Article
Fisheries
Imaculada de Morais Carvalho Ananias, Caroline Lopes de Melo, Deliane Cristina Costa, Andre Lima Ferreira, Edenilce de Fatima Ferreira Martins, Rodrigo Takata, Ronald Kennedy Luz
Summary: This study found that menthol can be used as an anesthetic for juvenile Lophiosilurus alexandri, with concentrations between 50 and 300 mg L-1 producing ideal induction and recovery times, reducing ventilatory frequency, and preventing an increase in plasma glucose levels.
Article
Biochemistry & Molecular Biology
Livia de Assis Porto, Rafael Magno Costa Melo, Suzane Lilian Beier, Ronald Kennedy Luz, Gisele Cristina Favero
Summary: The study revealed that Lophiosilurus alexandri juveniles adapted well to hypoxia conditions for 48 hours, adjusting their physiological variables to survive the stress. After 48 hours of recovery, fish showed parameters similar to those in normoxia, indicating their potential for production among regional species.
FISH PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Fisheries
Jose Carlos de Oliveira-Junior, Gustavo Augusto Carvalho Costacurta de Aguiar, Cristiana Leonor da Silva Carneiro, Andre Luis Fialho Ladeira, Daniel Abreu Vasconcelos Campelo, Wilson Massamitu Furuya, Fabio Aremil Costa Dos Santos, Jener Alexandre Sampaio Zuanon, Ronald Kennedy Luz, Ana Lucia Salaro
Summary: The research evaluated the effects of different ratios of crude protein/non-fibrous carbohydrates (CP/NFC) on juvenile Lophiosilurus alexandri. Diets within CP/NFC ratios of 1.11-1.33 were found to improve fish productivity and nutrient utilization efficiency. The study also showed that different CP/NFC ratios affected plasma and metabolic variables, indicating a better physiological state in the juvenile fish.
Article
Fisheries
Andre Luis Fialho Ladeira, Rafael Costa Teixeira Rusth, Cristiana Leonor da Silva Carneiro, Daniel Abreu Vasconcelos Campelo, Vitor Hugo Penariol Morante, Ronald Kennedy Luz, Antonio Policarpo Souza Carneiro, Ana Lucia Salaro
Summary: The study aimed to evaluate monosodium glutamate (MSG) dietary supplementation during pacama (Lophiosilurus alexandri) feed training through growth performance and intestinal histomorphometry. Although MSG did not affect growth performance and feed training efficiency, fish trained with diets supplemented with high levels of MSG showed an increase in the number of goblet cells in the anterior portion of the intestine.
AQUACULTURE RESEARCH
(2021)
Article
Multidisciplinary Sciences
Daniel P. Da Costa, Marcio Jose S. Silva, Ricardo Marcelo Geraldi, Joao Paulo Lorenzini, Cristiano C. Mattioli, Afonso De Liguori Oliveira, Ronald K. Luz, Kleber Campos Miranda-Filho
Summary: The study aimed to test the retention capacity of carotenoids in tissues of Lophiosilurus alexandri juveniles fed diets containing different levels of synthetic astaxanthin. Results showed that the inclusion of astaxanthin did not significantly impact the growth and feed efficiency of the fish. Interestingly, the highest levels of carotenoids in blood and muscle were observed at the 100 mg/kg inclusion level.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Fisheries
Lucas Pedro Goncalves Junior, Deliane Cristina Costa, Rodrigo Takata, Ronald Kennedy Luz
Summary: The objective of this study was to investigate the impact of temperature on food intake and digestion time in larvae of Lophiosilurus alexandri. The results showed that the effect of temperature on intake and digestion was more pronounced at 18 and 23 days post-hatching (DPH). As the age and temperature increased, the time to reach the highest digestion rate decreased.
JOURNAL OF APPLIED AQUACULTURE
(2022)
Article
Plant Sciences
Fernanda Dotti do Prado, Andrea Abrigato de Freitas Mourao, Fausto Foresti, Jose Augusto Senhorini, Fabio Porto-Foresti
Summary: This study reports the cytogenetic characterization of an Amazonian catfish Leiarius marmoratus and its hybrid with Pseudoplatystoma reticulatum, showing differences in karyotype formula and size of chromosome pair with nucleolus organizer region (Ag-NOR). The hybrid displayed an intermediate karyotype compared to parental species, with Ag-NOR serving as a chromosome marker for differentiation. Insights into chromosomal features of L. marmoratus and novel cytogenetic information within the Pimelodidae family were also provided.
Article
Fisheries
Pamela Thainara do Nascimento Veiga, Tatiane Auxiliadora Ribeiro Rodrigues, Leticia Fantini-Hoag, Robson Andrade Rodrigues, Fabiana Pilarski, Marco Shizuo Owatari, Mauricio Laterca Martins, Cristiane Meldau de Campos
Summary: The aim of the study was to evaluate the effects of inulin on stress and innate immunity of hybrid catfish. The fish were given inulin at four inclusion levels for 31 days. The results showed that inulin supplementation at 0.50% improved the immune system of the hybrid catfish.
AQUACULTURE INTERNATIONAL
(2023)
Article
Fisheries
Geovanna Carla Zacheo Coelho, Raphael da Silva Costa, Fabio Porto-Foresti, Rosicleire Verissimo-Silveira, Alexandre Ninhaus-Silveira
Summary: Ontogenetic studies of fish eggs and larvae provide valuable information for the initial life history and biology of a species, taxonomic and evolutionary studies, and cultivation in captivity. This study analyzed morphological differences in larval ontogeny of three species and their hybrid, identifying characteristics that distinguish them at different developmental stages, with hybrids showing similarities to one parent but differences from the other in later stages.
JOURNAL OF APPLIED ICHTHYOLOGY
(2021)
Article
Fisheries
Lucas Pedro Goncalves Junior, Angelica da Silva Ferreira, Isabela F. Araujo Torres, Walisson de Souza E. Silva, Leandro Santos Costa, Jose F. Lopez-Olmeda, Natalia C. S. Costa, Paula A. P. Ribeiro, Deliane Cristina Costa, Ronald Kennedy Luz
Summary: This study aimed to evaluate the effects of different feeding frequencies on the performance, hematology profile, daily rhythms of glucose, and activities of digestive enzymes in juvenile Lophiosilurus alexandri. The results showed that feeding frequency did not significantly affect survival, weight, or weight gain. However, it did influence hematology profile, daily rhythms of glucose, and activities of digestive enzymes. Juvenile L. alexandri can be successfully produced with a feeding frequency of twice a day.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Fisheries
Camila Oliveira Paranhos, Luanna do Carmo Neves, Walisson Souza e Silva, Ronald Kennedy Luz
Summary: The aim of this study was to evaluate the survival and water quality of Hypsolebias flagellatus during transportation with different salt concentrations, transport times, and previous diets. The results showed that the concentration of 4 g salt/L had the highest dissolved oxygen, and the survival rate was lower after 48 hours of transportation. Meanwhile, the type of diet also had an influence on water quality and dissolved oxygen.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Biotechnology & Applied Microbiology
Quesia S. Damaceno, Bruno Gallotti, Isabela M. M. Reis, Yasmim C. P. Totte, Gabriella B. Assis, Henrique C. Figueiredo, Tales F. Silva, Vasco Azevedo, Jacques R. Nicoli, Flaviano S. Martins
Summary: Breast milk contains beneficial bacteria that can positively influence the health of newborns. The study identified 77 bacteria belonging to four genera, including Staphylococcus, Streptococcus, Leuconostoc, and Lacticaseibacillus. Two potential probiotics, Lacticaseibacillus rhamnosus and Leuconostoc mesenteroides, were selected and found to colonize the gastrointestinal tract in germ-free mice and maintain viability after spray-drying.
PROBIOTICS AND ANTIMICROBIAL PROTEINS
(2023)
Article
Fisheries
Filipe dos Santos Cipriano, Ronald Kennedy Luz, Joao Paulo Silva Lorenzini, Cintia Labussiere Nakayama, Luanna do Carmo Neves, Lucas Pedro Goncalves-Junior, Kauana Santos de Lima, Franklin Fernando Batista da Costa, Kleber Campos Miranda-Filho
Summary: This study evaluated the tolerance and performance of Poecilia velifera in different salinities and found that the species has a wide range of salinity tolerance, with the best growth performance in freshwater conditions.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Fisheries
Renata Catao Egger, Julio Cesar Camara Rosa, Luis Fernando Lara Resende, Santiago Benites de Padua, Fernanda de Oliveira Barbosa, Mariana Taise Zerbini, Guilherme Campos Tavares, Henrique Cesar Pereira Figueiredo
Summary: This study investigated lactococcosis outbreaks in Nile tilapia on Brazilian farms and characterized the isolates through multilocus sequence typing (MLST), virulence to Nile tilapia, and antimicrobial susceptibility. The pathogenicity of L. petauri to Nile tilapia was confirmed, and its rapid expansion was observed. Provisional epidemiological cutoff values were determined for L. petauri for six antimicrobial agents from different drug classes.
Article
Fisheries
Fabio Aremil Costa dos Santos, Leandro Santos Costa, Helder de Oliveira Guilherme, Pedro Gomes Gamarano, Jose Fernando Lopez-Olmeda, Veronica Guimaraes Landa Prado, Debora de Almeida Freitas, Luiz Felipe da Silveira Silva, Ronald Kennedy Luz, Paula Adriane Perez Ribeiro
Summary: This study evaluated the growth and blood biochemistry of juvenile Lophiosilurus alexandri self-feeding on feeds with different protein-to-energy ratios. The results showed that diets with a protein-to-energy ratio close to 23.91 g protein/MJ provided better adaptation and growth rates, as well as positive effects on blood biochemistry.
AQUACULTURE INTERNATIONAL
(2023)
Correction
Microbiology
Felipe Luiz Pereira, Fernanda Alves Dorella, Jesica Castrejon-Najera, Francisco Yan Tavares Reis, Cesar Ortega, Rute Irgang, Macarena Echeverria-Bugueno, Ruben Avendano-Herrera, Henrique Cesar Pereira Figueiredo
BRAZILIAN JOURNAL OF MICROBIOLOGY
(2023)
Review
Multidisciplinary Sciences
Joyce Dutra, Rosimeire Gomes, Glen Jasper Yupanqui Garcia, Danitza Xiomara Romero-Cale, Mariana Santos Cardoso, Vinicius Waldow, Claudia Groposo, Rubens N. Akamine, Maira Sousa, Henrique Figueiredo, Vasco Azevedo, Aristoteles Goes-Neto
Summary: This systematic review evaluates the taxonomic composition and relative abundance of microorganisms associated with microbiologically influenced corrosion (MIC) in the oil and gas industry. The results indicate the presence of functional groups involved in MIC processes and the influence of environmental and human factors on microbial activity and metabolic patterns. The findings provide valuable insights for the development of standardized approaches to control MIC in oil and gas production and transport structures.
Article
Microbiology
Gabriela Muniz Carvalho, Brendhal Almeida Silva, Rafael Gariglio Clark Xavier, Isabela Padua Zanon, Eduardo Garcia Vilela, Rafael Romero Nicolino, Guilherme Campos Tavares, Rodrigo Otavio Silveira Silva
Summary: Antimicrobial resistance is a significant threat to animal and public health, and Clostridioides difficile is a major burden to healthcare and an important reservoir of antimicrobial resistance genes. This study investigated the susceptibility of C. difficile to erythromycin, rifampicin, and tetracycline using the disk diffusion method. The results suggest that disk diffusion can be a useful tool for identifying resistant C. difficile isolates, but it may not be suitable for tetracycline due to misclassification of resistant strains.
Article
Marine & Freshwater Biology
Isabela Fernanda Araujo Torres, Camila Oliveira Paranhos, Caroline Teixeira Bonifacio, Gisele Cristina Favero, Ronald Kennedy Luz
Summary: The aim of this study was to evaluate the reproductive aspects of Nile tilapia classified by personality traits. It was found that breeders of the same personality traits spawned more frequently, with the highest amount of spawning for BFBM and the lowest for BFSM. Total and relative fecundity were higher for SF, while egg weight, volume of yolk sac, and percentage of newly hatched larvae were higher for BF. Only the Curvilinear Velocity and Straight-line Velocity in males were influenced by personality traits. The offspring of BF showed greater resistance to the stress test.
MARINE AND FRESHWATER BEHAVIOUR AND PHYSIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Andre Lima Ferreira, Fabio Aremil Costa dos Santos, Caroline Teixeira Bonifacio, Ronald Kennedy Luz
Summary: This study examined the effects of live prey concentration, water salinity, and weaning age on the survival, growth, and stress resistance of Piaractus brachypomus in a recirculating aquaculture system. The results showed that sudden transition from live food to commercial food after 10 days of larviculture resulted in the lowest growth rate, while a salinity of 2 g of salt per liter and an initial prey concentration of 700 nauplii per larva led to the best growth. Integrating these three management strategies maximizes the survival, growth, and stress resistance of P. brachypomus in RAS.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Fisheries
Jaqueline Simoes Saliba, Fabio Aremil Costa dos Santos, Eloisa de Oliveira Simoes Saliba, Ronald Kennedy Luz
Summary: This study aimed to develop a methodology for marking Artemia with different markers and evaluating their passage rate and digestibility in Lophiosilurus alexandri larvae of different ages. Titanium dioxide had a higher concentration in Artemia than the other markers, and the passage rate did not significantly differ between titanium and NANOLIPE((R)). The apparent digestibility of the protein in Artemia nauplii was 95.08%, indicating Artemia as a good quality food for L. alexandri larvae.
Article
Agriculture, Dairy & Animal Science
Francisco Yan Tavares Reis, Victoria Pontes Rocha, Peter Charrie Janampa-Sarmiento, Henrique Lopes Costa, Renata Catao Egger, Naisa Cristine Passos, Carlos Henrique Santos de Assis, Sarah Portes Carneiro, Agna Ferreira Santos, Brendhal Almeida Silva, Fernanda Alves Dorella, Marcia Pimenta Leibowitz, Ronald Kennedy Luz, Felipe Pierezan, Silvia Umeda Gallani, Guilherme Campos Tavares, Henrique Cesar Pereira Figueiredo
Summary: This study assessed the antimicrobial susceptibility, pathogenicity, and genetic diversity of E. tarda isolates from tambaqui fish in Brazil. The results showed that the isolates had different antimicrobial susceptibility patterns, with some showing wild-type resistance to certain drugs. Experimental infection also revealed pathogenic effects in the fish. These findings highlight the potential impact of E. tarda on tambaqui aquaculture in the future.
Article
Agronomy
Andre Lima Ferreira, Andre de Sena Souza, Fabio Aremil Costa dos Santos, Carlos Garrido Pinheiro, Gisele Cristina Favero, Berta Maria Heinzmann, Bernardo Baldisserotto, Ronald Kennedy Luz
Summary: This study assessed the effectiveness of EOHR for anesthesia in C. macropomum by observing hematological and blood biochemical responses. Juveniles were exposed to different concentrations of EOHR and the induction and recovery times, as well as the effects on VF, were recorded. The results showed that a concentration of 150 mu L L-1 EOHR had minimal influence on the hematological and biochemical parameters of the fish.