistent decadal land use and land cover (LULC) changes are
Jaquelini O. Zeni   +3 more
wiley   +1 more source

Evaluación de algunos marcadores de exposición a contaminantes en tres especies de bagres colombianos (Pisces: Siluriformes)

open access: yesBiota Colombiana, 2014
Se evaluaron ejemplares adultos de las especies capitán de la Sabana (Eremophilus mutisii), bagre rayado (Pseudoplatystoma orinocoense y P. metaense) y capaz (Pimelodus grosskopfii) (n=9-27/especie), provenientes del río Bogotá (Cundinamarca), Puerto ...
Jaime González M.   +5 more
doaj   +6 more sources

Aspectos taxonómicos de Cetopsorhamdia boquillae y C. nasus (Pisces, Heptapteridae), con anotaciones sobre su ecología en la cuenca alta de los ríos Magdalena y Cauca, Colombia [PDF]

open access: yes, 2006
A taxonomic analysis of Cetopsorhamdia boquillae and Cetopsorhamdia nasus from the Magdalena and Cauca river basin in Colombia is reported here based on fresh topotypical materials.
Román-Valencia, C., Ruiz-C., R. I.
core  

Histamine in Brazilian Foods: A Comprehensive Review of Occurrence and Risk Assessment for Intoxication and Intolerance

open access: yesFood Science &Nutrition, Volume 13, Issue 11, November 2025.
Even though histamine plays an important role in human health, it has been associated with food intoxication and intolerance episodes. The most relevant, current state of knowledge regarding histamine's biochemical and health aspects is provided. Histamine levels are provided for 17 food groups, including 335 food types and 11,437 samples, allowing ...
Maria Beatriz A. Gloria   +6 more
wiley   +1 more source

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