Results 51 to 60 of about 573 (150)

Production cost of tambaqui (Colossoma macropomum) and tambatinga and tambacu hybrids in net cages [PDF]

open access: yesActa Amazonica
The objective of this study was to determine the production cost of tambaqui (Colossoma macropomum) and the hybrids tambatinga (female tambaqui x male pirapitinga, Piaractus brachypomus) and tambacu (female tambaqui x male pacu, Piaractus mesopotamicus ...
Ana Carla Carvalho SILVA   +10 more
doaj   +1 more source

Effects of Environmentally Relevant Concentrations of Roundup on Oxidative‐Nitrative Stress, Cellular Apoptosis, Prooxidant‐Antioxidant Homeostasis, Renin and CYP1A Expressions in Goldfish: Molecular Mechanisms Underlying Kidney Damage During Roundup Exposure

open access: yesEnvironmental Toxicology, Volume 40, Issue 5, Page 817-834, May 2025.
ABSTRACT Roundup is one of the most widely used glyphosate‐based harmful herbicides in the United States as well as globally, which poses a severe risk for terrestrial and aquatic organisms. In order to identify the detrimental effects of Roundup exposure in aquatic organisms, we investigated the environmentally relevant concentrations of Roundup ...
Md Imran Noor, Md Saydur Rahman
wiley   +1 more source

Quantifying Invasiveness Risk of Non‐Native Freshwater Fishes in South Korea Under a Changing Climate

open access: yesFisheries Management and Ecology, Volume 32, Issue 1, February 2025.
ABSTRACT Biological invasions pose a serious threat to native biodiversity, and climate change intensifies the risk of non‐native species invasion in human‐altered environments, particularly in freshwater ecosystems. In South Korean freshwaters, the number of non‐native fish species increased significantly since the early 1950s.
Baran Yoğurtçuoğlu   +2 more
wiley   +1 more source

Piscicultura de água doce : reprodução e alevinagem [PDF]

open access: yes, 2003
Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Engenharia de Aquicultura.
Corrêa, Rogério Nappi
core  

Methionine plus cystine to lysine ratio in diets for tambatinga fingerlings

open access: yesCiência e Agrotecnologia, 2021
Among a variety of hybrids produced in Brazil, tambatinga is obtained from the crossing of a tambaqui female with a pirapitinga male. Although rapid weight gain in less time is an attractive characteristic from a commercial viewpoint, the information on ...
Dayana da Conceição da Costa   +5 more
doaj   +1 more source

Genetic diversity and population structure of Brycon nattereri (Characiformes: Bryconidae): a Neotropical fish under threat of extinction

open access: yesNeotropical Ichthyology, 2019
Brycon nattereri is an endangered Neotropical fish reported along conserved stretches of the upper Paraná, Tocantins and São Francisco rivers. Populations of this species have been very rare in some Paraná River sub basins.
Bruno A. Galindo   +8 more
doaj   +1 more source

Seedling Production of Cherry Tomato (Solanum lycopersicum var. cerasiforme) on Different Substrates Using Wastewater from a Recirculating Aquaculture System

open access: yesAgriculture
This study evaluated cherry tomato seedling production using pirapitinga RAS wastewater as the sole nutrient source in four substrate formulations: T1 (sand, gravel and coconut fiber), T2 (sand and gravel), T3 (gravel and coconut fiber), and T4 (sand and
Wagner Junio de Freitas Martins   +6 more
doaj   +1 more source

Caracterização do uso de malhadeiras pela frota pesqueira que desembarca em Manaus e Manacapuru, Amazonas Characterization of gillnet fisheries landed in Manaus and Manacapuru, Central Amazon

open access: yesActa Amazonica, 2009
A malhadeira é um apetrecho de pesca frequentemente utilizado na pesca regional. O presente estudo visa verificar características das malhadeiras utilizadas nos diversos subsistemas da Amazônia Central, seu uso e a aplicação de normas legais relacionadas.
Valdelira Lia Araújo Fernandes   +2 more
doaj   +1 more source

Implicações ambientais decorrentes das atividades antrópicas na bacia hidrográfica do Córrego Pirapitinga em Ituiutaba/MG [PDF]

open access: yes, 2019
Trabalho de Conclusão de Curso (Graduação)A formação dos depósitos tecnogênicos está ligada de modo direto e/ou indireto as atividades antrópicas, pois estas atividades vêm alterando diversos aspectos da natureza, tendo como característica principal a ...
Silva, Aline dos Santos
core   +1 more source

Termite Foraging on Plants of a Brazilian Savanna: the Effects of Tree Height

open access: yesSociobiology, 2018
Termites play an important role as ecosystem engineers in many tropical environments, acting as herbivore-detritivore organisms and strongly influencing vegetation structure and composition by modifying soil properties, providing nutrients by recycling ...
Geraldo Wilson Fernandes   +5 more
doaj   +1 more source

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