Article
Multidisciplinary Sciences
Rusty C. Holleman, Edward S. Gross, Michael J. Thomas, Andrew L. Rypel, Nann A. Fangue
Summary: This study estimated the swimming behavior of juvenile Chinook salmon using acoustic fish telemetry and a hydrodynamic model. The results showed that the swimming speeds of the salmon were centered around 2 body lengths/second, and included different behaviors such as positive rheotaxis, negative rheotaxis, lateral swimming, and passive transport. Lateral movement increased during the day, and positive rheotaxis increased in response to local hydrodynamic velocities.
Article
Biochemistry & Molecular Biology
Javad Sadeghi, Subba Rao Chaganti, Daniel D. Heath
Summary: Differences in gut microbiome composition have significant effects on host gene expression patterns, particularly in immune, developmental and metabolic processes. Antibiotic and probiotic treatments significantly alter the gut and aquatic microbiota, as well as gene expression profiles in fish. Antibiotic treatment leads to downregulation of immunity and upregulation of apoptosis, while probiotic treatment upregulates genes related to post-translation modification and inflammatory responses. Lactobacillaceae and Bifidobacteriaceae are associated with host gene expression patterns. Understanding these interactions can inform new strategies for preventing/treating microbiome disruption-related diseases.
Article
Fisheries
Paula Casanovas, Seumas P. Walker, Hazel Johnston, Colin Johnston, Jane E. Symonds
Summary: Blood biochemistry and haematological parameters in fish are affected by environmental changes, stress, and health status. The study provides baseline data and reference ranges for 34 indicators in Chinook salmon, showing significant differences in some parameters between freshwater and seawater environments. Some parameters were also found to be correlated with fish size.
Article
Fisheries
Ryan B. Shartau, Heindrich N. Snyman, Lenora Turcotte, Pearse McCarron, Julia C. Bradshaw, Stewart C. Johnson
Summary: This study compared the response of Atlantic and Chinook Salmon to microcystin exposure, and found that acute exposure did not cause NPLD. However, long-term exposure may be associated with higher concentrations of microcystin in food, drinking of contaminated seawater, and interactions with other marine toxins.
JOURNAL OF FISH DISEASES
(2022)
Article
Biology
Essie M. Rodgers, Daniel F. Gomez Isaza
Summary: By testing the impact of different stress conditions on the heat tolerance of juvenile Chinook salmon, the study found that mild stress exposure can enhance their tolerance to high temperatures, while severe stress exposure can reduce heat tolerance. The development of cross-tolerance is influenced by the type and severity of stress.
JOURNAL OF THERMAL BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Ronald Lulijwa, Tim Young, Jane E. Symonds, Seumas P. Walker, Natali J. Delorme, Andrea C. Alfaro
Summary: This study exposed Chinook salmon to high temperatures for three months and identified blood biomarkers associated with thermal stress and growth performance. The findings indicated that fish with poor growth performance exhibited significant changes in blood biomarkers related to malnutrition, disturbances in energy metabolism, endocrine functioning, immunocompetence, and osmoregulation.
Article
Fisheries
Thaveshini Chetty, Barbara F. Nowak, Seumas P. Walker, Jane E. Symonds, Kelli Anderson
Summary: This study investigated the relationship between ulcers and stress, immune, and structural gene expression in farmed Chinook salmon skin in New Zealand. The findings revealed that fish with ulcers showed signs of stress, inflammation, re-epithelization, and delayed healing near the ulcer site, emphasizing the importance of these processes in the pathogenesis of ulcers.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Fisheries
Konstanze Steiner, Kevin Heasman, Olivier Laroche, Xavier Pochon, Mark Preece, John P. Bowman, Seumas P. Walker, Jane E. Symonds
Summary: The intestinal microbiome of Chinook salmon consists mainly of Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria, which are partially shared among feces, surrounding water, and feed. Some bacterial taxa are only present in feces, indicating possible acquisition or growth in the gut rather than the surrounding environment. Inter-individual variation suggests host-specific variability that needs further investigation.
Article
Fisheries
Konstanze Steiner, Olivier Laroche, Seumas P. Walker, Jane E. Symonds
Summary: Climate change and global warming have significant impacts on the aquaculture industry, especially on the health and growth performance of fish due to water temperature. This study assessed the effects of different water temperatures in a freshwater recirculating aquaculture system on the gut microbiome, physiology, health, and growth of Chinook Salmon in New Zealand. The results showed that increased water temperature led to changes in feed intake, growth, gut microbiome composition, histology, fatty acids, and various internal biometrics of the fish. These findings contribute to a better understanding of how water temperature influences the holobiont of Chinook Salmon and its implications for fish growth and health.
Article
Fisheries
Malte Willmes, Emily E. Jacinto, Levi S. Lewis, Rachel A. Fichman, Zachary Bess, Gabriel Singer, Anna Steel, Peter Moyle, Andrew L. Rypel, Nann Fangue, Justin J. G. Glessner, James A. Hobbs, Eric D. Chapman
Summary: The decline in Chinook Salmon populations in California is attributed to habitat degradation, water diversions, and climate change. Restoration efforts in Putah Creek have led to increased spawning of Chinook Salmon, with most adults originating from Central Valley hatcheries. This highlights the potential for restored habitats to be rapidly utilized by salmon populations.
Article
Multidisciplinary Sciences
Dina K. Spangenberg, Abby E. Fuhrman, Donald A. Larsen, Brian R. Beckman
Summary: Regulation of lipid stores is crucial for fish physiology and ecology, as seasonal changes in lipid stores are linked to survival during periods of food deprivation. This study investigated the correlation between a seasonally changing photoperiod and changes in energetic status in juvenile Chinook salmonids. The results suggest that regardless of age or size, there is a correlation between seasonal changes in photoperiod and changes in body composition.
Article
Fisheries
William M. Twardek, Nicolas W. R. Lapointe, Steven J. Cooke
Summary: Barriers in rivers can significantly reduce connectivity between habitats, posing a threat to the reproductive success of fish. This study found that female Chinook Salmon were still able to deposit eggs downstream after failed passage, though egg retention rates were higher and reproductive success remained uncertain.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Fisheries
Silviya Ivanova, Graham Raby, Timothy B. Johnson, Sarah M. Larocque, Aaron T. Fisk
Summary: This study used data storage tags and acoustic telemetry to investigate the seasonal home ranges and depth-temperature distributions of different size classes of Chinook salmon in Lake Ontario. The results showed moderate horizontal segregation between immature and sub-adult individuals, with the greatest segregation occurring in the fall and spring. Additionally, there were differences in depth and temperature occupancy between immature and sub-adult individuals.
FISHERIES RESEARCH
(2022)
Article
Multidisciplinary Sciences
Jayson Martinez, Tao Fu, Xinya Li, Hongfei Hou, Jingxian Wang, M. Brad Eppard, Zhiqun Daniel Deng
Summary: Acoustic telemetry is widely used for studying aquatic animal behavior, with the JSATS system being a versatile tool for studying various species behaviors. The system features a small acoustic transmitter that can be implanted through injection or small incision. Deployment of cabled and autonomous acoustic receivers is essential for data collection, while field testing is conducted to validate the accuracy of fish trajectories. The JSATS dataset can be reused to enhance understanding of fish behavior near dams.
Review
Oceanography
William D. P. Duguid, Thomas W. Iwanicki, Jessica Qualley, Francis Juanes
Summary: Fine-scale spatial and temporal variation in physical and biological oceanography, as well as juvenile Chinook Salmon distribution, size, diet, and growth, were observed in the Southern Gulf Islands of the Salish Sea. The availability of prey, particularly Pacific Herring, influenced the stomach fullness and growth of Chinook Salmon. Different foraging strategies, including specializing on Pacific Herring or targeting small crustacean zooplankton, were observed among individuals.
PROGRESS IN OCEANOGRAPHY
(2021)