A5049154462- Fish biology, ecology, and behavior
- Aquaculture Nutrition and Growth
- Fish Biology and Ecology Studies
- Ichthyology and Marine Biology
- Aquaculture disease management and microbiota
- Environmental Sustainability and Education
- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Amphibian and Reptile Biology
- Turtle Biology and Conservation
- Science and Education Research
- Animal Nutrition and Physiology
- Environmental Toxicology and Ecotoxicology
- Education Pedagogy and Practices
- Agricultural and Food Sciences
- Mercury impact and mitigation studies
- Delphi Technique in Research
- Parasite Biology and Host Interactions
- Comparative Animal Anatomy Studies
- Animal and Plant Science Education
- Meat and Animal Product Quality
- Urban Development and Societal Issues
- Freezing and Crystallization Processes
- Collagen: Extraction and Characterization
- Livestock and Poultry Management
Instituto Federal do Amazonas
2015-2025
Universidade Federal do Rio de Janeiro
2023-2025
Amazon (United States)
2025
Universidade Federal do Amazonas
2007-2024
Centro Universitário Curitiba
2024
Amazon (Germany)
2024
Instituto Federal de Educação, Ciência e Tecnologia de Brasília
2022
Morpho (United States)
2021
State University of Norte Fluminense
2021
Universidade Federal do Delta do Parnaíba
2020
This study aims to investigate the effects of freeze-drying on structure freeze-dried Oreochromis niloticus tilápia fish at different processing times. Foram analyzed water activity (Aw), texture, core and Varredura Electron Microscopy (MEV). The results demonstrate alterations in theory mass two fibers over a long period time, with formation fissures detachment muscle fibers. process are greater than we file them less (2.5 kg) for 36 hours. use dehydration has been shown be effective,...
Consumption of turtles by natives and settlers in the Amazon Orinoco has been widely studied scientific communities. Accepted cultural customs local dietary monetary needs need to be taken into account conservation programs, when implementing federal laws related consumption fishing methods. This study was conducted around Purus River, a region known for illegal trade turtles. The objective this quantify turtle Tapauá understand its effect on economy. municipality state Amazonas, Brazil. To...
Mercury is an element with potential risk to fish and those who consume it. Thus, this study aimed determine the levels of total mercury (THg), carry out a health assessment related consumption freshwater stingrays Potamotrygon motoro, physical chemical properties water where occur. Stingrays species P. motoro were obtained from Amazon River, samples animals' musculature collected THg levels. Risk was conducted using pre-established formulas estimated monthly intake (EMI), maximum rate...
The physiological responses of juvenile tambaqui (Colossoma macropomum) fed commercial feed supplemented with different concentrations camu (Myrciaria dubia) were evaluated. design was completely randomized, treatments arranged in a factorial three proportions (15%, 30% and 45%) control treatment (100% diet), four replicates per treatment. A total 96 specimens used, mean initial weight 11.69 ± 2.68 g length 7.06 0.44 cm. After 30 days, hematological parameters, metabolic variables, growth...
This paper aimed to study and compare the hematology of newborns, young, subadults, adult males, females pregnant Potamotrygon wallacei (cururu stingray), motoro Paratrygon aiereba. Newborn cururu stingrays had lower red blood parameters than those other development stages. Thrombograms leukograms showed a conservative pattern between stage, sexual dimorphism pregnancy. In P. aiereba, variables relating parameters, biochemistry little variation species' biological characteristics, thus...
Abstract Fish processing provides waste of around 50.0% to 70.0% the animal's initial weight, especially skin. Thus, this residue contains by-product that allows biopolymers be obtained, highlighting collagen, which can widely used in different areas. The present study aimed evaluate yield collagen extracted from peacock bass Cichla monoculus skin and characterize them physicochemically. Twenty-five with an average weight 646 ± 175 g were used. samples removed by manual filleting weighed,...
O objetivo deste estudo foi elaborar um instrumento de auto-relato para avaliar dimensões práticas educativas parentais em relação a adolescentes. Participaram do 409 adolescentes (57,9%, com média idade 16,52 anos), dos quais 298 forneceram protocolos completos. Foram gerados inicialmente 62 itens diversas parentais. A estrutura subjacente ao conjunto avaliada através análises componentes principais. Sucessivas permitiram chegar uma solução interpretável 6 27 itens, onde cada item...
The objective of this study was to compare and correlate the ecology neonates young individuals Potamotrygon wallacei, motoro Paratrygon aiereba with regard their hematological profile physicochemical parameters water that they inhabit. Principal component analysis (PCA) on complete blood count revealed total variation 72.92%, thus demonstrating a differentiation system for oxygen demand. On other hand, P. considered be an intermediate species, given its characteristics interacted both...
The objective of this study is to identify the economic–financial viability, attractiveness potential, and investment risks tambaqui farming in state Amazonas, Brazil. Tambaqui main native fish Brazilian aquaculture. A survey was conducted for 240 farms, analyzed through Monte Carlo simulations. It found that fluctuation feed (US$0.49 ± 0.09 kg−1) prices (US$1.77 0.48 exerts a great influence on profitability projects. In general, results indicate it difficult make farms profitable. use...
Abstract The tambaqui (Colossoma macropomum) is a fish of primary importance in South American aquaculture, principally the Amazon region and has particularly unique diet wild. Oryza spp, or Wild rice as it commonly known, native to floodplains muddy rivers region. aim this study was analyze physical performance effects dietary levels spp. via hematological parameters, total food intake, conversion efficiency, growth ratio swimming fish. Diets containing 45% induced best tambaqui. 15% 30%...
In the present work, we examined morphology, dimensions, cytochemical staining reactions and ultrastructure of blood cells from three freshwater stingray species, Potamotrygon wallacei, motoro Paratrygon aiereba, living in waters middle Rio Negro basin (Barcelos, Amazonas, Brazil). We identified erythrocytes, erythroblasts, thrombocytes four types leukocytes (basophils, heterophils, lymphocytes monocytes) these species. all species studied, shapes dimensions were similar to those marine...
Summary This study aimed to analyze the influence of different temperatures on embryonic and larval development discus fish Symphysodon aequifasciatus determine time required for beginning exogenous feeding. Eggs larvae were obtained from natural spawns distributed in five treatments: 24.0, 26.0, 28.0, 30.0, 32.0 °C. To assess developmental stages structures, samples taken at regular intervals checked under an optical microscope. At end experimental period, statistical analysis was...