Key Vocab
The river sockeye salmon in this study migrate through to reach spawning grounds
What is the Fraser River?
The number of populations surveyed
What is 8 populations?
This salmon population has the smallest migration distance
What is the Weaver population?
This global issue is the primary driver of increasing river temperatures affecting salmon migration
What is climate change?
The hydraulically challenging section some populations must migrate through
What is Hells Gate?
Name 3 of the 8 environmental characteristics used to measure migration difficulty
What is distance, elevation gain, temperature, migration rate, duration, work, river slope, or migration effort?
This salmon population has the broadest temperature tolerance
What is the Chilko population?
Fill in the blank: Our results the hypothesis that continued increases in summer river temperatures
will result in population-specific responses of sockeye salmon
What is support?
The difference between resting
and maximal oxygen consumption rate
What is aerobic scope?
Describe the hypothesis of the study
What is "the physiological adaptation in sockeye salmon occurs locally at the population level, reflecting upriver migration conditions"?
This population was proposed as a potential "superfish" due to its high thermal tolerance
What is the Chilko population?
Fish unable to adapt to rising temperatures or fail to maintain aerobic scope face this ultimate consequence
What is mortality/death
This variable describes the temperature at which aerobic scope is zero
What is "Tcrit"?
The number of individual fish studied for cardiorespiratory performance as a function of temperature
What is 97 fish?
This figure displays diminishing aerobic scope for each population as temperature increases
What is figure 4?
This type of adaptation could help populations cope with warming but may not occur quickly enough
What is physiological adaptation?
This variable describes the density of adrenaline-binding ventricular b-adrenoceptors that allows for the high thermal tolerance of the Chilko population
What is "Bmax"?
Name one method of statistical analysis used in the study? (Hint: read the Figure captions)
What is linear regression, frequency histogram, 2-way analysis?
This migration characteristic increased proportionally to maximum aerobic scope in most populations
What is distance?
Name one of the topics discussed in lecture that this study showcases
What is thermal regulation, natural selection (directional, bottleneck), population genetics, observational research, etc