Article
Fisheries
Fabio Carneiro Sterzelecki, Gabriel Rodrigues Santos, Monica Trindade Abreu de Gusmao, Thayanne Cristine Caetano de Carvalho, Alex Ribeiro dos Reis, Rayane Guimaraes, Maria de Lourdes Souza Santos, Nuno Filipe Alves Correia de Melo, Ronald Kennedy Luz, Glauber David Almeida Palheta
Summary: Studies on integrated farming of shrimp with vegetables are limited. This study evaluated the effects of decreasing concentration of hydroponic solution on water quality and growth of Amazon river prawn and lettuce seedlings. Results showed that ammonia and nitrate levels in rearing tanks increased with the hydroponic solution, impacting shrimp growth and survival. However, lettuce growth was not significantly affected in the initial 14 days, with improvements observed after 18 days with 100% solution. Adding a 20% hydroponic solution is recommended to promote lettuce growth without affecting shrimp development.
Article
Fisheries
Claudia Caramelo Brazao, Rafael Ortiz Kracizy, Fabricio Martins Dutra, Ana Paula de Oliveira, Rafael Itamar da Silva, Eduardo Luis Cupertino Ballester
Summary: This study aimed to evaluate the combined effect of total ammonia and nitrite on Macrobrachium amazonicum juveniles, showing that the prawns exhibited greater tolerance to total ammonia and nitrite concentrations when they were combined, demonstrating antagonistic effects.
Article
Ecology
Julia Fernandes Perroca, Caio Santos Nogueira, Abner Carvalho-Batista, Rogerio Caetano Costa
Summary: There is a clear gender difference between males and females of Macrobrachium amazonicum, with males more commonly found in larger size classes; males have a higher growth rate but shorter lifespan and higher mortality rate. Environmental changes and anthropic influences lead to system instability, resulting in shorter lifespan, faster growth rates, and smaller asymptotic sizes for both sexes.
Article
Zoology
Lucas Rezende Penido Paschoal, Fernando Jose Zara
Summary: The study compared the sperm production and concentration patterns among different phenotypes and populations of Macrobrachium amazonicum, revealing clear differences in investment allocation between morphotypes, with dominant males focusing more on sexual weapons development and smaller males directing more energy towards sperm production.
Article
Fisheries
Fabricio Martins Dutra, Maria Kelviane Costa Gomes, Plinio Schmidt Furtado, Milton Ronnau, Eduardo Luis Cupertino Ballester
Summary: The study showed that nitrate concentration has a significant impact on the growth and welfare of Macrobrachium amazonicum juvenile. A decrease in growth rate and damage to gill tissue were observed at concentrations of 16 mgL(-1) and 32 mgL(-1) nitrate.
Article
Fisheries
Claudia Caramelo Brazao, Rafael Ortiz Kracizy, Fabricio Martins Dutra, Matheus Coelho Gomes Rodrigues, Eduardo Luis Cupertino Ballester
Summary: This study aimed to determine the median lethal concentration (LC50) of combined total ammonia and nitrite for two species of prawns, and to determine their safety levels. The study found that the Amazonian freshwater prawn was more sensitive to the combined effect of total ammonia and nitrite, while the Rosenbergii freshwater prawn was more resistant.
Article
Fisheries
Paulo Mantoan, Eduardo Ballester, Andressa Cristina Ramaglia, Alessandra Augusto
Summary: This study investigated the effect of different protein levels in the diet on the growth, feces production, and energy utilization of Macrobrachium amazonicum. The results showed that a diet containing 35% protein was beneficial for enhancing growth and minimizing energy loss.
AQUACULTURE REPORTS
(2021)
Article
Anatomy & Morphology
Lucas Rezende Penido Paschoal, Fernando Jose Zara
Summary: The morphological, histochemical and ultrastructural aspects of ovarian development in three phenotypes of Macrobrachium amazonicum were analyzed. Despite the morphological differences and different reproductive strategies adopted by the females, the patterns of ovarian development showed no differences between the phenotypes.
Article
Fisheries
Fernanda S. David, Danilo C. Proenca, Dallas L. Flickinger, Guilherme Wolff Bueno, Wagner C. Valenti
Summary: This study focused on the carbon budget of integrated multitrophic aquaculture systems in earthen ponds, with the findings indicating that the farmed species have relatively low conversion rates of carbon and that the addition of substrates has minimal impact on carbon assimilation.
AQUACULTURE RESEARCH
(2021)
Article
Marine & Freshwater Biology
Deborah E. G. Martins, Katia C. A. Silva, Alex G. C. M. Klautau, Israel H. A. Cintra, Flavio A. Alves-Junior
Summary: This study reports morphological abnormalities in the specimens of Macrobrachium amazonicum collected from the lower Tocantins River in the State of Para, Brazil. Three individuals showed abnormal morphology in their rostrum and telson. This is the first record of such abnormalities in this species, but further investigation is needed to understand the cause.
Article
Marine & Freshwater Biology
Emerson Ventura, Allysson Winick-Silva, Renata A. Shinozaki-Mendes
Summary: This study analyzed the relative growth and reproduction of female Macrobrachium amazonicum in the semiarid Northeast region of Brazil. The analysis showed that total length increased more than carapace region, and that weight increased more than size due to energy cost in reproduction. The study also determined the size at the onset of maturity and estimated the maximum fecundity. The continuous reproduction and occurrence of ovigerous females were influenced by seasonal variations.
JOURNAL OF CRUSTACEAN BIOLOGY
(2022)
Article
Marine & Freshwater Biology
Lucas R. P. Paschoal, Fernando J. Zara, Sonia Rocha, Angela Alves, Graca Casal, Carlos Azevedo
Summary: The study describes a co-infection of two microsporidians within the abdominal muscle of the Amazon River prawn Macrobrachium amazonicum from Brazil, with two spore types likely belonging to the genera Inodosporus and Myospora based on ultrastructural organization. The spores were divided into two morphotypes, Sp. 1 and Sp. 2, with distinct characteristics in shape, size, and internal organization. Their developmental stages occurred within the muscle cells in close contact with myofibrils.
Article
Zoology
Barbara Regina Fernandes da Cruz, Caio Santos Nogueira, Alessandra Angelica Padua Bueno, Giuliano Buza Jacobucci
Summary: This study aimed to assess the natural diet of Macrobrachium amazonicum prawns in northern Brazil and found that the diet did not significantly differ between sexes or seasons, indicating that food preference may depend on the availability of food in the environment. The study also found microplastics in the prawns' stomachs, indicating contamination in the aquatic environment resulting from unsustainable human activities.
STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT
(2023)
Article
Biodiversity Conservation
Chiao-Chuan Han, Chien-Hung Lai, Chi-Chun Huang, I-Chen Wang, Hung-Du Lin, Wei-Kuang Wang
Summary: This study investigated the phylogeographic structures and demographic history of Macrobrachium japonicum in Taiwan and the Ryukyu Islands. The results showed recent expansion and decline in population size of M. japonicum, which are important for the study of conservation genetics, management, and sustainable resource utilization.
Article
Anatomy & Morphology
Caio S. Nogueira, Mariana Antunes, Fernando J. Zara, Rogerio C. Costa
Summary: Studies on reproductive system morphology are crucial for understanding the reproduction processes of species, genera, or families. This study aimed to describe the functional morphology of the male reproductive system, spermatophore formation, and sperm count of Macrobrachium brasiliense. The anatomy of the reproductive system includes a pair of testes connected to the vasa deferentia (VD) extending to the fifth pair of pereopods. The VD is divided into proximal (PVD), middle (MVD), and distal (DVD) regions, each with distinctive epithelial characteristics. The typhlosole and columnar epithelium in the PVD play a role in asymmetrical spermatophore formation, which is a common pattern among caridean shrimps.
Article
Fisheries
Ariel C. Franchini, Gelcirene A. Costa, Stefany A. Pereira, Wagner C. Valenti, Patricia Moraes-Valenti
Article
Chemistry, Applied
Tavani Rocha Camargo, Patricia Ramos, Jose M. Monserrat, Carlos Prentice, Celio J. C. Fernandes, Willian F. Zambuzzi, Wagner C. Valenti
Summary: The study found that protein hydrolysates from fish bycatch have antioxidant activity, no impact on cell viability at low doses, and can modulate extracellular and intracellular pathways.
Article
Biodiversity Conservation
Stefany A. Pereira, Janaina M. Kimpara, Wagner C. Valenti
Summary: Seaweed cultivation, particularly focusing on Hypnea pseudomusciformis, has been shown to be a sustainable production system that takes into account environmental, social, and economic dimensions. The study found that the cultivation of H. pseudomusciformis had highly efficient use of resources, contributed to local community income, and was highly profitable with positive externalities. The results suggest that seaweed farming could be a sustainable way to produce high-quality human food and raw materials for industry along the tropical Atlantic Southwestern coast.
ECOLOGICAL INDICATORS
(2021)
Article
Fisheries
Wagner C. Valenti, Helenice P. Barros, Patricia Moraes-Valenti, Guilherme W. Bueno, Ronaldo O. Cavalli
Summary: Aquaculture in Brazil has a long history, with freshwater fish and marine shrimp being the main products produced. The industry is dominated by small farms and faces the challenge of developing sustainable production systems and leveraging new technologies and innovations to support its growth.
AQUACULTURE REPORTS
(2021)
Article
Biotechnology & Applied Microbiology
Tavani Rocha Camargo, Simon Khelissa, Nour Eddine Chihib, Emilie Dumas, Jian Wang, Wagner C. Valenti, Adem Gharsallaoui
Summary: The study demonstrates that complexation with pea protein and subsequent microencapsulation effectively enhance the antioxidant activity of protein hydrolysates while preserving their biological activity. Protein hydrolysates obtained from bycatch could serve as potential sources of functional ingredients or nutraceuticals.
MARINE BIOTECHNOLOGY
(2021)
Article
Fisheries
Fernanda S. David, Danilo C. Proenca, Dallas L. Flickinger, Guilherme Wolff Bueno, Wagner C. Valenti
Summary: This study focused on the carbon budget of integrated multitrophic aquaculture systems in earthen ponds, with the findings indicating that the farmed species have relatively low conversion rates of carbon and that the addition of substrates has minimal impact on carbon assimilation.
AQUACULTURE RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Dalton Belmudes, Fernanda S. David, Fernando H. Goncalves, Wagner C. Valenti
Summary: The study assessed the sustainability of a Deuterodon iguape hatchery in an Atlantic Rainforest Park, aiming to provide income and food security for local families through farming of the small native fish. The hatchery demonstrated high return on investment, attracting both public and private investors, while also having minimal environmental impact.
Article
Green & Sustainable Science & Technology
Aline M. Marques, Andre Z. Boaratti, Dalton Belmudes, Julia R. C. Ferreira, Paulo V. L. Mantoan, Patricia Moraes-Valenti, Wagner C. Valenti
Summary: This study evaluated the culture of multiple ecological-function species to recover nutrients and transform them into high-valued biomass, improving the efficiency of space utilization and the value of biomass.
Article
Fisheries
Daniela P. Dantas, Dallas L. Flickinger, Gelcirene A. Costa, Patricia Moraes-Valenti, Wagner C. Valenti
Summary: This study evaluated the economic feasibility of Amazon River prawn and tambaqui grow-outs in a subtropical region of Brazil and considered the transfer of the fish to agricultural greenhouses for the winter season. Simulations showed that all systems were economically feasible, with larger properties having shorter payback periods and greater profitability.
AQUACULTURE INTERNATIONAL
(2022)
Article
Biodiversity Conservation
Naor S. Fialho, Wagner C. Valenti, Fernanda S. David, Elisa M. Godoy, Danilo C. Proenca, Rodrigo Roubach, Guilherme Wolff Bueno
Summary: This study evaluated the environmental sustainability of Nile tilapia net-cage farms of different sizes using environmental sustainability indicators and benchmarks. Results showed that environmental sustainability is independent of farm size, with factors like feed composition, management techniques, and water temperature being more critical. The use of benchmarking tools can provide reference values for each environmental sustainability indicator, allowing improvements to reach desirable states.
ECOLOGICAL INDICATORS
(2021)
Article
Biotechnology & Applied Microbiology
Tavani R. Camargo, Paulo Mantoan, Patricia Ramos, Jose M. Monserrat, Carlos Prentice, Celio C. Fernandes, Willian F. Zambuzzi, Wagner C. Valenti
Summary: This study evaluated the bioactivity of protein hydrolysates prepared from two common crabs caught in the shrimp fisheries in Brazil. The hydrolysates showed antioxidant activity and no cytotoxic effects on cells, suggesting their potential use as nutraceutical ingredients in the food industry.
MARINE BIOTECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Tamara Fonseca, Wagner C. Valenti, Biagio F. Giannetti, Fernando H. Goncalves, Feni Agostinho
Summary: This study assesses the sustainability of lambari aquaculture in Brazil using the emergy synthesis method and proposes improvements. The results suggest that the current farming systems have low efficiency, but sustainability can be improved by increasing productivity, improving water source utilization, and modifying feed composition.
Article
Environmental Sciences
Gustavo Gonzaga Henry-Silva, Julio Cesar da Silva Cacho, Rodrigo Savio Teixeira Moura, Dallas Lee Flickinger, Wagner C. Valenti
Summary: A net-cage Nile tilapia production system implemented in a reservoir in the hot semi-arid region of Brazil is strongly affected by long drought events. However, it still provides food, generates wealth, and promotes social development for the local population with low environmental impact.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Fisheries
F. Gilson, M. B. New, L. A. Rodrigues, W. C. Valenti
Summary: This study describes the downstream supply and value chains in commercial tambatinga farming in Midnorth Brazil, focusing on the impacts of farm size on intermediaries, job creation, income generation, and wealth beneficiaries. The results show that different farm sizes have varying effects on these factors. Small farms selling directly to consumers generate significant wages and allow for wealth distribution, while larger farms relying on intermediaries result in fewer wealth beneficiaries. This model of small fish farms has the potential to alleviate poverty and reduce inequalities.
AQUACULTURE INTERNATIONAL
(2023)
