Oceanography Name Atlantic Bluefin Tuna: Protecting and Overfished Species



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Oceanography Name________________________
Atlantic Bluefin Tuna: Protecting and Overfished Species
Humans have long found the Atlantic Bluefin Tuna to be a very tasty fish and it is a popular ingredient in sashimi- a dish of thinly sliced raw fish, of Japanese origin. This tuna is low in salt and is a good source of healthful oils, vitamins, and minerals. The Atlantic Bluefin Tuna is also a popular fish with sport fishers. One of the largest fish in the world (average size= 6.5 feet, 550 pounds), this species is torpedo shaped for swift movement through the water (can reach up to speeds of 62 mph).

Atlantic Bluefin Tuna fishing tournaments became common in the middle of the 20th Century because the fish were a challenge to catch. After the 1960s, however, sport and commercial overfishing caused the tuna population to decline, and it still has not recovered. Unfortunately, the large nets used to catch entire schools of tuna can also results in the bycatch (accidental catch of nontargeted animals) of sea turtles and dolphins.



The International Commission for the Conservation of Atlantic Tunas (ICCAT) helps to bring awareness of overfishing and the resultant decline in tuna populations to the public. They help set fishing limits and monitor the tuna populations. Recent studies indicate that this tuna species’ population have decreased by 90% since the 1970s and it is close to commercial extinctions, meaning that fishers may no longer find it in the ocean in quantities worth harvesting.
Scenario: Data shows that Atlantic Bluefin Tuna populations continue to decline, yet this species is still of interest to consumers, sport fishers, and others. Your task is to consider how different groups might view this issue. Each column in the table below represents a different stakeholder group in this scenario. For each stakeholder, write at least two questions, concerns, suggestions, or ideas that person/group might have about this problem.


Marine Scientist

Recreational or Commercial Fisher

Consumer

Conservationist











  1. Is it possible to make all groups happy at the same time? How?




  1. What are the compromises that each group might be willing to make?



  1. What are your suggestions on what should be done to stabilize the Atlantic Bluefin Tuna population?



Marine Scientist

Recreational or Commercial Fisher

Consumer

Conservationist

Are fish stocks sustainable?
Have catch limits and other regulations been successful thus far?
Study how other organisms in the food web are being affected by the decline in the population of this species
How long will it take this species to rebound?



Are there other species that are as fun or profitable to catch?
How will I make a living if this species becomes depleted?
How long will it take this species to rebound?
Are regulations going to be put on tuna fishing?

Do other types of fish taste like tuna?
Why is this species being depleted?
Will I still be able to eat tuna?
Am I going to have to ration my tuna intake?
Will this increase the price of tuna?

Begin a campaign to educate the public about the depletion of tuna stock
Disallow tuna fishing for an extended period of time
What regulations are there already?
How can we make people aware of what’s happening with the ABT?
Can this species recover?



  1. Is it possible to make all groups happy at the same time? How?



Probably not. Groups are going to have to compromise in order for this population to increase.



  1. What are the compromises that each group might be willing to make?


Examples: catch limits, temporary no fishing, temporarily can’t buy tuna, price increases, etc.

  1. What are your suggestions on what should be done to stabilize the Atlantic Bluefin Tuna population?


Lower the catch amount, change fishing methods, boycott eating tuna, etc.

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