Results 51 to 60 of about 368 (163)

Fine‐Scale Genomic Divergence in the Amazonian Pirarucu (Arapaima gigas) Highlights the Need for Local Management Strategies

Freshwater Biology, Volume 71, Issue 3, March 2026.
ABSTRACT Freshwater habitats face significant human disturbances globally, impacting food security and ecosystems. Protected areas can mitigate biodiversity loss, but limited data on population connectivity hinders conservation management. This study examines pirarucu (Arapaima gigas), a heavily exploited and threatened Amazonian fish, using genomic ...
Julia Tovar Verba, Ricardo J. Pereira, João V. Campos‐Silva, Izeni P. Farias, Tomas Hrbek, Carlos A. Peres, Joseph E. Hawes   +6 more
wiley   +1 more source

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

Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins [PDF]

Neotropical Ichthyology, 2020
The South American giant fishes of the genus Arapaima, commonly known as pirarucu, are one of the most iconic among Osteoglossiformes. Previously cytogenetic studies have identified their karyotype characteristics; however, characterization of ...
Ezequiel A. de Oliveira, Francisco de M. C. Sassi, Manolo F. Perez, Luiz A. C. Bertollo, Petr Ráb, Tariq Ezaz, Terumi Hatanaka, Patrik F. Viana, Eliana Feldberg, Edivaldo H. C. de Oliveira, Marcelo de B. Cioffi   +10 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

Pirarucu: reprodução e novas tecnologias de cultivo

Revista Semiárido De Visu, 2020
A proposta desta revisão é realizar uma sinopse sobre o potencial da produção de pirarucu Arapaima gigas através da aquicultura. O pirarucu é considerado um dos principais produtos pesqueiros da bacia hidrográfica do rio Amazonas. Os cientistas estão preocupados com o declínio do pirarucu na natureza.
openaire   +2 more sources

The complete mitochondrial genome of the pirarucu (Arapaima gigas, Arapaimidae, Osteoglossiformes)

Genetics and Molecular Biology, 2008
We sequenced the complete mitochondrial genome of the pirarucu, Arapaima gigas, the largest fish of the Amazon basin, and economically one of the most important species of the region.
Tomas Hrbek, Izeni Pires Farias
doaj   +1 more source

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

Combined Efficacy of Curcuma longa and Spirulina platensis Enhancing Growth, Immunity, Coloration, and Resilience to Ammonia Stress in Balloon Molly, Poecilia sphenops

Aquaculture Research, Volume 2026, Issue 1, 2026.
Turmeric (TUR), Curcuma longa, is rich in bioactive substances, and spirulina (SPR), Spirulina platensis, is a source of protein that is highly digestible. This research investigated the combined effects of dietary C. longa and Spirulina platensis on the growth, nutritional composition, coloration, immunity, and gill health of balloon molly fish ...
Attia A. Abou Zaid, Ahmed E. Elshafey, Bin Wen, Gaber El-Saber Batiha, Eman T. Al-Sokary, Mona E. Abass, Ghada El-Khader, Nagwa H. Mohammed, Sabah H. El-Ghaiesh, Mohamed M. Abdel Rahim, Afnan H. Saaty, Fatimah M. Yousef, Rema Abdulhameed Turkustani, Mohamed H. Mahmoud, Jian-Zhong Gao, Zai-Zhong Chen   +15 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

Níveis de proteína bruta para juvenis de pirarucu Crude protein levels for juvenile pirarucu

Pesquisa Agropecuária Brasileira, 2005
O objetivo deste trabalho foi avaliar o efeito de quatro níveis de proteína sobre o crescimento de juvenis de pirarucu, Arapaima gigas. O experimento foi conduzido em delineamento inteiramente casualizado, com de quatro tratamentos (32,7%, 39,3%, 43,4% e 48,6% de proteína bruta), três repetições cada. Foram utilizados 120 peixes, com peso médio inicial
Daniel Rabello Ituassú, Manoel Pereira Filho, Rodrigo Roubach, Roger Crescêncio, Bruno Adan Sagratzki Cavero, André Lima Gandra   +5 more
openaire   +1 more source