Results 31 to 40 of about 593 (127)

Avaliação das pescarias de bagre-branco (Genidens barbus) nos estados de São Paulo e Paraná, Brasil

open access: yesRevista Ibero-Americana de Ciências Ambientais, 2023
A pesca de G. barbus é considerada uma das pescarias mais importantes do setor artesanal do sudeste e sul do Brasil. No entanto, os indivíduos desta espécie são considerados vulneráveis à extinção, devido à baixa fecundidade, a incubação do tipo oral realizada pelos machos, distribuição restrita em águas de rios ou estuários durante o período ...
Maria Carolina Las Casas e Novaes   +2 more
openaire   +1 more source

Biologia reprodutiva do bagre ameaçado de extinção Genidens barbus (Lacépède, 1803) (Ariidae, Siluriformes), em ambiente estuarino no Sul do Brasil [PDF]

open access: yes, 2022
A presente pesquisa descreve aspectos de biologia reprodutiva do bagre marinho ameaçado de extinção Genidens barbus (Lacépède, 1803), na região do estuário do rio Tramandaí, sul do Brasil, objetivando a compreensão acerca da biologia populacional da ...
Vontobel, Eduardo Dobber
core  

Isotopic niche of the catfishes Bagre bagre and Genidens barbus in a coastal area of south-eastern Brazil [PDF]

open access: yesBiota Neotropica, 2018
Abstract: The isotopic niche of Bagre bagre and Genidens barbus target of commercial fisheries in a marine coastal area from northern Rio de Janeiro State (~21ºS), south-eastern Brazil was compared to evaluate the feeding assimilation and the trophic relationship.
Ana Paula Madeira Di Beneditto   +2 more
openaire   +3 more sources

Arsenic, selenium, and metals in a commercial and vulnerable fish from southwestern Atlantic estuaries: distribution in water and tissues and public health risk assessment [PDF]

open access: yes, 2019
The anadromous catfish Genidens barbus is a vulnerable and economically important species from the Southwestern Atlantic Ocean. Concentrations of As, Co, Fe, Se, and Zn were determined in water and muscle, gill, and liver of catfish from two southwestern
Avigliano, Esteban   +5 more
core   +1 more source

São Gonçalo Channel as an Ecological Corridor for the Movement of Migratory Fishes: Environmental History and Perspectives for Fishery Management in the Mirim Lagoon, South Brazil [PDF]

open access: yes, 2019
Ecological corridors are important for maintaining the flow of species between habitat patches. The analysis of historical records of the dam-sluice gate construction process and the ecology of known migratory fishes in the Patos-Mirim hydrographic ...
Burns, Marcelo Dias de Mattos   +2 more
core   +1 more source

Estudo de espécies de pescado potencialmente aproveitáveis na cadeia produtiva do litoral sul do Estado do Rio de Janeiro

open access: yesRevista Verde de Agroecologia e Desenvolvimento Sustentável, 2015
No Rio de Janeiro, a produção de pescado ocorre de maneira ampla em contingente de espécies, porém, algumas se encontram em situação de sobrepesca, tornando-se importante o estudo de espécies potencialmente aproveitáveis do ponto de vista nutricional ...
A. L. A. Jamas   +4 more
doaj   +1 more source

Comparando os métodos de amostragem de rede de arrasto de praia e rede de emalhe em assembleias de peixes de lagos costeiros rasos do sul do Brasil [PDF]

open access: yes, 2022
The aim of this study was to compare littoral zone fish assemblage richness, composition, dominance and size patterns between beach seine and gillnets sampling methods in coastal lakes at Tramandaí river, Southern Brazil.
Fialho , Clarice Bernhardt   +2 more
core   +2 more sources

Inter-annual variability in otolith chemistry of catfish Genidens barbus from South-western Atlantic estuaries

open access: yesJournal of the Marine Biological Association of the United Kingdom, 2017
The catfish Genidens barbus is a commercial species from South America. The aim of the present study was to examine the inter-annual variability in estuary-specific chemical signatures of otolith cores (Ba:Ca, Mg:Ca, Mn:Ca, Sr:Ca and Zn:Ca ratios) for three estuaries from Argentina and Brazil where adults were collected over multiple years. Secondarily,
Avigliano, Esteban   +4 more
openaire   +2 more sources

Effects of freezing on the carbon and nitrogen stable isotopic compositions of fish tissues [PDF]

open access: yesActa Limnologica Brasiliensia
Stable isotope analysis is a vital tool for elucidating nutrient flow within food chains. Studies utilizing this methodology must consider potential variables that could influence the δ13C and δ15N values of the species being examined.
Luciana Mulero Beloto   +4 more
doaj   +1 more source

Desembarque de peixes da pesca artesanal na Barra do Rio, Tijucas – SC, Brasil

open access: yesBiotemas, 2013
Com o objetivo de caracterizar e comparar os diferentes aspectos quantitativos e qualitativos da pesca artesanal, foram analisados os desembarques pesqueiros da comunidade de pescadores artesanais da Barra do Rio, em Tijucas-SC, de setembro de 2010 a ...
Daniel Ganzarolli Martins   +2 more
doaj   +1 more source

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