Article
Microbiology
David Huyben, Maureen Jarau, Janet MacInnes, Roselynn Stevenson, John Lumsden
Summary: The diversity and composition of intestinal microbiota in rainbow trout were analyzed using next-generation sequencing (NGS). The study found that prophylactic oral treatment with antibiotics and infection with Flavobacterium psychrophilum altered the composition of intestinal microbiota in rainbow trout, and this alteration persisted for at least 24 days after infection.
Article
Immunology
Furong Deng, Di Wang, Thomas P. Loch, Fuguang Chen, Tongyan Lu, Yongsheng Cao, Dan Fan, Shaowu Li
Summary: This study utilized RNA-seq analysis to investigate the molecular mechanism of immune response in rainbow trout spleen during Flavobacterium psychrophilum infection. The results revealed key signaling pathways and provided valuable insights for future research on prevention and control of bacterial coldwater disease in salmon culture.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Fisheries
Yiwen Wu, Xiaopeng You, Weiqing Sun, Guangquan Xiong, Liu Shi, Yu Qiao, Wenjing Wu, Xin Li, Jun Wang, Anzi Ding, Lan Wang
Summary: The study found that acute heat stress during short-time transportation of rainbow trout can lead to changes in meat qualities, as well as a decrease in antioxidative enzymes and energy substances of metabolism. Adding ascorbic acid can help alleviate the negative effects of acute heat stress.
Article
Environmental Sciences
Gilles Tinant, Ineke Neefs, Krishna Das, Jean-Francois Rees, Yvan Larondelle, Cathy Debier
Summary: The study found that MeHg affects lipid metabolism in rainbow trout adipocytes, leading to intracellular accumulation of neutral lipids and up-regulation of adipocyte-specific and lipid-related genes.
Article
Fisheries
Lianqun Sun, Carole R. Engle, Ganesh Kumar, Jonathan van Senten
Summary: This study examines the retail sales of farm-raised trout in the United States from 2016 to 2021. The results show that sales increased steadily during this period, with the fastest growth observed in the West North Central region. The top market regions for trout sales were Seattle/Tacoma and Portland Oregon.
AQUACULTURE REPORTS
(2023)
Article
Fisheries
Peter A. Biro, John R. Post, Christa Beckmann
Summary: Accumulation of lipid reserves is crucial for the overwinter survival of animals, with fish in productive lakes having higher lipid content and steeper allometric slopes, leading to higher survival rates during winter. This suggests that overwinter mortality exerts a stronger selective pressure on fish populations than previously thought.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2021)
Article
Fisheries
Betty San Martin, Marcela Fresno, Aldo Maddaleno, Jose Miguel Burgos, Arturo Anadon, Sebastian Zavala, Lisette Lapierre, Ekaterina Pokrant, Javiera Cornejo
Summary: This research aimed to estimate the withdrawal time for oxytetracycline in rainbow trout and Atlantic salmon after intraperitoneal administration. The study found that most samples met the market standards with a maximum residue limit of 200 μg/kg, but not with a limit of 10 μg/kg, and withdrawal times varied depending on the standard and species.
Article
Engineering, Environmental
Amelie Kierkegaard, Marcus Sundbom, Bo Yuan, James M. Armitage, Jon A. Arnot, Steven T. J. Droge, Michael S. McLachlan
Summary: For alkylamines, the bioconcentration increases with chain length (<= C-14) and is influenced by pH value in water. In contrast, quaternary ammonium compounds show minimal pH dependence and have lower bioconcentration levels compared to alkylamines of the same chain length at pH 7.6.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Fisheries
Rebecca A. Dupre, Ryan Ardoin, Jesse Trushenski, Chris Jackson, Casey Grimm, Brennan Smith
Summary: The present research demonstrates that dietary exposure is an alternative route of geosmin uptake in Rainbow Trout fillets, leading to a significant increase in geosmin concentrations. This finding is important for further investigation of sensory quality and off-flavor mitigation strategies for farm-raised fish.
Article
Veterinary Sciences
Orhan Corum, Kamil Uney, Ertugrul Terzi, Duygu Durna Corum, Devran Coskun, Feray Altan, Muammer Elmas
Summary: This study compared the pharmacokinetics, tissue residues, and withdrawal times of doxycycline after oral administration in rainbow trout reared at different temperatures. The results showed that temperature significantly affected the metabolism, excretion, tissue residues, and withdrawal times of doxycycline in rainbow trout, suggesting the need for temperature-dependent dosing regimens and withdrawal times.
VETERINARY SCIENCES
(2023)
Article
Fisheries
Emmanuelle Moreau, Lionel Pineau, Florine Bachelet, Antoine Rostang, Kenny Oberle, Segolene Calvez
Summary: This study aimed to develop a method of infectious challenge in large Rainbow trout by immersion, simulating natural infection conditions. The results showed that a 24-hour contact period led to infection in all fish with a mortality rate of 53.25%. The infected fish developed acute infection symptoms and lesions similar to furunculosis, and antibodies against the bacterium were produced 4 weeks after challenging compared to the non-challenged group.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Environmental Sciences
Parastoo Razmara, Jacob J. Imbery, Emily Koide, Caren C. Helbing, Steve B. Wiseman, Patrick T. Gauthier, Douglas F. Bray, Maurice Needham, Travis Haight, Athanasios Zovoilis, Gregory G. Pyle
Summary: The study found that CuNPs are bioavailable to olfactory mucosal cells and have different effects on rainbow trout compared to Cu2+. RNA-seq analysis revealed distinct mechanisms of action between the two contaminants, with CuNPs affecting olfactory signal transduction, calcium homeostasis, and synaptic vesicular signaling in OSNs. CuNPs also impacted neuroregenerative pathways and suppressed inflammatory signaling, without inducing oxidative stress or apoptosis.
ENVIRONMENTAL POLLUTION
(2021)
Article
Biochemistry & Molecular Biology
Hanying Xu, Ce Shi, Yangfang Ye, Changbin Song, Changkao Mu, Chunlin Wang
Summary: Artificial night light can disrupt circadian rhythm and lipid metabolism, while time-restricted feeding helps maintain metabolic homeostasis. This study found that continuous light exposure led to lipid accumulation and decreased levels of long-chain polyunsaturated fatty acids in juvenile rainbow trout. However, time-restricted feeding failed to alleviate these negative effects.
Article
Fisheries
Yiwen Wu, Manman Zhao, Guangquan Xiong, Weiqing Sun, Wenjin Wu, Anzi Ding, Sheng Chen, Lan Wang, Liu Shi
Summary: The study investigated the impacts of hypoxia during short-time transportation on the muscle quality of rainbow trout and its relief attempt by reoxygenation. The results showed that severe hypoxic trout exhibited lower shearing force, saturated fatty acid content, and delicious amino acids, and higher expressible moisture, Metmyoglobin, and essential amino acids content compared to the sample without hypoxia. Reoxygenation for 24 h effectively relieved the quality deterioration of rainbow trout fillets induced by hypoxia.
Article
Fisheries
Felix Docando, Paula Arense, Alba Martin-Martin, Tiehui Wang, Carolina Tafalla, Patricia Diaz-Rosales
Summary: Disease prevention through vaccination is the most appropriate method for pathogen control in aquaculture, but oral vaccines face technical problems in aquatic animals. This study explores different molecules as oral adjuvants and finds that LPS shows strong immunostimulatory potential and could be safely used as a mucosal adjuvant in rainbow trout.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Ecology
Carlos Omar Lomeli-Ortega, Diana R. Barajas-Sandoval, Juan Manuel Martinez-Villalobos, Carmen Rodriguez Jaramillo, Eulalia Meza Chavez, Bruno Gomez-Gil, Jose L. Balcazar, Eduardo Quiroz-Guzman
Summary: This study tested the protective effects of a phage cocktail composed of vB_Vc_SrVc2 and vB_Vc_SrVc9 in shrimp aquaculture. The results showed that the phage cocktail effectively reduced Vibrio species and led to positive changes in shrimp postlarvae.
Article
Fisheries
Miray Etyemez Buyukdeveci, Ibrahim Cengizler, Jose L. Balcazar, Ibrahim Demirkale
Summary: Feeding two strains of Bacillus bacteria has positive effects on the growth performance, intestinal morphology, immunity, and disease resistance in Nile tilapia.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2023)
Review
Microbiology
Mingming Sun, Shujian Yuan, Rong Xia, Mao Ye, Jose Luis Balcazar
Summary: Bacterial viruses are abundant in soil ecosystems, and recent advancements in metagenomics and viromics have identified a diverse range of virus-encoded auxiliary metabolic genes (AMGs) in soils. These AMGs play important roles in transforming carbon, phosphorus, and sulfur, degrading organic pollutants, and resisting antibiotics. Viral AMGs can influence soil biogeochemical processes by interfering with bacterial host metabolism, and they contribute to the adaptation of bacterial hosts in stressed soil environments. This mini-review summarizes the diversity and function of virus-encoded AMGs in the soil environment, with a focus on the evolutionary significance of AMGs involved in virus-host interactions. It also highlights the current gaps and future perspectives for research on viral AMGs in soils.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Veterinary Sciences
Elena Barrio Fernandez, Ignacio de Blas Giral, Gemma Lilly, Joao B. Rodrigues, Francisco Jose Vazquez Bringas
Summary: A high prevalence and severity of dental disease in donkeys in the UK was observed, with limited attention given to the relationship between dental health and management and health care. Recommendations are needed to improve practices for better donkey welfare.
EQUINE VETERINARY EDUCATION
(2023)
Article
Environmental Sciences
Meritxell Gros, Josep Mas-Pla, Alexandre Sanchez-Melsio, Mira Celic, Marc Castano, Sara Rodriguez-Mozaz, Carles M. Borrego, Jose Luis Balcazar, Mira Petrovic
Summary: This study investigates the occurrence, transport, and risks associated with antibiotic residues, antibiotic resistance genes, and antibiotic resistant Escherichia coli in natural springs in an agroecosystem environment. The results show that tetracycline and sulfonamide residues are the most commonly found, and genes conferring resistance to sulfonamides and tetracyclines are present in most springs. Antibiotic resistant E. coli is also detected, but with poor correlations to the concentrations of antibiotic residues and genes. The occurrence of antibiotics, genes, and bacteria is influenced by seasonal variations, hydrological factors, and reactive transport processes. The risk assessment suggests a low risk for both groundwater environment and human health when spring water is used for direct consumption.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Veterinary Sciences
Arantza Vitoria, Antonio Romero, Laura Barrachina, Sara Fuente, Lydia Gil, Ignacio de Blas, Francisco Jose Vazquez Bringas
Summary: A new laparoscopic inguinal hernioplasty technique using a surgical anchoring system was described in this study. The technique involved anchoring a polyether ether ketone harpoon in the craniolateral aspect of the vaginal ring and using an extracorporeal knot to fix the device. The procedure was performed successfully in all horses without any other complications.
Article
Biotechnology & Applied Microbiology
Shujian Yuan, Ville-Petri Friman, Jose Luis Balcazar, Xiaoxuan Zheng, Mao Ye, Mingming Sun, Feng Hu
Summary: This study investigated the assembly processes of bacterial and viral communities in clean and OCP-contaminated soils in China. The results showed that assembly of bacterial taxa and genes was dominated by a deterministic process, while assembly of viral taxa and AMGs was driven by a stochastic process. Additionally, viruses showed promise for the dissemination of functional genes among bacterial communities in OCP-contaminated soil.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Environmental Sciences
Victoria Osorio, Arnau Sabater i Mezquita, Jose Luis Balcazar
Summary: Antibiotic misuse in livestock poses a significant threat to human health due to the development of antibiotic resistance in bacteria. Through comparative analysis of faecal metagenomes from swine, poultry, cattle, and humans, we found that poultry manure had a higher prevalence of antibiotic resistance genes compared to other species. Clinically relevant resistance genes, including mcr-1 and blaCTX-M, were detected across all species. Poultry manure was identified as a hotspot for multidrug resistance, highlighting the urgent need for action in the livestock industry to combat antibiotic resistance.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Oriol Casabella-Font, Soraya Zahedi, Jose Luis Balcazar, Jelena Radjenovic, Maite Pijuan
Summary: The impact of graphene oxide on the anaerobic digestion of waste activated sludge was examined using biochemical methane potential tests at two different concentrations. Graphene oxide addition enhanced the removal of various pharmaceuticals, including those that are biological degradation persistent. However, high concentrations of graphene oxide partially inhibited methane production. The relative abundance of antibiotic resistance genes was unaffected, but there were significant changes in the microbial community.
ENVIRONMENTAL POLLUTION
(2023)
Article
Ecology
Rong Xia, Mingming Sun, Jose Luis Balcazar, Pingfeng Yu, Feng Hu, Pedro J. J. Alvarez
Summary: This study investigated the interactions between earthworm intestinal phages and their bacteria under different benzo[a]pyrene (BaP) concentrations using metagenomics and metatranscriptomics. The results showed that low-level BaP stress stimulated microbial metabolism and enhanced the antiphage defense system, while high-level BaP exposure disrupted microbial metabolism and suppressed the antiphage systems. Overall, these findings expand our knowledge of complex phage-bacterium interactions in pollution-stressed worm guts and deepen our understanding of the ecological and evolutionary roles of phages.
Article
Fisheries
Enrique Estrada-San Agustin, Jorge Hernandez-Lopez, Ignacio De Blas, Hector Sumano
Summary: A field survey was conducted in the State of Sonora, Mexico, which is the second largest producer of shrimp, to determine the use of antibiotic drugs. The survey revealed that in 2020, the most commonly treated bacterial diseases with antibiotics were Acute Hepatopancreatic Necrosis Disease (65%), vibriosis (51%), and Necrotizing hepatopancreatitis bacterium (41%). The selection of antibiotics was mainly based on direct recommendations and market price, without considering pharmacokinetics, pharmacodynamics, and withdrawal time. The region lacks protocols to protect the health and integrity of workers, training programs for responsible antibiotic use, and data on bacterial resistance to antibiotics.
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
(2023)
Article
Parasitology
Natalia Fernandez-Ruiz, Sophia Pinecki-Socias, Agustin Estrada-Pena, Alejandra Wu-Chuang, Apolline Maitre, Dasiel Obregon, Alejandro Cabezas-Cruz, Ignacio de Blas, Ard M. Nijhof
Summary: Studies on tick microbiota have raised hypotheses about the impact of bacterial community on tick physiology and competition with tick-borne pathogens. However, little is known about the origin of microbiota in newly hatched tick larvae. This study aimed to identify the source(s) of microbiota in unfed tick larvae and determine effective methods for decontaminating tick eggs for microbiota studies. The results showed that bleach washes disrupted the tick's internal microbiota and the ovary was identified as a main source of tick microbiota.
PARASITES & VECTORS
(2023)
Article
Agriculture, Dairy & Animal Science
Rose Chinly Mae H. Ortega, Sharon Rose M. Tabugo, Joey Genevieve T. Martinez, Chinee S. Padasas, Jose L. Balcazar
Summary: This study assessed the bacterial community structure in the skin of Barbour's seahorses, with a focus on the Aeromonadaceae family. The presence of Aeromonas genus in the seahorses' skin and its relationship with the surrounding sediment were analyzed. The findings provide baseline information for future research on the role of Aeromonas species in seahorse microbiota and health. Importance rating: 7 out of 10.
Article
Biodiversity Conservation
Ignacio Ruiz-Arrondo, Pedro Maria Alarcon-Elbal, Laura Blanco-Sierra, Sarah Delacour-Estrella, Ignacio de Blas, Jose A. Oteo
Summary: To better understand the transmission cycles of mosquito-borne diseases, an entomological survey was conducted in peri-urban areas in northern Spain. The study found that the abundance and composition of mosquitoes varied across different aquatic ecosystems, with hydrological management practices playing a key role. The overall risk of mosquito bites in the study area is expected to be relatively low.
Article
Veterinary Sciences
Francisco Jose Vazquez, Arantza Vitoria, Javier Gomez-Arrue, Sara Fuente, Laura Barrachina, Ignacio de Blas, Antonio Romero
Summary: The study aims to compare the efficacy and associated complications of using human laparoscopy devices for laparoscopic access in standing horses and analyze the influence of body condition on complications. The results show that human-designed laparoscopy devices can be used for laparoscopic access in standing horses, but high body condition may increase the risk of complications. The use of optical devices, especially the optical helical cannula, can minimize the occurrence of complications, especially for overweight horses.
VETERINARY SCIENCES
(2023)
