Results 81 to 90 of about 1,591 (196)

Fisher Behavior While Illegally Fishing for Atlantic Goliath Grouper (Epinephelus itajara, Epinephelinae) on the Amazon Continental Shelf, Brazil

Fisheries Management and Ecology, Volume 33, Issue 1, Page 1-13, February 2026.
ABSTRACT In 2002, the Brazilian government banned fishing for Goliath grouper, Epinephelus itajara (Lichtenstein, 1822), through 2007. This grouper was the first fish species targeted by a specific law in Brazilian environmental legislation. Grouper stocks showed no signs of recovery, so the ban was renewed multiple times since 2007. Official estimates
Felipe Moreira de Souza, Voyner Ravena Cañete, Paulo Emílio Costa Santos, Bianca Bentes   +3 more
wiley   +1 more source

Predação de larvas de pirarucu Arapaima gigas por peixes invasores.

, 2022
Um dos principais gargalos na produção do pirarucu Arapaima gigas é a reprodução em cativeiro, resultando em inconstância no número de desovas por ciclo reprodutivo e instabilidade na disponibilidade de juvenis no mercado. Neste estudo, objetiva-se fazer
JESUS, F. H. R. de, AKAMA, A., LIMA, A. F., MACIEL, P. O., REIS, A. G. P. dos   +4 more
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Helmintos parasitos do pirarucu, Arapaima gigas (Schinz, 1822) (Osteoglossiformes: Arapaimidae), no rio Araguaia, estado de Mato Grosso, Brasil Helminth parasites of pirarucu, Arapaima gigas (Schinz, 1822) (Osteoglossiformes: Arapaimidae) from Araguaia River, State of Mato Grosso, Brazil

Revista Brasileira de Parasitologia Veterinária, 2008
Foram examinados 65 exemplares de pirarucu em agosto de 2004, provenientes do rio Araguaia, Estado de Mato Grosso, Brasil para o estudo dos seus helmintos parasitos. Cinco espécies foram registradas parasitando Arapaima gigas: Dawestrema cycloancistrium (
Sonia M. C. dos Santos, Paulo S. Ceccarelli, José L. Luque   +2 more
doaj   +1 more source

Local knowledge enhances the sustainability of interconnected fisheries

Journal of Applied Ecology, Volume 63, Issue 1, January 2026.
Our modelling approach allows managers to compare alternative conservation strategies under different socio‐ecological scenarios, highlighting trade‐offs and guiding investment of effort and resources. While immediately valuable for pirarucu management in the Middle Juruá, the framework scales across tiers of applicability, each requiring progressively
Carine Emer, Miguel Lurgi, Sérgio Timóteo, João Vitor Campos‐Silva, Shai Pilosof   +4 more
wiley   +1 more source

Exploratory investigation of genetic factors associated with the sex-determination system in Arapaima gigas (Pirarucu)

, 2020
The Pirarucu, (Arapaima gigas) is one of the largest freshwater bony fish in the world, with adults that can weigh 200 kilograms and measure 3 meters in length.
Cavalcante, Renata Lilian Dantas
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Spread of Amazonian Freshwater Fishes Beyond Their Native Ranges

Fish and Fisheries, Volume 27, Issue 1, Page 56-67, January 2026.
ABSTRACT The spread and establishment of Amazonian species outside their native ranges through activities such as sport fishing, aquaculture, and the ornamental fish industry may lead to ecological changes in recipient ecosystems. We investigated the global distribution of Amazonian freshwater fish (AFF) and conducted a case study in the upper Paraná ...
Aymar Orlandi Neto, Luiz Guilherme dos Santos Ribas, Lidiane Franceschini, João Henrique Pinheiro Dias, Hugo Marques, Igor Paiva Ramos, Lilian Casatti, Éder André Gubiani, Jean Ricardo Simões Vitule   +8 more
wiley   +1 more source

Tolerância de juvenis de pirarucu ao aumento da concentração de amônia em ambiente confinado Tolerance of pirarucu juveniles to increasing ammonia concentration in a closed environment

Pesquisa Agropecuária Brasileira, 2004
O objetivo deste trabalho foi avaliar a tolerância de juvenis de pirarucu, Arapaima gigas, a concentrações crescentes de amônia na água. Oito peixes (2,6±0,4 kg e 70,5±4,1 cm de comprimento) foram distribuídos aleatoriamente em quatro ...
Bruno Adan Sagratzki Cavero, Manoel Pereira-Filho, André Moreira Bordinhon, Flávio Augusto Leão da Fonseca, Daniel Rabello Ituassú, Rodrigo Roubach, Eduardo Akifumi Ono   +6 more
doaj   +1 more source

Assessing the population structure of Plagioscion squamosissimus (Teleostei, Perciformes, Sciaenidae) from the São Francisco River, Bahia, Brazil, using body morphology and otolith shape signatures

Journal of Fish Biology, Volume 108, Issue 1, Page 69-85, January 2026.
Abstract The south American silver croaker, Plagioscion squamosissimus, holds significant importance for the artisanal fisheries in the sub‐middle and lower courses of the São Francisco River, located in northeastern Brazil. To investigate the population structure of this species along its longitudinal profile, a total of 150 individuals (50 fish per ...
F. L. Freitas, N. S. Pereira, P. B. Pinheiro, R. Schroeder, A. T. Correia   +4 more
wiley   +1 more source

First record of an in vivo collection of semen from pirarucu Arapaima gigas (Schinz, 1822).

, 2022
In this study we report novel information on the opening position of the spermatic duct of Arapaima gigas, and method to collect semen in live ...
KIRSCHNIK, L. N. G., TORATI, L. S., LIMA, A. F., LOPES, J. T.   +3 more
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Genetic diversity of Arapaima gigas (Schinz, 1822) (Osteoglossiformes: Arapaimidae) in the Araguaia-Tocantins basin estimated by ISSR marker

Neotropical Ichthyology
The genetic diversity of the specimens of four natural populations of Arapaima from Araguaia-Tocantins basin was assessed within and among these stocks, using five primers for ISSR.
Carla A. Vitorino, Renata C. C. Oliveira, Vladimir P. Margarido, Paulo C. Venere   +3 more
doaj   +1 more source