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Mimicking Transgenerational Signals Of Future Stress: Thermal Tolerance Of Juvenile Chinook Salmon Is More Sensitive To Elevated Rearing Temperature Than Exogenously Increased Egg Cortisol, Theresa R. Warriner, Christina A.D. Semeniuk, Trevor E. Pitcher, Daniel D. Heath, Oliver P. Love
Mimicking Transgenerational Signals Of Future Stress: Thermal Tolerance Of Juvenile Chinook Salmon Is More Sensitive To Elevated Rearing Temperature Than Exogenously Increased Egg Cortisol, Theresa R. Warriner, Christina A.D. Semeniuk, Trevor E. Pitcher, Daniel D. Heath, Oliver P. Love
Great Lakes Institute for Environmental Research Publications
Elevated temperatures resulting from climate change are expected to disproportionately affect ectotherms given their biological function has a direct link to environmental temperature. Thus, as climate change leads to rapid increases in water temperatures in rivers, aquatic ectotherms, such as fish may be highly impacted. Organisms can respond to these stressors through flexible and rapid phenotypic change induced via developmental and/or transgenerational plasticity. In oviparous species, gravid females may translate environmental stress across generations via increased exposure of eggs to maternally derived glucocorticoids (i.e., maternal stress), which has been shown to result in diverse phenotypic effects in offspring. Recent studies …
Exposure To Exogenous Egg Cortisol Does Not Rescue Juvenile Chinook Salmon Body Size, Condition, Or Survival From The Effects Of Elevated Water Temperatures, Theresa R. Warriner, Christina A.D. Semeniuk, Trevor E. Pitcher, Oliver P. Love
Exposure To Exogenous Egg Cortisol Does Not Rescue Juvenile Chinook Salmon Body Size, Condition, Or Survival From The Effects Of Elevated Water Temperatures, Theresa R. Warriner, Christina A.D. Semeniuk, Trevor E. Pitcher, Oliver P. Love
Great Lakes Institute for Environmental Research Publications
Climate change is leading to altered temperature regimes which are impacting aquatic life, particularly for ectothermic fish. The impacts of environmental stress can be translated across generations through maternally derived glucocorticoids, leading to altered offspring phenotypes. Although these maternal stress effects are often considered negative, recent studies suggest this maternal stress signal may prepare offspring for a similarly stressful environment (environmental match). We applied the environmental match hypothesis to examine whether a prenatal stress signal can dampen the effects of elevated water temperatures on body size, condition, and survival during early development in Chinook salmon Oncorhynchus tshawytscha from Lake Ontario, …