Ouellet-Proulx, et al 2020

Question 1

What is the name of this study?

Answer 1

A potential growth thermal index for estimating juvenile Atlantic salmon (Salmo salar) size at age across geographical scales

Question 2

What journal published this paper?

Answer 2

Journal of Fish Biology

Question 3

What is the citation for this paper?

Answer 3

Ouellet-Proulx, et al 2020

Question 4

What does PGTI stand for?

Answer 4

Potential growth thermal index

Question 5

What is the PGTI based on?

Answer 5

-Two components
-Water temperature-dependent growth curve
-Water temperature time series continuously describing the thermal environment preceding fish sampling

Question 6

Why is it important to investigate the effect of temperature on growth?

Answer 6

To properly manage cold water species that are suffering from thermal habitat degradation

Question 7

What is a generally acknowledged fact about the effect of temperature on salmon?

Answer 7

-To have a positive effect on juvenile Atlantic salmon growth
-Earlier emergence dates
-Earlier initial feeding time
-Higher food consumption

Question 8

What is the definition of growth?

Answer 8

Is a continuous, temperature-related process enabled by food consumption

Question 9

What are the negative effects of critically high temperatures?

Answer 9

-Aggregation in cold refuges
-Reduced feeding efforts
-Reduced growth rates

Question 10

When does most of the growth of smolts occur?

Answer 10

During the spring period.

Question 11

Why does most of the growth occur during spring?

Answer 11

-High food availability
-Lower temperatures
-Trade off between metabolic costs (higher at higher temps)

Question 12

Where might the PGTI not be as accurate?

Answer 12

-These growth curves may only work in circumstances where food availability is unlimited

Question 13

What other factors are important in regards to growth of Atlantic salmon?

Answer 13

-Fish densities
-Water discharge levels

Question 14

What was the results of this study?

Answer 14

Higher growth rates corresponded to a warming period in rivers
-Seasonal patterns of feeding behaviour in this period explains higher growth rates in summer from the amount of feeding during this period

Question 15

How did American salmon differ to European salmon?

Answer 15

Contrasting results
-Highest rate of growth for European salmon was observed during July and September instead of spring