Article
Multidisciplinary Sciences
Damien E. Barrett, Jerri L. Bartholomew
Summary: Research has shown that resistant fish quickly contain the infection and recognize the parasite invading the intestine, while susceptible fish exhibit a delayed immune response to the parasite. Susceptible fish show no discernible immune response in terms of differential gene expression, and in the later stages of infection they exhibit a vigorous yet ineffective immune response.
Article
Multidisciplinary Sciences
Kristen Homel, Julie D. Alexander
Summary: Anthropogenic activities in the Columbia River Basin have negatively affected the habitat and population of salmon species, with the presence of the parasite C. shasta potentially limiting the recovery of chum salmon.
Article
Genetics & Heredity
Dean Porter, Shahmir Naseer, David Peggs, Charles McGurk, Samuel Allen Moore Martin
Summary: Beta-glucans are commonly used in aquaculture to boost fish immune status, but their immunostimulatory mechanism is not fully understood. This study stimulated trout spleen macrophage-like cells with beta-1,3/1,6-glucans to analyze their immunomodulatory properties. The results showed enrichment of proinflammatory pathways and pathways related to bacterial responses, confirming the immunomodulatory effects of beta-glucan supplementation. This study validates the use of cell lines as predictive models for interpreting dietary interventions.
Article
Environmental Sciences
Jason T. Magnuson, Kara E. Huff Hartz, Corie A. Fulton, Michael J. Lydy, Daniel Schlenk
Summary: The neurotoxic effects of bifenthrin on rainbow trout mainly involve disrupting neuroendocrine function, affecting cell signaling pathways, and inducing apoptosis. Research findings suggest that low concentrations of bifenthrin can have significant impacts on endangered fish species.
Review
Oceanography
Samantha M. Wilson, Thomas W. Buehrens, Jennifer L. Fisher, Kyle L. Wilson, Jonathan W. Moore
Summary: This study examined the relationship between juvenile steelhead trout migration timing and ocean survival, highlighting the importance of body size, river exit date, and the biological spring transition date in influencing individual survival. Fish with larger body size during migration had higher ocean survival rates, while phenological mismatches could result in lower marine survival.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Fisheries
Manjusri P. A. Wijekoon, Christopher C. Parrish, Daria Gallardi, Kaushik Nag, Atef Mansour
Summary: This study evaluated the effects of diet and temperature on liver membranes in steelhead trout, finding that fish fed H-n3 diet showed the best adaptability to temperature changes, while those fed L-n3 diet had increased membrane fluidity. Changes in sterol:phospholipid ratios were identified as key responses for membrane adaptability to environmental changes.
AQUACULTURE NUTRITION
(2021)
Article
Veterinary Sciences
Aimee N. N. Reed, Freya E. E. Rowland, Jennifer A. A. Krajcik, Donald E. E. Tillitt
Summary: Steelhead fry reared in Oregon hatcheries have a high mortality rate and show signs of vitamin B1 deficiency. This study explores whether thiamine supplementation can improve their health and survival. The results demonstrate that thiamine-treated fry had significantly higher survival and growth rates compared to those without thiamine supplementation.
VETERINARY SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Bernat Morro, Richard Broughton, Pablo Balseiro, Sigurd O. Handeland, Simon Mackenzie, Mary K. Doherty, Phillip D. Whitfield, Munetaka Shimizu, Marnix Gorissen, Harald Sveier, Amaya Albalat
Summary: The study found that growth stunting in seawater-transferred rainbow trout is mainly caused by a significant downregulation in plasma IGF-I and liver igf1 transcription, while changes in the liver proteome suggest reactive-oxygen-species-mediated endoplasmic reticulum stress as a key mechanism underlying the phenotype. Lipidomic analysis revealed a reduction in triacylglycerols and elevated amounts of cardiolipins, a characteristic lipid class associated with oxidative stress, in the growth stunting phenotype.
Article
Environmental Sciences
Zhen Ma, Jia Zhang, Xu Zhang, Haixia Li, Ying Liu, Lei Gao
Summary: Light and temperature are necessary for migratory fish, and assessing fish physiology and behavior is crucial for fish welfare and the optimal setting of aquaculture systems. This study explores the interactive effect of photoperiod and temperature on steelhead trout culture, providing important insights for effective aquaculture systems.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Marc A. Johnson, Thomas A. Friesen, Donald M. VanDoornik, David J. Teel, James M. Myers
Summary: The native winter steelhead from Oregon's Upper Willamette River are facing extinction due to habitat loss, predation, and pollution, as well as genetic and ecological risks from non-native hatchery programs. Genetic analysis revealed significant genetic influence from discontinued hatchery programs on naturally-produced steelhead populations, and it is crucial to consider this genetic integrity for conservation efforts.
CONSERVATION GENETICS
(2021)
Article
Fisheries
Lu Zhao, Jinqiang Huang, Yongjuan Li, Shenji Wu, Yujun Kang
Summary: Rainbow trout is an economically important fish cultivated worldwide, but the outbreak of infectious hematopoietic necrosis virus (IHNV) hampers its farming industry and causes economic losses. This study identified numerous immune-related genes in the skin of rainbow trout infected with IHNV, providing insights into the innate immune system and laying a foundation for further research on disease resistance breeding.
AQUACULTURE INTERNATIONAL
(2023)
Article
Ecology
Kathleen S. Cole, David L. G. Noakes, Neil Thompson, Michael Blouin, Bruce Morrison, Ryan B. Couture, Joseph O'Neil, Carl B. Schreck
Summary: The study evaluated how genotype and temperature interact to influence gonad development and phenotypic sex of Oncorhynchus mykiss, showing that elevated rearing temperatures did not result in sex change. Approximately 10% of the histologically examined fish showed no evidence of gonad development beyond the indifferent stage, most of which were from hatchery family lines.
ENVIRONMENTAL BIOLOGY OF FISHES
(2021)
Article
Environmental Sciences
Xueweijie Chen, Yangen Zhou, Jinze Huang, Dong An, Li Li, Yunwei Dong, Qinfeng Gao, Shuanglin Dong
Summary: This study investigated the response of juvenile steelhead trout under different light color conditions. The results showed that trout exposed to the 3B9R light environment exhibited improved digestive and anabolic performance, while trout exposed to the 6B6R light environment showed weakened performance. Additionally, the 12R light environment might cause oxidative stress. Therefore, the 3B9R light condition is considered optimal for improving the performance of steelhead trout.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Shisheng Ma, Li Li, Xiaoqun Chen, Shujing Chen, Yunwei Dong, Qinfeng Gao, Yangen Zhou, Shuanglin Dong
Summary: The study aimed to investigate the effects of different rhythmic light spectra and intensities on the growth and physiological parameters of juvenile steelhead trout. The results showed that the blue-purple-red light treatment promoted feed intake, body weight, and growth rate, and had positive effects on physiological indicators such as insulin-like growth factor 1 and thyroxine.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
Jianfei Yu, Li Li, Yunwei Dong, Qinfeng Gao, Yangen Zhou, Shuanglin Dong
Summary: This study investigated the effects of dietary lipids on the growth and lipid deposition of steelhead trout through underwater confinement using different equipment. The results showed that increasing the dietary lipid levels significantly improved the growth and lipid content of the trout.
AQUACULTURE REPORTS
(2023)
Article
Environmental Sciences
Paula Sole-Jimenez, Fernando Naya-Catala, M. Carla Piazzon, Itziar Estensoro, Josep A. Calduch-Giner, Ariadna Sitja-Bobadilla, Danny Van Mullem, Jaume Perez-Sanchez
Summary: The study investigated the effects of partially and fully replacing fish meal with a commercial protein source on farmed gilthead sea bream juveniles. Partial replacement had minimal impact on growth performance, while total replacement resulted in slight growth impairment and intestinal inflammation. The microbiota diversity was higher in fish with full replacement, suggesting a potential anti-inflammatory response from specific bacterial strains. The findings also indicated an over-representation of mucosal microbes involved in the production of antimicrobials in experimental diet-fed fish.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Fisheries
Inmaculada Varo, Katherinne Osorio, Itziar Estensoro, Fernando Naya-Catala, Ariadna Sitja-Bobadilla, Juan Carlos Navarro, Jaume Perez-Sanchez, Amparo Torreblanca, M. Carla Piazzon
Summary: This study investigated the effects of LDPE microplastic ingestion on the intestinal health and microbiota of gilthead sea bream. Results showed that microplastic ingestion could cause intestinal inflammation, tissue damage, and slight changes in microbial composition. Implications of prolonged microplastic ingestion on growth problems and dysbiosis were also discussed based on the observed alterations.
Article
Microbiology
Fernando Naya-Catala, M. Carla Piazzon, Josep A. Calduch-Giner, Ariadna Sitja-Bobadilla, Jaume Perez-Sanchez
Summary: The present study used a metatranscriptomic approach to investigate the expression of gut microbial genes in farmed gilthead sea bream. The researchers found that fungal transcripts were as abundant as bacterial ones, contrary to previous rRNA amplicon-based studies. The study also revealed that dietary intervention and different growth rates of fish influenced the metatranscriptome, with bacteria primarily shaping vitamin and amino acid metabolism and rhythmic and symbiotic processes, while fungi played a more specific role in configuring host immune, digestive, and endocrine processes.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Fisheries
M. C. Piazzon, F. Naya-Catala, G. V. Pereira, I. Estensoro, R. Del Pozo, J. A. Calduch-Giner, W. G. Nuez-Ortin, O. Palenzuela, A. Sitja-Bobadilla, J. Dias, L. E. C. Conceicao, J. Perez-Sanchez
Summary: This study evaluated the effects of the NoPAP SANA diet on gilthead sea bream, showing that the diet promotes optimal growth and a healthy condition without affecting susceptibility to intestinal parasites.
Article
Parasitology
Enrique Riera-Ferrer, M. Carla Piazzon, Raquel Del Pozo, Oswaldo Palenzuela, Itziar Estensoro, Ariadna Sitja-Bobadilla
Summary: Sparicotylosis, an enzootic parasitic disease, profoundly alters the haemostasis, the innate immune system and the lipid metabolism and transport in gilthead sea bream.
PARASITES & VECTORS
(2022)
Article
Biology
Fernando Naya-Catala, M. Carla Piazzon, Silvia Torrecillas, Socorro Toxqui-Rodriguez, Josep A. Calduch-Giner, Ramon Fontanillas, Ariadna Sitja-Bobadilla, Daniel Montero, Jaume Perez-Sanchez
Summary: The AquaIMPACT H2020 EU project aims to improve the competitiveness of European Aquaculture by integrating selective breeding and nutrition, while promoting the production of high-quality fish with limited environmental impact. This study evaluated the changes in gut microbiota with diet along the production cycle in genetically improved fish and reference fish. The results showed that the gut microbiota composition had less influence on the growth of genetically improved fish, but their intestinal function and gene expression profiles were enhanced.
Article
Fisheries
Socorro Toxqui-Rodriguez, Fernando Naya-Catala, Ariadna Sitja-Bobadilla, M. Carla Piazzon, Jaume Perez-Sanchez
Summary: This study compared different sequencing platforms for microbial characterization in fish gut mucosal samples. The results showed that MinION is a reliable and accurate tool for assessing intestinal bacteria communities, with good correlation with Illumina results. However, less abundant but biologically important taxa may be masked compared to Illumina sequencing.
Article
Fisheries
Enrique Riera-Ferrer, Raquel Del Pozo, M. Carla Piazzon, Ariadna Sitja-Bobadilla, Itziar Estensoro, Oswaldo Palenzuela
Summary: This study explores the best experimental conditions to set up an in vivo infection model capable of mimicking the sparicotylosis signs observed in farmed diseased fish. The experimental setup for parasite transmission consisted of a recipient fish tank with naive GSB receiving water from two S. chrysophrii-infected donor tanks. The study provides an advancement for studying S. chrysophrii's biology and its interaction with its host, as well as for further researching treatment alternatives and prophylactic measures.
Meeting Abstract
Fisheries
Itziar Estensoro, Raquel Del Pozo, Ariadna Sitja-Bobadilla, M. Carla Piazzon
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2023)
Meeting Abstract
Fisheries
E. Riera-Ferrer, E. Gimeno, R. Del Pozo, O. Palenzuela, M. C. Piazzon, A. Sitja-Bobadilla, I. Estensoro
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2023)