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Light And Feeding Cues: Entraining Circadian Rhythms In Chinook Salmon Tissues, Maryam Thraya
Light And Feeding Cues: Entraining Circadian Rhythms In Chinook Salmon Tissues, Maryam Thraya
Electronic Theses and Dissertations
The circadian clock is known to help organisms synchronize their behaviour and physiology with the external environment. Present in almost all cells, the clock is made up of a transcription-translation feedback loop that is responsive to cues such as light and feeding. This clock functions to influence the timing of various processes within the cells by promoting gene expression at optimal timing. Chinook salmon (Oncorhynchus tshawytscha) is an important aquaculture species whose clock has not been characterized yet. The aim of the work presented here is to probe for the expression of circadian clock genes in some tissues of Chinook …
A Transcriptomics Approach To Examining The Effects Of Prenatal And Thermal Stress On Developmental Plasticity In Chinook Salmon (Oncorhynchus Tshawytscha), Colin Joseph Finerty
A Transcriptomics Approach To Examining The Effects Of Prenatal And Thermal Stress On Developmental Plasticity In Chinook Salmon (Oncorhynchus Tshawytscha), Colin Joseph Finerty
Electronic Theses and Dissertations
Into the next century, global climate change models predict chronic and acute thermal fluctuations to increase in intensity and frequency, especially in freshwater environments. Recent studies identified that maternal stress signals may alter offspring phenotype, which may confer some adaptive benefit when offspring experience similar stressful environments (Environmental-Match Hypothesis). Using this framework, I investigated if elevated rearing temperature conditions and maternal stress signals produced predictive adaptive responses through modifications to gene transcriptional profiles. I exposed Lake Ontario Chinook salmon (Oncorhynchus tshawytscha) eggs to a biologically relevant maternal stress signal (1000ng/mL cortisol bath or control) and divided eggs across two rearing …
Transgenerational Effects On The Microbiome Of Chinook Salmon (Oncorhynchus Tshawytscha), Mubarak Ziab
Transgenerational Effects On The Microbiome Of Chinook Salmon (Oncorhynchus Tshawytscha), Mubarak Ziab
Electronic Theses and Dissertations
A critical emerging factor in the fitness of individuals is their microbiome, defined as the community of microorganisms found in and on the body of an individual. Despite the rapidly accumulating evidence of the significant role of the microbiome to host health and disease, there is a lack of studies partitioning microbiome variation into explanatory source components in fish, especially those relating to host genetics. To address this knowledge gap, this thesis made several contributions to estimate the transgenerational effects on the microbiome of an ecologically, economically and culturally important salmonid – Chinook salmon (Oncorhynchus tshawytscha). To achieve this goal, …