We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Transcriptome patterns and blood physiology associated with homing success of sockeye salmon during their final stage of marine migration1.
- Authors
Drenner, S. Matthew; Hinch, Scott G.; Furey, Nathan B.; Clark, Timothy D.; Li, Shaorong; Ming, Tobi; Jeffries, Ken M.; Patterson, David A.; Cooke, Steven J.; Robichaud, David; Welch, David W.; Farrell, Anthony P.; Miller, Kristina M.
- Abstract
To better understand the mechanisms that lead to marine mortality of homing adult sockeye salmon (Oncorhynchus nerka), gill and blood biopsies were used in combination with biotelemetry to demonstrate how survival to freshwater entry is related to gene expression and physiological indices of stress. Microarray analysis of gene expression indicated multiple biological processes, including immune and stress responses, protein biosynthesis, and metabolism. Quantitative reverse-transcriptase polymerase chain reaction (qRT-PCR) analysis indicated fish with upregulation of genes related to stress and infection had higher marine survival compared with fish without this genomic signature. We proposed that higher marine survival of potentially stressed and immune compromised fish can be explained by stressed and infected fish being highly motivated to enter fresh water, leading to enhanced marine survival. However, once in a river, stressed and immune compromised fish could suffer higher mortality because of premature river entry. Overall, this study supports the idea that infection and stress are important biological processes influencing behaviour and fate of sockeye salmon during homing migrations.
- Subjects
FISH physiology; FISH migration; SOCKEYE salmon; FISH homing; POLYMERASE chain reaction; TRANSCRIPTOMES; BLOOD; FISH mortality
- Publication
Canadian Journal of Fisheries & Aquatic Sciences, 2018, Vol 75, Issue 9, p1511
- ISSN
0706-652X
- Publication type
Article
- DOI
10.1139/cjfas-2017-0391