Results 1 to 10 of about 642 (91)

THE FIRST REPORT OF ABNORMAL AGE RINGS IN OTOLITHS LAPILLUS OF ARIIDS CATFISH [PDF]

open access: yesBoletim do Instituto de Pesca, 2021
The present work aimed to record the first presence of abnormal age rings in Cathorops spixii lapillus otoliths from Cananeia-Iguape Estuarine-Lagoon Complex (CIELC), Southern region of Brazilian coast. In August 2018, 59 specimens of C.
Igor Souza de MORAIS   +1 more
doaj   +5 more sources

Population dynamics and diet of the madamango Sea catfish Cathorops spixii (Agassiz, 1829) (Siluriformes: Ariidae) in a tropical bight in Southeastern Brazil. [PDF]

open access: yesPLoS ONE, 2013
The madamango sea catfish, Cathorops spixii (Siluriformes: Ariidae), is often among the most abundant fishes on the South American Atlantic coast.
Márcia Denadai   +5 more
doaj   +2 more sources

Electrophoretic study on intraspecific variations and interspecific relationships of marine catfishes (Siluriformes, Ariidae) of Cananéia (São Paulo, Brazil): 1. General proteins of eye-lens and skeletic muscle [PDF]

open access: yesBrazilian Journal of Oceanography, 1990
Cellulose acetate electrophoresis of eye-lens proteins and Polyacrylamide flat gel electrophoresis of skeletic muscle proteins of six species of marine catfishes were carried out. Genetic polymorphism only occured at one locus of the electropherograms of
Hana Suzuki, Van Ngan Phan
doaj   +5 more sources

Nuclear abnormalities in erythrocytes and morphometric indexes in the catfish Cathorops spixii (Ariidae) from different sites on the southeastern Brazilian coast [PDF]

open access: yesBrazilian Journal of Oceanography, 2012
Nuclear abnormalities in erythrocytes (NAE) were taken as biomarkers in the catfish Cathorops spixii (Ariidae) sampled in an estuary little affected by human activity (Cananéia) and in three regions (Santos Channel: SC, Santos Bay: SB and São Vicente ...
Juliana de Souza Azevedo   +2 more
doaj   +4 more sources

Revalidação de Cathorops arenatus e Cathorops agassizii (Siluriformes, Ariidae), bagres marinhos das regiões norte e nordeste da América do Sul [PDF]

open access: yesIheringia: Série Zoologia, 2007
As espécies nominais das regiões norte e nordeste da América do Sul, reconhecidas na literatura como sinônimos júnior de Cathorops spixii (Agassiz, 1829) têm seu status específico revisto.
Alexandre P. Marceniuk
doaj   +2 more sources

Evidence of contamination by oil and oil products in the Santos-São Vicente estuary, São Paulo, Brazil [PDF]

open access: yesBrazilian Journal of Oceanography, 2012
Different components of the mixed function oxidase (MFO) system and the levels of fluorescent aromatic compounds in bile (FACs) were measured in Cathorops spixii in order to assess the impact of polycyclic aromatic hydrocarbons (PAHs).
Juliana Souza Azevedo   +6 more
doaj   +6 more sources

Marine catfishes (Ariidae—Siluriformes) from the Coastal Amazon: mitochondrial DNA barcode for a recent diversification group? [PDF]

open access: yesPeerJ
Background Ariidae species play a significant role as fishing resources in the Amazon region. However, the family’s systematic classification is notably challenging, particularly regarding species delimitation within certain genera.
Ítalo Lutz   +9 more
doaj   +3 more sources

Contamination and oxidative stress biomarkers in estuarine fish following a mine tailing disaster [PDF]

open access: yesPeerJ, 2020
Background The Rio Doce estuary, in Brazil, was impacted by the deposition of iron mine tailings, caused by the collapse of a dam in 2015. Based on published baseline datasets, the estuary has been experiencing chronic trace metal contamination effects ...
Fabrício Â. Gabriel   +9 more
doaj   +3 more sources

Ichthyofauna as an environmental quality indicator of the Bertioga Channel, São Paulo (Brazil) [PDF]

open access: yesBrazilian Journal of Oceanography, 2017
The aim of this study was to investigate the ichthyofauna structure in the region of the north outfall of the Bertioga Channel (São Paulo, Brazil) and the possible effects of the environmental quality loss.
June Ferraz Dias   +4 more
doaj   +5 more sources

A comprehensive overview of fish envenomation and venom toxicity in Brazil [PDF]

open access: yesJournal of Venomous Animals and Toxins including Tropical Diseases
Background: Brazilian waters are home to various venomous fish species, each with its unique venom composition. Although common, envenomation cases are largely underreported, leading to a lack of public health policies for prevention and treatment. Some
Mônica Lopes-Ferreira   +12 more
doaj   +2 more sources

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