Article
Fisheries
Luana Rodrigues Vieira, Yago Luiz Gonsalves Pereira, Laura Andrade Diniz, Chirlene Pinheiro Nascimento, Alex Luiz Mendesda Silva, Julianne Elba Cunha Azevedo, Vanessa Joia de Mello, Nilton Akio Muto, Luis Andre Luz Barbas, Moises Hamoy
Summary: The study investigated the behavior and physiological responses of tambaqui fish (C. macropomum) to different concentrations of lidocaine hydrochloride in immersion baths and after transfer to anesthetic-free water. The results showed that the fish exhibited loss of the righting reflex and significant muscle relaxation upon exposure to lidocaine hydrochloride. Higher concentrations also caused a decreased heart rate and altered T wave tracing. However, the reversible nature of these responses suggests that lidocaine hydrochloride can be safely used as an alternative anesthetic for tambaqui fish.
Review
Green & Sustainable Science & Technology
Nesar Ahmed, Giovanni M. Turchini
Summary: Recirculating Aquaculture Systems (RAS) are a potential adaptation strategy for sustainable fish production in response to climate change, offering eco-friendly, water-efficient, highly productive features with minimal environmental impact. While energy consumption and greenhouse gas emissions are constraints, RAS operate indoors and are not significantly affected by climatic factors, making them a promising direction for future fisheries development.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Forestry
Diego Oliveira Brandao, Lauro Euclides Soares Barata, Carlos Afonso Nobre
Summary: This article reviews the impact of human-induced environmental changes on forest products and forest-dependent communities in the Amazon region. The study finds that populations of species associated with forest products are decreasing due to deforestation and selective logging, leading to changes in species composition and loss of valuable species. Over 1 billion native trees and palms are being lost every two years, resulting in economic losses estimated between US$1-17 billion. This loss of native plant species has long-lasting effects on the economic opportunities of forest-dependent communities. However, investments in science and technology offer potential solutions for recovering deforested and degraded lands and engaging companies that use forest products.
Article
Green & Sustainable Science & Technology
Kerry W. Bowman, Samuel A. Dale, Sumana Dhanani, Jevithen Nehru, Benjamin T. Rabishaw
Summary: The Amazon faces threats from illegal deforestation, fires, and agricultural expansion. Indigenous Protected Areas and Protected Natural Areas are crucial defenses against destruction, with their protection helping to prevent deforestation, fires, and climate change.
CURRENT OPINION IN ENVIRONMENTAL SUSTAINABILITY
(2021)
Article
Environmental Sciences
Naim M. Bautista, Amelie Crespel
Summary: The unprecedented rates of change in environmental conditions due to climate change pose challenges to the coping capacities and resilience of organisms within and across generations. Future research should focus on considering variability in different time-scale events, plastic responses from embryonic to adult stages, species life-history traits, and trans-generational effects on individual survival and population maintenance.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Fisheries
Patrick Charapata, Stephen Trumble
Summary: Climate change poses a threat to fisheries health, but its effects on the physiology and ecology of commercial fish populations are not well understood. In this study, growth increments of female yelloweye rockfish opercula were analyzed to reconstruct lifetime steroid hormone, stable isotope, spawning, and stress data. The results suggest that increasing sea surface temperature may negatively affect the reproductive development of juvenile and subadult females. Spawning frequency was found to be linked to changes in climate indices, indicating favorable conditions for larval survival.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Environmental Sciences
Carlos Antonio da Silva Junior, Mendelson Lima, Paulo Eduardo Teodoro, Jose Francisco de Oliveira-Junior, Fernando Saragosa Rossi, Beatriz Miky Funatsu, Weslei Butturi, Thais Lourenconi, Aline Kraeski, Tatiane Deoti Pelissari, Francielli Aloisio Moratelli, Damien Arvor, Iago Manuelson dos Santos Luz, Larissa Pereira Ribeiro Teodoro, Vincent Dubreuil, Vinicius Modolo Teixeira
Summary: The Amazon Basin is experiencing environmental degradation due to deforestation and an increase in fires. The fires are made worse by anomalously dry periods in the region.
Article
Fisheries
Patricia Oliveira Maciel, Elizabeth Gusmao Affonso
Summary: The study investigated the effects of Praziquantel on the hematological parameters of tambaqui and its efficacy against monogeneans, finding lower concentrations of PZQ to be more effective against specific parasites. The use of ethanol as a solvent did not significantly impact the physiology of tambaqui.
AQUACULTURE INTERNATIONAL
(2021)
Article
Green & Sustainable Science & Technology
Elton Luis da Silva Abel, Rafael Coll Delgado, Regiane Souza Vilanova, Paulo Eduardo Teodoro, Carlos Antonio da Silva Junior, Marcel Carvalho Abreu, Guilherme Fernando Capristo Silva
Summary: The study analyzed the environmental dynamics of the Jurua Watershed in the Amazon, highlighting rainfall as the variable with the greatest influence and showing a significant decrease in flooded areas in the future as predicted by the ARIMA model.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Multidisciplinary Sciences
Diane Z. Chase, Jose Lobo, Gary M. Feinman, David M. Carballo, Arlen F. Chase, Adrian S. Z. Chase, Scott R. Hutson, Alanna Ossa, Marcello Canuto, Travis W. Stanton, L. J. Gorenflo, Christopher A. Pool, Barbara Arroyo, Rodrigo Liendo Stuardo, Deborah L. Nichols
Summary: Urban adaptation to climate change is a global challenge. Efforts to leverage insights from the urban past have been hindered by disciplinary silos and misconceptions about prehistoric urban settlements, especially in prehispanic Mesoamerica. However, advances in archaeology have significantly enhanced our understanding of prehispanic urbanism in Mesoamerica, highlighting its resilience and adaptation to environmental change. This calls for a dialogue among urban archaeologists, sustainability scientists, and researchers interested in urban adaptation to climate change, aiming to shift the focus from failure and collapse to resilience and factors that fostered adaptation and sustainability.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Agriculture, Dairy & Animal Science
Juan Manuel Molina, Andreas Kunzmann, Joao Pena Reis, Pedro Miguel Guerreiro
Summary: In this study, the metabolic rates, thermal, and oxygen-related limits of Halobatrachus didactylus were estimated for the first time. The results show that this species is remarkably resilient to acute environmental variations in temperature and oxygen content, which suggests its ability to adapt to future extreme abiotic conditions in the oceans.
Article
Fisheries
Ednara Ronise L. de Araujo, Marcelo F. Torres, Moises Hamoy, Luis Andre L. Barbas, Luis Andre Sampaio
Summary: This study evaluated the cardiotoxic effects of geraniol and citronellol in Colossoma macropomum. The results showed that both substances caused changes in the fish's ECG parameters, but geraniol had a faster recovery time compared to citronellol.
Article
Multidisciplinary Sciences
Ana C. Rorato, Ana Paula Dal'Asta, Raquel Martins Lana, Ricardo B. N. dos Santos, Maria Isabel S. Escada, Camila M. Vogt, Tatiana Campos Neves, Milton Barbosa, Cecilia S. Andreazzi, Izabel C. dos Reis, Danilo A. Fernandes, Monica da Silva-Nunes, Anielli R. de Souza, Antonio M. V. Monteiro, Claudia T. Codeco
Summary: The Trajetorias dataset is a comprehensive set of environmental, epidemiological, and poverty indicators for all municipalities in the Brazilian Legal Amazon. It consolidates multidisciplinary indicators into a coherent dataset for integrated and interdisciplinary studies of the region. This dataset enables the investigation of the relationship between agrarian systems and their impact on environmental and epidemiological changes in the Amazon forest.
Article
Fisheries
Matheus Gomes da Cruz, Gabriela Tomas Jeronimo, Gabriel dos Santos Torres, Lorena Vieira de Matos, Driely Kathriny Monteiro dos Santos, Bianca Natally Viana Serra, Thiago Macedo Santana, Ligia Uribe Goncalves
Summary: This study investigated the acute toxicity, behavioral and histological effects of trichlorfon on arapaima larvae. The results showed that trichlorfon concentrations of <= 250 mg/L and short exposure times (up to 180 min) can be safely used in arapaima larvae without adverse effects.
AQUACULTURE REPORTS
(2022)
Article
Engineering, Marine
Ana Picado, Humberto Pereira, Magda C. Sousa, Joao Miguel Dias
Summary: The most suitable areas for aquaculture in Ria de Alvor were found to be along the main channel, especially during spring. Future projections indicate a decrease in aquaculture suitability during winter for bivalve species and during summer for Mussels, primarily due to the predicted increase in water temperature.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Fisheries
Jhonatan M. da Silva, Arlan de Lima Paz, Adalberto L. Val
Summary: The study found that carvacrol-enriched diet improved the growth, hemato-immune system, metabolism, and resistance to Aeromonas hydrophila infection in tambaqui fish.
AQUACULTURE RESEARCH
(2021)
Article
Environmental Sciences
Jochen Schongart, Florian Wittmann, Angelica Faria de Resende, Cyro Assahira, Guilherme de Sousa Lobo, Juliana Rocha Duarte Neves, Maira da Rocha, Gisele Biem Mori, Adriano Costa Quaresma, Layon Oreste Demarchi, Bianca Weiss Albuquerque, Yuri Oliveira Feitosa, Gilvan da Silva Costa, Gildo Vieira Feitoza, Flavia Machado Durgante, Aline Lopes, Susan E. Trumbore, Thiago Sanna Freire Silva, Hans ter Steege, Adalberto Luis Val, Wolfgang J. Junk, Maria Teresa Fernandez Piedade
Summary: The construction and operation of the Balbina dam in the Central Amazon basin have significantly impacted the floodplain forests downstream, leading to a loss of flood pulse dynamics and causing massive tree mortality and ecosystem disruption. This highlights the urgent need for environmental regulatory agencies to consider downstream impacts in their assessments of dam projects in the Amazon region.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Biochemistry & Molecular Biology
Roy E. Weber, Christian Damsgaard, Angela Fago, Adalberto L. Val, Luc Moens
Summary: The evolutionary and ontogenetic changes from water-to air-breathing result in major changes in the cardio-respiratory systems. However, this study found that the oxygen binding properties of hemoglobin in the obligate air-breathing pirarucu remained unchanged during ontogenetic transitions, despite the differences in oxygen availability between water and air.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2022)
Review
Biology
Adalberto Luis Val, Chris M. Wood
Summary: The Amazon region is a unique area in the world, with rich freshwater fish resources, but is currently facing a serious crisis due to climate change and human activities.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Ecology
Nicolas Leroux, Francois-Etienne Sylvain, Eric Normandeau, Aleicia Holland, Adalberto Luis Val, Nicolas Derome
Summary: Lowland central Amazonia is characterized by heterogeneous riverscapes dominated by chemically divergent black and white waters. Recent studies have found that ecological divergence plays a role in the genetic differentiation of fish in these environments, but neutral evolutionary processes explain most of the divergence between populations of Mesonauta festivus.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Biochemistry & Molecular Biology
Francois-Etienne Sylvain, Eric Normandeau, Aleicia Holland, Adalberto Luis Val, Nicolas Derome
Summary: The study reveals significant associations between skin microbiomes and host genotypes in four sympatric piranha teleosts from an Amazonian lake, while gut microbiomes show weak correlations with host genotypes. Diets of piranhas are correlated with host genotypes at the interspecific level but do not covary with gut microbiome composition. Additionally, considering host-associated microbial communities can enhance the detection of interspecific differentiation compared to host genotype data alone.
Article
Immunology
Jaqueline Custodio da Costa, Samara Silva de Souza, Adalberto Luis Val
Summary: The production of tambaqui, the main native fish species in South American waters, has reached a milestone. However, its immunity is poorly understood, and global warming may negatively impact its health due to increased parasitic diseases. An experimental study showed that exposure to extreme climate change conditions led to changes in the tambaqui immune system, with signs of immunodepression in the early stage and recovery after 30 days of exposure.
MICROBIAL PATHOGENESIS
(2022)
Article
Environmental Sciences
Anne Cremazy, Susana Braz-Mota, Kevin V. Brix, Rafael M. Duarte, Adalberto L. Val, Chris M. Wood
Summary: This study investigated the effects of natural dissolved organic matter (DOM) on the acute copper toxicity to local fish in the Rio Negro. The results showed that DOM can decrease the bioavailability and toxicity of copper to fish. Additionally, DOM was found to protect against copper uptake and toxicity in the fish. These findings support the use of the Biotic Ligand Model to assess the risk of copper in Amazonian waters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Fisheries
Renan Diego Amanajas, Adalberto Luis Val
Summary: This study examines the thermal biology of tambaqui, focusing on various aspects such as reproduction, metabolism, and physiology. The optimal temperature range for tambaqui's growth and reproduction is found to be between 25 and 32 degrees Celsius, with temperatures below 23 degrees Celsius being intolerable. High temperatures above 30 degrees Celsius disrupt the reproductive and developmental processes of tambaqui. Tambaqui's metabolism is influenced by the size of the animal and higher temperatures, with smaller animals and higher temperatures leading to greater oxygen consumption. Hematology studies show that elevated temperatures result in higher blood parameters, but temperatures above 35 degrees Celsius are harmful to the animals. Further research is needed to explore the relationship between temperature and nutritional aspects, cellular responses, environmental parameters, pollutants, and the growth and reproduction of tambaqui under warm conditions (>32 degrees Celsius; +60 days).
REVIEWS IN AQUACULTURE
(2023)
Article
Biochemistry & Molecular Biology
R. B. Shartau, T. S. Harter, D. W. Baker, D. L. Aboagye, P. J. Allen, A. L. Val, D. A. Crossley Ii, Z. F. Kohl, C. Damsgaard, M. S. Hedrick, C. J. Brauner
Summary: High CO2 levels can have significant effects on the acid-base regulation in fishes, but the understanding of their acute CO2 tolerance thresholds is limited. This study investigates the relationship between CO2 tolerance and physiological/ecological traits in fishes, using a ramping assay called CDmax. The results show that fishes have high tolerance to CO2, which is associated with air-breathing, but further research is needed to understand the basis of this tolerance.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2022)
Article
Endocrinology & Metabolism
Carlos Henrique dos Anjos dos Santos, Adalberto Luis Val, Vera Maria Fonseca de Almeida-Val
Summary: The study identified the vitellogenin subtype of pirarucu as Vtg-Ab, which has truncated or shortened phosvitin and Phosvitin domains in the N-terminal region. The three-dimensional structure of Vtg-Ab showed a characteristic alpha-helical bundle protein. This research has important implications for understanding the hormonal regulation of vitellogenesis, broodstock management in aquaculture, and production of Vtg antibodies for sex identification.
GENERAL AND COMPARATIVE ENDOCRINOLOGY
(2023)
Article
Environmental Sciences
Talita Laurie Lustosa do Carmo, Mayara Cristina Moraes de Lima, Jose Luiz de Vasconcelos Lima, Samara Silva de Souza, Adalberto Luis Val
Summary: Climate change affects fish appetite and metabolism, leading to changes in fish population. This study investigates the effects of climate change on gene expression levels of appetite-regulating peptides in tambaqui fish. The results reveal high expression levels of Neuropeptide Y (NPY) and Cholecystokinin (CCK) in the brain and variations in peripheral tissues. Fish exposed to extreme climate conditions showed higher NPY expression and lower CCK expression in the telencephalon, along with increased food intake and body growth. This study contributes to understanding the impact of climate change on fish and aids in conservation efforts.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Francois-Etienne Sylvain, Nicolas Leroux, Eric Normandeau, Aleicia Holland, Sidki Bouslama, Pierre-Luc Mercier, Adalberto Luis Val, Nicolas Derome
Summary: Fish bacterial communities in the Amazonian region are influenced by both environmental-specific factors and host-specific factors. This study found that the taxonomic structure of gill bacterial communities varied significantly among different genetic clusters and water types. However, the contribution of the host's genetic background in shaping the abundance of different active gill bacteria species was relatively weak compared to environmental factors. The study highlights the importance of environmental conditions in shaping fish bacterial communities.
MICROBIOLOGY SPECTRUM
(2022)
Article
Green & Sustainable Science & Technology
Maria Sylvia Macchione Saes, Beatriz Macchione Saes, Elis Regina Monte Feitosa, Peter Poschen, Adalberto Luis Val, Jacques Marcovitch
Summary: The bioeconomy is seen as a potential solution for sustainable development and the circular economy by replacing fossil-based raw materials with biomass and biological renewables. The application of alternative methods and indicators is needed to evaluate the socio-biodiversity bioeconomy, as conventional research methods may not capture important factors. The case study on the pirarucu value chain in the Brazilian Amazon demonstrates the viability of the managed fisheries and the importance of local knowledge and collective action.
