Final answer:
The catch per unit effort (CPUE) is 0.16 sharks per hook per hour, which is calculated by dividing the number of sharks caught during a time period (16 sharks) by the effort (100 hooks in one hour). Additionally, the average catch in 15 minutes would be 2 fish if the average hourly catch is eight fish.
Step-by-step explanation:
The catch per unit effort (CPUE) is a standard measure used in fisheries science to estimate the amount of catch that can be obtained with a certain amount of effort; in this case, the effort is using 100 hooks for one hour. To calculate CPUE, you would divide the total number of fish caught by the effort applied. Based on the given information, 16 bull sharks were caught using 100 hooks over the period of an hour.
Therefore, the CPUE is calculated as follows: CPUE = (total catch) / (number of hooks × time in hours)
CPUE = 16 / (100 × 1) = 0.16 sharks per hook per hour.
This means that on average, each hook catches 0.16 sharks in an hour. If we wanted to know the average number of fish caught in 15 minutes, considering the average number of fish caught in an hour is eight, we would divide that quantity by four, as there are four 15-minute intervals in an hour. Thus, the average catch in 15 minutes would be 2 fish (8 / 4).